Skocz do pozycji: 1.

Tytuł:

Analysis of pubescent oak (Quercus pubescens Willd.) by means of chloroplast DNA (cpDNA) in the western part of the Balkan Peninsula

Autorzy:

Ballian, D.
Ivankovic, M.
Grycan, J.
Peric, S.
Marjanovic, H.
Bobinac, M.
Slade, D.

Powiązania:

https://bibliotekanauki.pl/articles/57477.pdf

Data publikacji:

2010

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

pubescent oak zob.downy oak
downy oak
oak
Quercus pubescens
chloroplast
cpDNA
Balkan Peninsula
genetic variability
population diversity
plant population

Opis:

In the area of the western Balkans, xerothermal broad-leaf forests hold a very special position, the main species being pubescent oak (Quercus pubescens Willd.). The study comprises 36 populations of pubescent oak from Croatia, Bosnia and Herzegovina, Montenegro, Kosovo, Albania and Macedonia. Genetic variability and population diversity was analysed on chloroplast DNA in order to determine to which haplotype an individual or studied population belongs, as well as how they are related. For the detection of one haplotype analysed four sequences (AS, TF, DT and CD) on the chloroplasts DNA. The results of the analysis suggest that there are six different haplotypes of pubescent oak (2, 4, 5, 17, 31, 33) in the studied populations. Two more sub-haplotypes were found in haplotype 5 (a and b), but only in populations occurring in Croatia and Bosnia and Herzegovina. The results suggest the great variability of pubescent oak in the researched area, which is generally characteristic of other species from the area of the Balkan Peninsula. The results obtained by means of cpDNA analysis can help in the formation of seed zones. However, due to the strong selection pressure of unplanned logging, and the possible introduction of herbal material of unknown origin, it is necessary to find a sufficient number of autochthonous entities (i.e., populations of the researched species) as well as new suitable markers for their characterization. The results of this paper constitute a scientifically recognised, partial examination of the origin of the starting forest reproductive material from the broader geographic area, thus serving future projects on its regeneration.

Źródło:

Acta Societatis Botanicorum Poloniae; 2010, 79, 3
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 2.

Tytuł:

Teleconnection of 23 modern chronologies of Quercus robur and Q. petraea from Poland

Autorzy:

Ufnalski, K

Powiązania:

https://bibliotekanauki.pl/articles/41667.pdf

Data publikacji:

2006

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

Polska
Quercus robur
Quercus petraea
dendrochronology
English oak
oak stand
forest area
sessile oak
downy oak
Quercus pubescens
climatic factor

Opis:

Quercus robur and Q. petraea are important forest-forming species in Europe. Q. robur is believed to require more fertile soils, to be more tolerant to low temperatures and more sensitive to oak decline than Q. petraea. Thus chronologies of the two species from nearby localities were hypothesised to differ more strongly between species than between localities. Wood cores were collected on 23 research plots in 2 national parks and 12 forest districts. In each locality two plots (one with Q. robur and one with Q. petraea) were established in forest stands of similar age at similar site conditions wherever possible. Similarity between chronologies was assessed by the test of parallel agreement (Gleichlaufigkeit), Pearson correlation coefficients, and principal components. The plots were grouped by the Ward clustering method and according to 1st and 2nd principal components. The first 2 methods segregated chronologies nearly ideally into pairs of species from the same forest district, indicating that the chronologies differ between forest districts but not between species. Chronologies clustered in 2 large groups: northern and southern (on the basis of correlation) or northeastern and southwestern (on the basis of parallel agreement). Principal components also distinguished northeastern and southwestern chronologies, but less clearly. The results suggest that differences in climatic and soil requirements between the 2 oak species are generally too small in comparison with the differences caused by climatic factors.

Źródło:

Dendrobiology; 2006, 55; 51-56
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 3.

Tytuł:

Morphometric analyses of the leaf variation within Quercus L. Sect. Cerris Loudon in Turkey

Autorzy:

Uslu, E.
Bakis, Y.

Powiązania:

https://bibliotekanauki.pl/articles/41514.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

morphometric analysis
leaf
variation
Quercus cerris
Turkey oak
Austrian oak zob.Turkey oak
oak
cluster analysis
numerical taxonomy
principal component analysis
Turkey [geogr.]

Opis:

Oaks are classified heavily based on the leaf morphology. However, identification of specimens without acorns is usually controversial in Cerris section. Although members of Cerris section have a broad distribution area, there are only few taxonomic studies. Therefore, the current study is the first to show the discrimination of species in Cerris section based on leaf characters from Turkey. Discrimination among the members of Cerris section over Turkey (Q. cerris L. var. cerris, Q. ithaburensis Decne. subsp. macrolepis (Kotschy) Hedge and Yalt, Q. brantii Lindley, Q. libani Olivier, and Q. trojana P. B. subsp. trojana.) was aimed and variations within and among the species based on 15 qualitative leaf characters was presented. In this work we have studied the natural variability of these species by analysing leaf materials collected from 44 populations around Turkey. Cluster Analysis (CA) and Principal Component Analysis (PCA) were performed to assess intra-specific differentiation and to compare the distribution of variance in the individual and population level. The results showed that the leaf characters presented a good discrimination of five Cerris taxa in PCA at the population level, but the relationships between Q. ithaburensis subsp. macrolepis and Q. brantii showed complex groups in CA. Among the studied taxa, the highest variation was found within Q. cerris populations. In this work, we obtained discrimination of Cerris section species from Turkey based on leaf characters which is quite useful for those herbarium specimens without acorns and in other systematic observations.

Źródło:

Dendrobiology; 2014, 71
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 4.

Tytuł:

Spatial and temporal differentiation of bees (Apoidea) in the forests of Wielkopolski National Park, western Poland
Przestrzenne i czasowe zróżnicowanie Apoidea w lasach Wielkopolskiego Parku Narodowego

Autorzy:

Banaszak, Józef
Cierzniak, Tomasz

Powiązania:

https://bibliotekanauki.pl/articles/1038152.pdf

Data publikacji:

1994

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

Apoidea
Wielkopolski National Park
Oak-hombeam forest
Oak forest
Pine forest

Opis:

Results of the investigations of spatial and temporal differentiations of Apoidea in the forests of Wielkopolski National Park were presented. It was shown that the both forest floor differ with the degree of species differentiation and domination’s structure and total number of bees. In the herbaceous layer of the forests about twice as many spedes were found than in the crowns. Also the Shannon-Weaver’s indices for bees communities of the herbs layer are higher in all three investigated forest ecosystems. The curves of Apoidea numbers in tree crowns and forest floor were similar. The curves of Apoidea numbers in the deciduous forests have one peak in the first days of May. Whereas the curves of Apoidea numbers in the pine forest have multi peak course. It was proved that trees play an important role in feeding chain of bees inhabiting deciduous forests.

Źródło:

Acta Universitatis Lodziensis. Folia Zoologica; 1994, 2
1230-0527

Pojawia się w:

Acta Universitatis Lodziensis. Folia Zoologica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 5.

Tytuł:

Tannin content in acorns (Quercus spp.) from Poland

Autorzy:

Luczaj, L.
Adamczak, A.
Duda, M.

Powiązania:

https://bibliotekanauki.pl/articles/41617.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

polyphenol
tannin content
acorn
oak acorn
oak
Quercus
phytochemistry
food security
Polska

Opis:

Oak acorns used to be an important human food, up until recent times. The major factor inhibiting their use in modern nutrition is their high tannin content. Polish oak trees were screened in order to find out whether there are any major geographical or interspecific differences in tannin and total phenolic contents in acorns, which might help us to establish further directions in the search for low-tannin individuals. We studied the level of phenolic compounds using the standard Polish and European Pharmacopoeia method, with Folin-Ciocalteu reagent and hide powder. Altogether 49 acorn samples of Quercus robur, 13 of Q. petraea, 1 of Q. pubescens (all native) and 12 of Q. rubra (introduced) were collected in different regions of Poland. The amount of investigated phenolics in Q. robur and Q. petraea acorns was similar, and tannins constituted the main component. The Q. pubescens sample was distinguished by the lowest tannin and total phenolic content and a relatively high amount of non-tannin phenolics. Q. rubra had a slightly lower tannin content than Q. robur and Q. petraea acorns, but the level of other phenolics was much higher. The results for Q. robur suggest geographical variability of phenolic content as well as a relationship between the phytochemical and biometric parameters of oak acorns.

Źródło:

Dendrobiology; 2014, 72
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 6.

Tytuł:

Temperature effects performance of Lymantria dispar larvae feeding on leaves of Quercus robur

Autorzy:

Karolewski, P
Grzebyta, J.
Oleksyn, J.
Giertych, M.J.

Powiązania:

https://bibliotekanauki.pl/articles/41435.pdf

Data publikacji:

2007

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

herbivore insect
sex ratio
Lymantria dispar
larva
gypsy moth
feeding
leaf
oak
English oak
Quercus robur
pedunculate oak
temperature
performance

Opis:

Future climatic warming may modifyinsect development, sex ratio, quantitative changes in populations that could affect the frequency of outbreaks. Here we analyzed the influence of temperature on larval growth and development in the gypsy moth (Lymantria dispar L.). The larvae were reared at three constant temperatures: 15, 20 or 25°C, and fed with leaves of the English oak (Quercus robur L.). Larval mortality, duration of development (DD), relative growth rate (RGR), total mass of food eaten (TFE), and pupal mass (PM) were estimated. Larval mortality was lowest at 20°C, higher at 25°C, and highest at 15°C. DD significantly decreased with increasing temperature and depended on sex. The influence of temperature on the shortening of DD was stronger in males than in females. RGR significantly depended on temperature and was the highest at 25°C, and lowest at 15°C. At 15°C, RGR did not change markedly with time. In contrast, RGR at 20°C was characterized bya continuous decreasing trend. At 25°C, RGR was very high for 2 weeks but quickly declined afterwards. Temperature did not affect the TFE. PM was significantly correlated with temperature and sex. PM of females was higher at 20°C than at 15 and 25°C, in contrast to that of males, which was similar at 20 and 25°C, and higher than at 15°C. For larval growth and development, the most favourable was the medium temperature (20°C). The least favourable temperature for females was 25°C, for males 15°C. The results suggest that global warming may modifythe future sex ratio of gypsy moths that may affect insect development and outbreaks.

Źródło:

Dendrobiology; 2007, 58; 43-49
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 7.

Tytuł:

Application of the oak wood chips in brewing®
Zastosowanie płatków dębowych w browarnictwie®

Autorzy:

Bajerski, Mateusz
Klimczak, Krystian
Cioch-Skoneczny, Monika

Powiązania:

https://bibliotekanauki.pl/articles/2051417.pdf

Data publikacji:

2021

Wydawca:

Wyższa Szkoła Menedżerska w Warszawie

Tematy:

oak chips
oak
barrel
beer
aging
płatki dębowe
dąb
beczki
piwo
leżakowanie

Opis:

Oak chips are finely shredded oak fragments, which were toasted under strictly controlled conditions. They are produced in various grammages and degrees of toasting. Chips can be divided into natural, light, medium and heavily toasted. Their size affects how quickly ingredients are being released from them. The aim of the article is to present issues related to the application of oak chips in brewing, as an alternative to the oak barrels usage. The description presents information regarding the influence of the oak chips addition on the final profile of the drink and also characterizes the processes that take place during aging.
Płatki dębowe to drobno poszatkowane szczapy dębowe, które zostały upieczone w ściśle kontrolowanych warunkach. Produkowane są w różnej gramaturze i stopniu opieczenia. Wyróżnia się płatki naturalne, lekko, średnio i mocno opiekane. Rozmiar zrębków wpływa na szybkość wydobywania się z nich składników. Celem artykułu jest przybliżenie zagadnień związanych z zastosowaniem płatków dębowych w piwowarstwie, jako alternatywy dla wykorzystania beczek dębowych. W opisie przedstawiono informacje dotyczące wpływu dodatku zrębków dębowych na końcowy profil napoju, scharakteryzowano również procesy zachodzące podczas leżakowania piwa.

Źródło:

Postępy Techniki Przetwórstwa Spożywczego; 2021, 1; 124-129
0867-793X
2719-3691

Pojawia się w:

Postępy Techniki Przetwórstwa Spożywczego

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 8.

Tytuł:

Influence of cutting off distal ends of Quercus robur acorns on seedling growth and their infection by the fungus Erysiphe alphitoides in different light conditions

Autorzy:

Giertych, M.J.
Suszka, J.

Powiązania:

https://bibliotekanauki.pl/articles/41420.pdf

Data publikacji:

2010

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

oak
pedunculate oak
container nursery
oak powdery mildew
Quercus robur
seedling growth
plant infection
fungi
Erysiphe alphitoides
light condition
phenology

Opis:

Quercus robur seedlings are very often infested by oak powdery mildew caused by Erysiphe alphitoides. This disease attacks primary leaves with high insolation. In our experiment seedling growth in different light conditions was observed. Seedlings were derived from intact seeds or from seeds where the distal ends of acorns were cut off. Acorns were sown in pots at four light conditions (2%, 8% and 30% light transmittance and in full sunlight). For half of the seedlings we reduced the influence of powdery mildew by using a fungicide. Height of seedlings, shoot dry mass and the degree of damage caused by Erysiphe alphitoides were measured. The highest damages were in full light conditions and the lowest in the 30% light treatment. The influence of acorn reduction on powdery mildew infection was not significant (p=0.0763), however, in the full light conditions the seedlings from cut acorns were ca. 30% less damaged. The cutting of acorns also alters the height of seedlings and shoot mass. The tallest seedlings were from cut seeds growing in the 30% light treatment. The influence of the fungicide was lowest in the 30% light treatment where the decrease in damage was only ca. 10%. For nursery practice we can say that oak seedling production from cut off acorns under 30% light transmittance should give the best results of seedling growth even without the fungicide application.

Źródło:

Dendrobiology; 2010, 64
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 9.

Tytuł:

Responses in young Quercus petraea: coppices and standards under favourable and drought conditions

Autorzy:

Stojanovic, M.
Cater, M.
Pokorny, R.

Powiązania:

https://bibliotekanauki.pl/articles/41121.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

plant response
young plant
Quercus petraea
sessile oak
durmast oak zob.sessile oak
coppice
standard
favourable condition
drought condition
drought response
light condition

Opis:

Assimilation and photosynthetic efficiency (maximal quantum yield) of young oaks were compared in coppice and standard sessile oak stands of comparable age (100 years) under different light intensity categories: under minimum light – ISF < 20%, low light – 20%30% during favourable and drought conditions. Measurements of maximal assimilation rates were performed at a constant temperature of the measurement block (20°C), a CO2 concentration of 400 μmol/l, flow 500 μmol/s and different light intensities: 0, 50, 250, 600, 1200 and 1800 μmol/m2s during three consecutive growing seasons (2012, 2013 and 2014). In every category at least 8 young naturally regenerated seedlings and sprouts of different coppice stools were measured. The quantum yield in optimal conditions in standards was highest in the category of closed canopy, while in coppices in medium light category. During severe drought in 2013 the drop in efficiency of standards was evident in all categories, while in coppices no differences in efficiency were observed between favourable 2012 and 2013 with expressed drought stress, proving the advantage of young coppices over standards in this particular light category. However, the beneficial effects of restoration coppicing are not guaranteed. It is our belief that in time such advantage might decrease; it would be therefore interesting to compare responses in time and define, when response abilities of both studied systems become equal.

Źródło:

Dendrobiology; 2016, 76
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 10.

Tytuł:

Winter storage of pedunculate oak (Quercus robur L.) seedlings
Zimowe przechowywanie sadzonek dębu szypułkowego (Quercus robur L.)

Autorzy:

Wesoly, W.
Chabowska, A.

Powiązania:

https://bibliotekanauki.pl/articles/791403.pdf

Data publikacji:

2016

Wydawca:

Wyższa Szkoła Zarządzania Środowiskiem w Tucholi

Tematy:

winter storage
storage
pedunculate oak
Quercus robur
seedling
oak
plant seedling
plant vigor
plant growth

Źródło:

Zarządzanie Ochroną Przyrody w Lasach; 2016, 10
2081-1438
2391-4106

Pojawia się w:

Zarządzanie Ochroną Przyrody w Lasach

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 11.

Tytuł:

Possibility of Detecting Species from the Phytophthora Genus in the Rhisosphere Soil of oak Trees Using Visual Crown Assessment

Autorzy:

Tkaczyk, M.
Milenković, I.
Kubiak, K. A.

Powiązania:

https://bibliotekanauki.pl/articles/213621.pdf

Data publikacji:

2014

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Lotnictwa

Tematy:

Phytophthora
oak decline
soil
rhizosphere soil

Opis:

This paper explains biological background of the project. Oak decline in Polish stands in recent years has become a serious problem. Symptoms of disease like thinning crowns, yellowing of the leaves or the appearance of dark exudates on the trunks are observed. Such symptoms are characteristic for pathogenic organisms of the genus Phytophthora. Identification and confirmation of the presence of these pathogens is difficult. That is why we have tried to estimate the presence of pathogens in the rhizosphere soil in oak stands on the basis of visual assessment of crowns trees with symptoms typical of Phytophthora infection.

Źródło:

Prace Instytutu Lotnictwa; 2014, 4 (237) December 2014; 92-101
0509-6669
2300-5408

Pojawia się w:

Prace Instytutu Lotnictwa

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 12.

Tytuł:

Radial growth of pedunculate oak and European ash on active river terraces. Hydrologic and climatic controls

Autorzy:

Okoński, B.

Powiązania:

https://bibliotekanauki.pl/articles/100989.pdf

Data publikacji:

2017

Wydawca:

Polska Akademia Nauk. Stowarzyszenie Infrastruktura i Ekologia Terenów Wiejskich PAN

Tematy:

oak
ash
floodplain forest
radial growth

Opis:

The aim of this study was (1) to assess relationships binding hydroclimatic factors and radial growth of pedunculate oak and European ash growing on active terraces of river valleys; (2) to compare the growth reaction of these species from this location. Research site was located in a floodplain valley, within mid-course of the lowland section of the Warta River in the Lasy Czeszewskie Forest, Poland. The Warta River (length 808 km, basin area: 54,529 km2 ) is a mid-size European river, a tributary of the Odra River draining the North European Plain to the Baltic Sea. The sampled forest stand was an old growth composed of pedunculate oak and European ash mixed with other mature tree species. The main conclusions are: (1) ash in comparison to oak growing on the same site located on floodplains appeared to be both more sensitive to hydroclimatical features and less ecologically flexible as far as monthly pattern of water requirements is concerned, therefore adaptation to changing climatic conditions and drought may be a greater ecological challenge for ash than for oak in river valleys; (2) streamflow could be considered as the parameter that substituted precipitation well, or even was more important than precipitation, as far as availability of water for development of tree rings of ash and oak growing on active terraces of river valleys is concerned; however, the role of streamflow in radial growth developing decreased substantially during 20th century; (3) Standardized Precipitation Evapotranspiration Index (SPEI) as a measure of drought is a prospective parameter in dendroecological analysis, since it conveys real availability of water for trees.

Źródło:

Infrastruktura i Ekologia Terenów Wiejskich; 2017, III/1; 1075-1091
1732-5587

Pojawia się w:

Infrastruktura i Ekologia Terenów Wiejskich

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 13.

Tytuł:

Research on wood submerged in the sea
Badania drewna zatopionego w morzu

Autorzy:

Pomian, I.
Fojutowski, A.
Wroblewska, H.
Komorowicz, M.
Kropacz, A.
Noskowiak, A.

Powiązania:

https://bibliotekanauki.pl/articles/52667.pdf

Data publikacji:

2010

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna

Tematy:

MACHU project
bioindicator
cultural heritage
marine research
oak
sea
submerged wood
wood
submerged oak wood
testing

Opis:

The Polish Maritime Museum in Gdansk participated in the EU project MACHU aiming at creation of a system of location, making information on European subaqueous maritime cultural heritage available and dissemination of it. 7 EU countries co-operated in the project. The Wood Technology Institute contributed to research on durability of small oak wood samples submerged in the sea. The samples were considered bioindicator of changes. The outline of research in the project is presented below.
Centralne Muzeum Morskie w Gdańsku uczestniczyło w projekcie UE MACHU zmierzającym do stworzenia systemu lokalizacji, udostępnienia i upowszechnienia informacji o europejskim podwodnym morskim dziedzictwie kulturowym. W projekcie współpracowało 7 krajów UE. Instytut Technologii Drewna wziął udział w pracach w zakresie badań trwałości w warunkach zatopienia w morzu małych próbek drewna dębu traktowanych jako bioindykator zmian. Przedstawiono zarys badań w projekcie.

Źródło:

Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2010, 53, 183
1644-3985

Pojawia się w:

Drewno. Prace Naukowe. Doniesienia. Komunikaty

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 14.

Tytuł:

Bonitacja wzrostowa dębu szypułkowego (Quercus robur L.) pod okapem drzewostanów sosnowych
Site index of common oak (Quercus robur L.) under the canopy of Scots pine stands

Autorzy:

Paluch, R.

Powiązania:

https://bibliotekanauki.pl/articles/978979.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

Quercus robur
odnowienia podokapowe
bonitacja wzrostowa
modele wzrostu
leśnictwo
drzewa leśne
dąb szypułkowy
wzrost roślin
growth model of common oak
class of bonitation
oak age
common oak

Opis:

The aim of the study was to compare the site index of common oak growing under the canopy of Scots pine stands with the values typical for this species on a given habitat. The research was carried out in 20 Scots pine stands with well−developed lower layers of common oak occurring in the fresh mixed forest habitat. The analyzed stands were located in 5 forest districts in central and north−eastern Poland. To determine the real age of oaks and their height, 5 under canopy common oaks from the group of the highest ones were selected and felled. The total sample size was therefore 100 trees. Cut trees were divided into sections of 1 m in length, what gave the greatest accuracy to determine the dendrometric parameters. From the middle of each section a sample for testing was taken. It was found that the oak undergrowth growing about 30−40 years under the pine canopy on a fresh mixed forest habitat, usually achieved II−III site index class, while on a mixed fresh coniferous forest habitat it was III−IV class. These site index classes are typical for the stands growing in full access of light, so no adverse changes in site index class were observed as a result of the pine canopy occurrence for 30−40 years (tab.). Oaks growing for more than 40 years under the canopy of pine obtained worse site index class than the average for a given habitat, so the complete exposure of undergrowth for the light should not be extend for too long in time. Common oaks responded with increased height to full exposure. This reaction was definitely more pronounced for the younger oaks at age of 30 than for the older ones at age of 70. The height growth curves of under−canopy common oaks differed from the model curves according to Bruchwald et al. [1996] and stand volume and increment tables [Szymkiewicz 1962], especially in the initial (juvenile) phase, which indicate the occurrence of differences in growth under the pine canopy and without cover (figs. 2 and 3).

Źródło:

Sylwan; 2020, 164, 03; 179-186
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 15.

Tytuł:

Influence of land relief and soil properties on stand structure of overgrown oak forests of coppice origin with Sorbus torminalis

Autorzy:

Szymura, T.H.
Szymura, M.
Pietrzak, M.

Powiązania:

https://bibliotekanauki.pl/articles/41135.pdf

Data publikacji:

2014

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

land relief
soil property
stand structure
overgrown coppice oak
oak forest
coppice
Sorbus torminalis
regeneration
forest management

Opis:

Traditional forest management as coppicing and coppicing-with-standard are recently considered as beneficial for biodiversity in woodlands. Cessation of coppicing leads to changes in stand structure and often loss of biodiversity. In contemporary Polish forestry coppicing is not applied, however some stands of coppice origin persist in Silesia until present. The overgrown coppice oak forests that cover the southern slopes at the foothills of the Sudetes Mountains (Silesia, Central Europe) are considered to be Euro-Siberian steppic woods with a Quercus sp. habitat (91I0): a priority habitat in the European Union, according to the Natura 2000 system. They support one of the largest populations of wild service tree (Sorbus torminalis Crantz) in Poland. In this study we investigated the relation of stand structure and trees parameters with environmental variables. The results showed considerable variability of stand volume, tree density and stems’ size correlated mostly with soil texture, but not nutrient content. We attributed it to soil dryness which seems to be the crucial factor controlling growth of trees. The natural regeneration of trees concentrated mostly on non-exposed sites on less acidic soils, but seedlings of wild service tree were present almost exclusively on most insolated sites, with shallow acidic soils. However, the regeneration of trees in sapling stage was restrained by browsing. Results suggest that maintaining of Sorbus torminalis requires protection against browsing, and some kind of active management is necessary to retain the observed stand structure with high proportion of wild service trees in stands on more fertile soils.

Źródło:

Dendrobiology; 2014, 71
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 16.

Tytuł:

The use of oak chips and coconut fiber as biofilter media to remove vocs in rendering process

Autorzy:

Tymczyna, Leszek
Chmielowiec-Korzeniowska, Anna
Paluszak, Zbigniew
Dobrowolska, Magadalena
Banach, Marcin
Pulit, Jolanta

Powiązania:

https://bibliotekanauki.pl/articles/1039479.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Biochemiczne

Tematy:

rendering plants
biofiltration
oak bark
coconut fiber

Opis:

The study evaluated the effectiveness of air biofiltration in rendering plants. The biofilter material comprised compost soil (40%) and peat (40%) mixed up with coconut fiber (medium A) and oak bark (medium B). During biofiltration average VOCs reduction reached 88.4% for medium A and 89.7% for medium B. A positive relationship of aldehyde reduction from material humidity (r = 0.502; α<0.05) was also noted. Other biomaterial parameters did not affect the treatment efficiency.

Źródło:

Acta Biochimica Polonica; 2013, 60, 4; 747-751
0001-527X

Pojawia się w:

Acta Biochimica Polonica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 17.

Tytuł:

Zmienność wybranych cech makrostruktury i gęstości drewna dębu czerwonego (Quercus rubra L.) z Polski południowo-wschodniej
Variability of selected macrostructural features and the wood density of northern red oak (Quercus rubra L.) from south-eastern Poland

Autorzy:

Wąsik, R.
Michalec, K.

Powiązania:

https://bibliotekanauki.pl/articles/979284.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

red oak
sapwood
annual rings
latewood
density

Opis:

The aim of the paper was to determine the variability of selected macrostructural features and wood density for northern red oak growing in south−eastern Poland. On 4 study plots, we sampled each tree, taking an increment core from the northern side of the trunk, from the height of 1.3 m. The number of tree rings, width and the share of sapwood was measured. The cores were scanned and then tree ring and latewood widths were measured. The latewood proportion in each ring was calculated. Next, starting from the bark, the cores were divided into sections containing 10 annual rings. The relative wood density was determined for each section, then the density was calculated for entire stem cross−section. The mean sapwood width was 1.5 cm. It included 7 annual rings on average, and its share in the trunk cross−sectional area reached 17%. Younger red oaks (II and III age classes) had a significantly higher share of sapwood compared to older trees (IV and V age classes). The investigated red oaks formed narrow−ring wood with an average width of 2.16 mm. The trees growing on deciduous forest habitat had a more equal tree ring width compared to trees from coniferous forest habitats, where this feature showed also higher variability. The latewood proportion in the studied red oaks was 60% on average. The mean relative wood density was 0.578 g/cm3 and it was slightly higher than the value given for red oaks growing in North America. The calculated absolute density (with an assumed volumetric shrinkage from 12.9 to 13.7%) varied from 0.664 to 0.670 g/cm3. It classifies the investigated wood as moderately heavy. Similar density values are given for native oaks, which allows to assume that the technical quality of the wood of red oaks growing in Poland is similar to native oak species. The wood of trees from deciduous forest habitat showed a significantly higher density and a more equal distribution compared to the trees from coniferous forest sites. The raw material of red oaks obtained from deciduous forest habitats should characterize by a better technical quality of wood in comparison with that obtained from coniferous forest sites.

Źródło:

Sylwan; 2020, 164, 10; 850-859
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 18.

Tytuł:

Abundance and diversity of fungi in oak wood

Autorzy:

Behnke-Borowczyk, J.
Kwasna, H.
Kokot, K.
Haluszczak, M.
Lakomy, P.

Powiązania:

https://bibliotekanauki.pl/articles/2077912.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

abundance
deadwood
diversity
fungi
ITS
Illumina
oak

Opis:

Deadwood is an important functional and structural component of forest ecosystems since it regulates nutrient cycling, serves as a carbon (C) pool, increases the C content in the soil, and is a source of resources, including water, for a wide range of saproxylic and non-saproxylic organisms. The abundance and diversity of wood-inhabiting fungi in six fallen, horizontally lying logs of Quercus petraea, in the 1st, 2nd and 3rd decay classes, in the Drawa National Park in Poland in 2015, were studied using the Illumina se- quencing technique. The total number of OTUs obtained (264 307) included sequences of culturable fungi (242 369 = 91.70%) and non-culturable fungi (7 056 = 2.66%). The dead oak wood was colonized by 277 taxa. Culturable fungi of Zygomycota, Ascomycota and Basidiomycota comprised 75% of taxa detected and were represented by 14, 139 and 53 taxa respectively. Non-culturable organisms were represented by 70 taxa. Fungi were classified into 18 groups: (i) typical soft rot fungi, (ii) phytopathogens potentially hazard- ous to trees, (iii) epiphytes and endophytes or weak, opportunistic pathogens, (iv) ectomycorrhizal species, (v) ericoid mycorrhizal species, (vi) crust fungi, (vii) resupinate basidiomycetes, (viii) saprotrophs and soil fungi, (ix) opportunistic human pathogens causing superficial or systemic mycoses, (x) pathogens of warm- or cold-blooded animals, (xi) ascomycetous yeasts, (xii) basidiomycetous yeasts, (xiii) antagonists of fungi, (xiv) producers of metabolites effective against pathogens, (xv) hyperparasites, (xvi) lichen-form- ing species, (xvii) partners of other fungi, (xviii) species rare or uncommon in nature. It was shown that: (i) coarse, woody debris of oak is host to abundant and diverse mycobiota, (ii) abundance and diversity of fungi increase with the decay continuum, (iii) oak logs can be a habitat of phytopathogens potentially haz- ardous to forest health, (iv) different phytopathogens favour wood in different decay classes, (v) abundance of pathogens decreases, and of ericoid mycorrhizal (or soil) species increases with the decay continuum. Maintaining different types of deadwood increases fungal diversity, but also the risk of diseases.

Źródło:

Dendrobiology; 2018, 80; 143-160
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 19.

Tytuł:

Fluctuations in mean stem volume of common oak (Quercus robur L.) depending on age of trees
Zmiany średniej miąższości pnia dębu (Quercus robur L.) w zależności od wieku drzewa

Autorzy:

Kazmierczak, K.
Pazdrowski, W.
Szymanski, M.
Nawrot, M.

Powiązania:

https://bibliotekanauki.pl/articles/9573.pdf

Data publikacji:

2009

Wydawca:

Uniwersytet Przyrodniczy w Lublinie. Katedra Zastosowań Matematyki i Informatyki

Tematy:

fluctuation
stem volume
oak
common oak
Quercus robur
plant age
tree
growth curve
linear regression
multiple regression

Źródło:

Colloquium Biometricum; 2009, 39
1896-7701

Pojawia się w:

Colloquium Biometricum

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 20.

Tytuł:

Holocene dendrochronological standards for subfossil oaks from the area of Southern Poland

Autorzy:

Krąpiec, Marek

Powiązania:

https://bibliotekanauki.pl/articles/2026793.pdf

Data publikacji:

2001

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

dendrochronology
subfossil oak trunks
Holocene
southern Poland

Opis:

Subfossil trunks of oak (Quercus robur L. and Q. petraea Lieb.) are fundamental for construction of long dendrochronological standards for southern Poland. In the last three years over 400 new oak trunks from alluvial deposits from the basins of the rivers Vistula and Odra were analysed. Most trunks came from the last 2500 years and the produced local chronologies permitted for improvement of the standard chronology POLAND2, covering the period 474 BC-I 555 AD. Subfossil oak trunks from several sites in the river Vistula basin (Grabie, Wolica, Podolsze and others) and from alluvia of the river Odra in Wrocław enabled construction of a new long chronology C_3000E, spanning the years 1795-612 BC. This chronology was absolutely dated through teleconnection with standards for southern Germany. A row of floating chronologies, dated with the radiocarbon method, was established for the older periods of Holocene. They cover the following intervals: ca. 670-400 BC, ca. 2200-1900 BC, ca. 3400-3100 BC, ca. 3800-3600 BC and ca. 6650-6150 BC. Subfossil oak chronologies constructed by the author, together with standards based on living trees, monuments of wooden architecture, and archaeological timbers from Wielkopolska (449- I 994 AD), Lower Silesia (780-1994 AD) and Małopolska (910-1997 AD) practically allow for absolute dating of oak timbers from the area of southern Poland coming from the last 4000 years.

Źródło:

Studia Quaternaria; 2001, 18; 47-63
1641-5558
2300-0384

Pojawia się w:

Studia Quaternaria

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 21.

Tytuł:

Zagrożenie drzewostanów dębowych przez Cryphonectria parasitica
Threat to the oak stands caused by Cryphonectria parasitica

Autorzy:

Bieniek, P.
Oszako, T.
Pusz, W.

Powiązania:

https://bibliotekanauki.pl/articles/979289.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

cryphonectria parasitica
oak stands
identification
detection
pathogen control

Opis:

Cryphonectria parasitica is a pathogen that causes chestnut blight – a disease that has decimated chestnut trees Castanea dentata in North America and C. sativa in Europe. C. parasitica also infects other tree species, including oaks. Although the disease on oaks progresses and develops in a milder way, it can pose a threat to them. The main purpose of the work is to investigate the risk of C. parasitica occurring in oak stands. The work is based on a review of the available literature taking into account an analysis of pathogen detection and identification methods, current distribution of disease in Europe, distribution of potential host plants, favourable climatic conditions, and ways of spreading (pathways).

Źródło:

Sylwan; 2020, 164, 07; 576-582
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 22.

Tytuł:

Modelling the potential distribution of the endemic oak Quercus vulcanica Boiss. & Heldr. ex Kotschy in Turkey from the last interglacial to the future: From near threatened to endangered

Autorzy:

Sarikaya, A.G.
Orucu, O.K.
Sen, I.
Sarikaya, O.

Powiązania:

https://bibliotekanauki.pl/articles/2130201.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

oak
biogeography
species distribution modelling
MaxEnt
biodiversity conservation

Opis:

The aims of this study are to model past (LIG, LGM and Mid-Holocene), present and future (2050 and 2070) distributions of the Quercus vulcanica Boiss. & Heldr. ex Kotschy by using Maximum Entropy, and to predict suitable areas for the conservation of the species for future planning. MaxEnt distribution modeling was used to model distributions. Results for past bioclimatic conditions show that the distribution area of the species expanded and then contracted (LIG to LGM and LGM to HOL). The modelling shows that the distribution range of the species will be narrower in the future. The species will be facing extinction towards 2070. Therefore, the conservation status of the species should be evaluated according to the present findings. Although the largest population of the Q. vulcanica is found in Isparta and Afyonkarahisar Provinces located in Southwestern Turkey, this area will not be suitable for the growth and survival of the species in the future. For this reason, a new nature reserve area should be established in a more suitable climate.

Źródło:

Dendrobiology; 2022, 88; 70-80
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 23.

Tytuł:

Testing the tightness of a square joint between oak wood elements

Autorzy:

Dobrowolska, Ewa
Karwat, Zbigniew
Kupiec, Daniel

Powiązania:

https://bibliotekanauki.pl/articles/24072248.pdf

Data publikacji:

2019

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

swelling pressure
roughness
tightness of joints
oak wood

Opis:

Testing the tightness of a square joint between oak wood elements. The study was carried out to determine the tightness of square joints between elements made of oak wood. To determine the degree of tightness of these joints, a device measuring the swelling pressure of oak wood under the influence of water humidification was designed. Checking the tightness of joints was carried out for surfaces obtained by machining through: grinding, milling, machine planing and manual planing. Contact angles at the phase boundary wood-water and their roughness achieved as a result of machining were also determined. During the wood swelling pressure test, the values of the preload of square joints were changed. The analysis of the results showed that the tightness of the square joint is influenced mainly by the roughness of the surface obtained as a result of machining and the size of the force of the initial load exerted on the moistened surfaces.
Badanie szczelności połączenia na styk elementów z drewna dębowego. W pracy przeprowadzono badanie szczelności połączeń na styk elementów wykonanych z drewna dębowego. Do ustalenia stopnia szczelności tych połączeń zaprojektowano urządzenie, mierzące ciśnienie pęcznienia drewna dębowego pod wpływem nawilżania wodą. Sprawdzanie szczelności połączeń przeprowadzono dla powierzchni uzyskanych w wyniku obróbki skrawaniem poprzez: szlifowanie, frezowanie, struganie grubościowe maszynowe i strugiem ręcznym. Określono również kąt zwilżania wodą powierzchni i ich chropowatość osiąganą w efekcie obróbki skrawaniem. W czasie badania ciśnienia pęcznienia drewna zmieniano wartości wstępnego obciążenia połączeń stykowych. Analiza wyników wykazała, że na szczelność połączenia na styk ma wpływ przede wszystkim chropowatość powierzchni uzyskana w rezultacie obróbki skrawaniem oraz wielkości siły wstępnego obciążenia wywieranego na nawilżane powierzchnie.

Źródło:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2019, 107; 139--148
1898-5912

Pojawia się w:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 24.

Tytuł:

Effects of elevated temperature and fluorine pollution on relations between the pedunculate oak (Quercus robur) and oak powdery mildew (Microsphaera alphitoides)

Autorzy:

Grzebyta, J
Karolewski, P.
Zytkowiak, R.
Giertych, M.J.
Werner, A.
Zadworny, M.
Oleksyn, J.

Powiązania:

https://bibliotekanauki.pl/articles/41557.pdf

Data publikacji:

2005

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

pedunculate oak
Quercus robur
environment pollution
phenol
tannin
lignin
carbohydrate
starch
nitrogen
fluorine
oak powdery mildew
Microsphaera alphitoides
soil pollution

Opis:

Effects of elevated temperature and soil pollution with fluorine on host-pathogen relations were studied in seedlings of the pedunculate oak (Quercus robur L.) inoculated with oak powdery mildew (Microsphaera alphitoides Griff. et Maubl.) and control seedlings. The plants were grown for 1month in elevated temperature (on average by 1.6°C) and soil pollution with sodium fluoride (330 ppm F). The above factors did not have any significant effect on nitrogen content of leaves or on concentrations of metabolites favourable to growth and development of the fungal pathogen (total non-structural carbohydrates, including soluble carbohydrates and starch) and those unfavourable to fungi (soluble phenols, condensed tannins and lignins). The elevated temperature and fluorine pollution did not affect the leaf infection rate. However, a significant temperature × pollution interaction was observed in inoculated seedlings. At the elevated temperature, fluorine caused a less severe infection by powdery mildew. This could be due to a direct toxic effect of fluorine on the pathogen or by an indirect influence, resulting from changes in levels of other metabolites, which were not analysed in this study. The inoculation of oak seedlings with powdery mildew caused a decline in the carbohydrate content of leaves but did not have any significant effect on levels of other analysed metabolites. However, it significantly affected the distribution of phenols and lignins in oak leaves. Those compounds accumulated within necrotic lesions and in adjacent cells. Our results do not enable drawing definite conclusions on effects of a slight rise in temperature and a relatively low level of fluorine pollution of the soil on relations between the pedunculate oak and oak powdery mildew. Lower values of the leaf infection rate in seedlings growing in elevated temperature and fluorine pollution suggest that in warmer years a lower level of infection by M. alphitoides may be expected in areas affected by fluorine pollution.

Źródło:

Dendrobiology; 2005, 53; 27-33
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 25.

Tytuł:

Analysis of growth and increment in height of common oak (Quercus robur L.)
Analiza wzrostu i przyrostu wysokości dębu szypułkowego (Quercus robur L.)

Autorzy:

Kazmierczak, K.
Pazdrowski, W.
Manka, K.
Szymanski, M.
Nawrot, M.

Powiązania:

https://bibliotekanauki.pl/articles/9717.pdf

Data publikacji:

2008

Wydawca:

Uniwersytet Przyrodniczy w Lublinie. Katedra Zastosowań Matematyki i Informatyki

Tematy:

common oak
oak
Quercus robur
plant growth
growth curve
tree
increment curve
height
variation coefficient
correlation coefficient
linear regression
multiple regression

Źródło:

Colloquium Biometricum; 2008, 38
1896-7701

Pojawia się w:

Colloquium Biometricum

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 26.

Tytuł:

Analiza jakościowa i wartościowa drewna dębowego w sprzedaży submisyjnej drewna cennego w RDLP w Katowicach
Quality and value analysis of oak wood in the submission sale of valuable wood in the Regional Directorate of the State Forests in Katowice

Autorzy:

Mirski, R.
Malinowski, Z.
Wieruszewski, M.

Powiązania:

https://bibliotekanauki.pl/articles/979172.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

oak wood
submission sales
wood defects
raw material price

Opis:

In special trade of the valuable wood raw material, in addition to system sales, the submission form is preferred. Increasing demand for high quality wood leads to an increase in market prices. Oak is that species that is devoted for the sale in the group of valuable wood in Poland. Oak timber have a number of features limiting their industrial significance. Its suitability is affected by quality and technical properties. The price level, which is a measure of the economic usefulness of wood, is affected by the share of defects and offered dimensions. The paper reviews the impact of not only the quality factor, but also indicates the correlation between the dimensional parameters of oak wood offered and the average sales prices of special raw material in the submission sales in the Regional Directorate of State Forests in Katowice. Attention was drawn to the influence of both the diameter of wood directed to trade at a constant log length. The paper presents the variability of oak wood prices, where a characteristic factor translating into an increase in the value of the raw material is undoubtedly the diameter of the logs of the valuable raw material.

Źródło:

Sylwan; 2020, 164, 06; 467-473
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 27.

Tytuł:

Density profile and hardness of thermo-mechanically modified beech, oak and pine wood

Autorzy:

Laskowska, Agnieszka

Powiązania:

https://bibliotekanauki.pl/articles/342480.pdf

Data publikacji:

2020

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna

Tematy:

beech
densification
density profile
European oak
hardness
Scots pine

Opis:

Beech (Fagus sylvatica L.), oak (Quercus robur L.) and pine (Pinus sylvestris L.) wood were volume-densified by means of thermo-mechanical modification. At first stage the wood was heated in a hydraulic press at temperature 100°C for 720 s, and then one-step densified in order to obtain the target thickness. The wood was cooled in a hydraulic press with unheated plates. Density profiles parallel and perpendicular to the grain were examined. The analysis of the density profiles was carried out on the basis of the following parameters: mean density, minimum to mean density ratio, maximum density, and the distance between the maximum density area and the wood surface. Wood hardness was determined according to the Brinell method. Volume-densified pine wood was characterized by considerably lower susceptibility to densification than beech or oak wood. Densified beech wood had the highest mean density 921 ±7 kg/m³, and the highest maximum density 968 ±12 kg/m³. The Brinell hardness of densified beech, oak and pine wood was twice as high as before the densification. The greatest hardness after the densification 78.60 ±10.56 N/mm² was observed in beech wood.

Źródło:

Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2020, 62, 205; 25-41
1644-3985

Pojawia się w:

Drewno. Prace Naukowe. Doniesienia. Komunikaty

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 28.

Tytuł:

Strength comparative analysis of furniture joints made of various materials

Autorzy:

Sydor, Maciej
Kwapich, Agnieszka
Pohl, Piotr

Powiązania:

https://bibliotekanauki.pl/articles/2146686.pdf

Data publikacji:

2021

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

furniture fastener
particle board
MDF
plywood
pine
oak
HPL

Opis:

The strength comparative analysis of furniture joints made of various materials. The influence of the load on the angular deformation of the furniture joint samples made of various materials was studied. The tests were carried out for six types of furniture materials: chipboard, MDF, hardwood plywood, glued pine wood, glued oak wood and HPL and for three types of fasteners with different ways of fixing in connected elements: shape-thread, expansion-expansion and expansion-thread way of anchoring in material of boards. The joint samples were loaded with a bending moment only (without inducing transverse loadings). The maximum load capacity and load capacity at the 3° (0.052 rad) sample rotation was measured and then the stiffness coefficients were calculated. Considerable differences were found between HPL and others lignocellulosic materials. Expansion fasteners offer incredibly low joint rigidity. This was observed for all tested furniture materials, from soft (chipboard) to very hard (HPL). Expansion connectors work better in soft lignocellulosic materials than in hard materials. The main advantage of expansion fasteners, in comparison to shape-thread fasteners, is its low visibility in the joint and the technological ease of assembly. On the other hand, thread-shaped connectors offer much greater strength and stiffness of joints.
Analiza porównawcza wytrzymałości połączeń meblowych wykonanych z różnych materiałów. Zbadano wpływ obciążenia na odkształcenie kątowe próbek połączeń wykonanych z różnych materiałów stosowanych w meblarstwie: płyty wiórowej, MDF, sklejki liściastej, drewna sosnowego klejonego, drewna dębowego klejonego oraz HPL. W badaniach wykorzystano trzy rodzaje łączników: gwintowo-kształtowy (mimośrodowy), rozprężnorozprężny i gwintowo-rozprężny. Próbki połączeń zostały obciążone wyłącznie momentem zginającym (bez wywoływania sił ścinających). Zmierzono nośność maksymalną oraz nośność przy odkształceniu 3° (0,052 rad), a następnie obliczono współczynniki sztywności połączeń. Stwierdzono znaczne różnice w wytrzymałości między HPL a innymi materiałami lignocelulozowymi. Łączniki rozprężne zapewniają bardzo małą sztywność połączenia. Zaobserwowano to dla wszystkich badanych materiałów meblowych, od miękkich (płyta wiórowa) po bardzo twarde (HPL). Łączniki tego typu lepiej sprawdzają się w miękkich materiałach lignocelulozowych niż w materiałach twardych. Główną zaletą łączników rozporowych, w porównaniu do łączników gwintowo-kształtowych, jest ich mała widoczność w połączeniu oraz technologiczna łatwość montażu. Z drugiej strony łączniki gwintowokształtowe oferują znacznie większą wytrzymałość i sztywność połączeń.

Źródło:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2021, 113; 89--98
1898-5912

Pojawia się w:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

Dostawca treści:

Biblioteka Nauki

/5

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Tytuł:

Rozprzestrzenienie obcych gatunków drzew w lasach Nadleśnictwa Nurzec (północno-wschodnia Polska)

Autorzy:

Pietrzak-Zawadka, Joanna
Romaniuk, Anatol

Powiązania:

https://bibliotekanauki.pl/chapters/31342615.pdf

Data publikacji:

2022

Wydawca:

Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej

Tematy:

alien species
invasion
black cherry
red oak
black locust

Opis:

The paper presents and characterizes alien tree species in Polish forests in the Nurzec Forest District in the Milejczyce Forest District (northeastern Poland). The history of the spread of synanthropic plants worldwide and their classification according to their origin, the intention of introduction, manner, history of spread, degree of establishment, and type of habitats occupied are briefly mentioned. Information on the causes and methods of preventing the spread of species of alien origin were also included. The main invasive alien species in the Milejczyce Forestry were: Prunus serotina, Quercus rubra, and Robinia pseudoacacia. After the analysis, general conclusions were made regarding the occurrence of invasive species and methods of their control in the forests of the Milejczyce Forest District.

Źródło:

Lasy przyszłości. Wyzwania współczesnego leśnictwa; 101-112
9788367185462

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 30.

Tytuł:

Contrasting foliar and soil nutrients responses to drought induced crown dieback in a Quercus brantii forest

Autorzy:

Hosseini, A.
Hosseini, S.M.

Powiązania:

https://bibliotekanauki.pl/articles/2130168.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

crown condition
drought
nutrients
persian oak forests
tree decline

Opis:

Evidence has shown that drought-induced crown dieback has significant interaction with soil-plant water and nutrients relationships, but there isn’t sufficient knowledge of the water and nutrients connections in declining Persian oak (Quercus brantii) trees. To investigate the relationships between crown dieback and leaf nutrients concentrations, leaf water content, soil nutrients concentrations and soil moisture, one of the dieback affected stands was selected. This stand was located in Shalam forested area in northern Ilam province, west of Iran. Persian oak trees were evaluated using a crown dieback classification and divided into four classes with four replicates based on the severity of crown dieback. Sampling from leaves of trees and soil was implemented randomly in four sides of tree crown in August. Trees with moderate to severe declining showed reduced leaf water content (WC) and reduced relative leaf water content (RWC). Leaf N and P concentration of declining trees was significantly (p-value <0.05) more than that of healthy trees. The leaf K concentration of declining trees was significantly (p-value <0.10) more than that of the healthy. The leaf N:P amounts of oak trees was statistically different among crown dieback classes. But no significant differences was observed between the healthy and declining trees in terms of soil N, P, K, Ca and Mg concentrations and soil moisture. It was concluded that drought has effects on the nutrients status in the leaves of Persian oak trees and their changing in the declining trees is for resistance to drought condition, improving water use efficiency and possibly performance of vital activities.

Źródło:

Dendrobiology; 2022, 87; 101-112
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 31.

Tytuł:

Galasy rodzimych gatunków dębu jako potencjalny surowiec garbnikowy
Gall-nuts of native oak species as a potential tannin raw material

Autorzy:

Bilek, M.
Kozlowska-Tylingo, K.
Gostkowski, M.
Staniszewski, P.

Powiązania:

https://bibliotekanauki.pl/articles/980195.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
uboczne uzytkowanie lasu
dab
Quercus
galasy
garbniki
taniny
zawartosc garbnikow
forest utilisation
non−wood forest products
oak
oak gall−nuts
tannins

Opis:

Oak gall−nuts are pathological excrescences on the leaves of oaks (in Poland: Quercus robur L. and Q. petraea Liebl.) created by the Cynips quercusfolii L. The potential medical use of these non−wood forest products should be taken under consideration because of widespread use in folk medicine, but also because of the presence of gall−nuts of Middle Eastern oak species Quercus infectoria in the current Farmakopea… [2017]. The aim of this study was the preliminary analyzes of Quercus robur L. galls in the context of the diversity of the raw material and its possible consequences for the variability in tannin content, and therefore for the therapeutic value. The galls were collected in September 2018 from five living trees forming compact mid−field tree plantation in Podkarpackie Region (SE Poland). To determine the tannin content, hide powder method was used, while mass spectrometry was used for determining the identity of the raw material. The tannin content was found to be between 10.02 ±0.2% and 15.47 ±0.07%. There were no statistical differences between the tannin content of four weight groups of tested gall−nuts. The analysis of mass spectra showed the presence of gallic acid and tannin disintegration products. The results indicate that the tannin content in domestic oak galls is lower than in Quercus infectoria ones, for which less than 20% is required, however Polish galls are still the richest native tannin raw material. It was not proved that the content of tannins in oak galls was influenced by their size. A large variation in tannin content depending on the sample suggests that it might be possible to identify i.e. forest sites or climatic zones, where the obtained gall−nuts will be characterized by the high tannin content.

Źródło:

Sylwan; 2019, 163, 09; 746-753
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 32.

Tytuł:

Ornithocomplex changes of the pine-oak forest due to the participation of the introduced population of Quercus rubra L.
Zmiany ornitokompleksu boru sosnowo-dębowego zawiązane z udziałem wprowadzanej populacji Quercus rubra L.

Autorzy:

Gaychenko, Vitaly
Shupova, Tatiana
Illienko, Volodymyr

Powiązania:

https://bibliotekanauki.pl/articles/27322936.pdf

Data publikacji:

2021

Wydawca:

Uniwersytet Pomorski w Słupsku

Tematy:

α-diversity indices
ornithocomplex
pine-oak plantation
Quercus rubra L.

Opis:

To date, the issues of the Quercus rubra L. ecological niche formation, adaptation of its introduced populations, competition with populations of native trees in the secondary range forests remain open. Purpose: to conduct an inventory of the pine-oak forests ornithocomplex with the participation of the population of Q. rubra on the territory of the Boyarka Forestry Research Station (Ukraine), to give a comparative analysis of the pine-oak forests ornithocomplexes with Q. rubra and Q. robur as a result of the participation of the introduced species in the conditions transformation of birds habitats. It was revealed that because of the replacement of native Q. robur with adventive Q. rubra in pine-oak plantations, a significant decrease in the species composition (from 24 to 15 species) occurs in ornithocomplexes during the nesting period. The value of the Sorensen index for model ornithocomplexes is 0.62. The average number of birds in both cultural phytocenoses is similar: 2.59 ± 0.50 individuals/km of the account line in subors with Q. robur and 2.51 ± 0.57 individuals/km with Q. rubra. The replacement of Q. robur with Q. rubra does not significantly affect the value of the synanthropization index (0.46 with Q. robur and 0.47 with Q. rubra); does not adversely affect ground-nesting species (L. arborea, A. trivialis, T. troglodytes, Ph. trochilus, Ph. sibilatrix), indicating the presence of nesting stations for vulnerable species. Parus major L., Phylloscopus collybita Vieillot, Ph. sibilatrix species dominate in the forest without introduced trees; with Q. rubra – species Turdus pilaris L., P. major, Anthus trivialis L. predominate. Both types of pineoak plantations provide a full-fledged food resource for birds feeding on invertebrates and mixed feeds. The absence of predator birds, especially hawks, in the forest with Q. rubra is most likely due to the depletion of the food supply due to a smaller species composition and a smaller number of prey. As a result, predators visit subors with Q. rubra less often. The data of all species diversity indices are significantly higher for ornithocomplexes of model pine-oak forests with Q. robur. Dominance indexes data do not include synchrony (Simpson index data are stable, Berger–Parker index is higher in stands with Q. rubra, and McIntosh index – with Q. robur respectively). The data for the indices of species distribution uniformity are close.

Źródło:

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline; 2021, 25; 9-18
1643-0115

Pojawia się w:

Baltic Coastal Zone. Journal of Ecology and Protection of the Coastline

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 33.

Tytuł:

Geographic distribution of Turkish oaks

Autorzy:

Uslu, E.
Bakis, Y.

Powiązania:

https://bibliotekanauki.pl/articles/41702.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

oak
Quercus
species richness
cluster analysis
geographic distribution
Turkey [geogr.]

Opis:

Distribution of Turkish Quercus L. has a crucial value since Turkey is a transition place between Europe and Asia and located at the meeting point of three phytogeographical regions. To compare the diversity of species and to find the distribution patterns of oaks, species richness of the most current distributions were studied. Relationships of phytogeographical regions and presence of the Anatolian Diagonal relevant to oak distributions were also investigated. Analyses were performed on Davis'grid square system. The highest richness of Quercus species were found at north-western Turkey which were located in the meeting place of Asia and Europe. The lowest richness scores were found at eastern and south-eastern Anatolia. Moreover, latitude, longitude and altitude histograms showed a correlation with species richness. However, the presence of Anatolian Diagonal is partially supported.

Źródło:

Dendrobiology; 2012, 67
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 34.

Tytuł:

Climatic sensitivity of Quercus robur L. in floodplain near Kyiv under river regulation

Autorzy:

Netsvetov, Maksym
Prokopuk, Yulia
Didukh, Yakiv
Romenskyy, Maksym

Powiązania:

https://bibliotekanauki.pl/articles/956963.pdf

Data publikacji:

2018

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

pedunculate oak
tree-ring width
riparian forest
dendroclimatology
moving correlation

Opis:

Climate change has a significant impact on natural ecosystems, particularly on floodplain forests that are among the most transformed ecosystems in the world. The climate sensitivity of dominant species is likely to play a key role in determining the susceptibility of flooded forests to climate changes. Here, we use dendrochronological approaches and local climate records from 1880 to 2015 to assess the response in pedunculate oak (Quercus robur L.) trees growing in a floodplain of the Dnipro River near Kyiv to climatic variables. Correlation analysis reveals the strongest positive association of the Q. robur tree-ring width chronology with May–June precipitation, May–June temperature, and May self-calibrating Palmers drought severity indices (scPDSI). The moving-window correlation analysis points to positive association with the scPDSI after the 1950s, when local river regulation was implemented. The positive correlation with current March precipitation is the least expected change in the oak growth-to-climate relationship that occurred in the aftermath of human alterations in the local river and regional climate changes. This study discusses the probable ecological consequences and ecophysiological mechanisms of observable climate-to-growth relationships and their temporal stability.

Źródło:

Dendrobiology; 2018, 79; 20-33
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 35.

Tytuł:

Zastosowanie biostymulatorów w hodowli i ochronie sadzonek dębu szypułkowego (Quercus robur L.) w gruntowej szkółce leśnej
Application of biostimulators in the growth and protection of pedunculated oak (Quercus robur L.) seedlings in bare-root nursery

Autorzy:

Buraczyk, W.
Żybura, H.
Ostaszewska, E.
Studnicki, M.
Aleksandrowicz-Trzcińska, M.

Powiązania:

https://bibliotekanauki.pl/articles/979060.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

plant biostimulants
chitosan
humic acid
fulvic acid
silicon
pedunculate oak

Opis:

Pedunculate oak is a species of major economic importance in Polish forests. This species seedlings constitute 18.9% of the nursery production in the country. One of the most widespread fungal disease these oaks face is the oak powdery mildew induced by Erysiphe alphitoides. Nursery production is on the lookout for environment−friendly means of plant protection as well as growth simulators capable of raising levels of productivity. Our objectives was to assess two preparation treatments regarded as biostimulators (registered as fertilisers under the names Apol−Humus and Apol−Hum Chelat) in the raising of seedlings of pedunculate oak in bare−root nursery conditions. The experiment included 6 variants with seedlings treated with the above agents, protected against mildew in the traditional way using Falcon 460 EC, treated with fertiliser and fungicide at the same time, or left as control specimens with no measures taken. All preparations were applied by means of foliar spraying 5 times in the course of the season. Survival of seedlings was then assessed at the season end, along with biometric features like root−collar diameter, length of main root and stem, dry mass of leaves and stem, and degree of oak powdery mildew attack. Results indicated curtailment of mildew infection of oak seedlings thanks to both of the biostimulators, albeit to a more limited extent than when fungicide was applied. No stimulation of seedling growth was achieved, however, though the most favourable biometric parameters characterised the oaks supplied with both biostimulator and fungicide. Significantly higher survival rate was noted for oaks offered effective protection against mildew, in the variants with the fungicide or with simultaneous application of Apol−Humus or Apol−Hum Chelat with Falcon. The research points to the two biostimulators under study (based on natural components) being suitable for use in the nursery production of pedunculate oak seedlings, with it being presumed that either or both can allow for reduction in amount of fungicide necessary to be used to safeguard seedlings against mildew.

Źródło:

Sylwan; 2020, 164, 04; 292-299
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 36.

Tytuł:

Transformation of Forest Vegetation after 40 Years of Protection in the Tomczyce Nature Reserve (Central Poland)

Autorzy:

Kiedrzyński, Marcin
Zielińska, Katarzyna
Grzelak, Paulina

Powiązania:

https://bibliotekanauki.pl/articles/764874.pdf

Data publikacji:

2011

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

forest regeneration
mixed pine-oak forest
nature protection
Central Poland

Opis:

The Tomczyce nature reserve is characterized by a degenerated forest vegetation. We assume that the regeneration process was possible to launch after the establishment of the nature reserve in 1968. The vegetation of the Tomczyce forest complex was characterized for the first time by Jakubowska-Gabara (1976) whose studies were taken as a basis of our research. The phytocenoses after 40. years of protection have a greater participation of species with higher trophic and moisture requirements. The regeneration process in communities with pine trees is caused by an expansion of broad-leaved trees and shrubs. Transformation of forest vegetation causes a decrease in cover of thermophilous and heliophilous species. On the other hand, species of oak-hornbeam forests as well as anthropophytes are in expansion. Planning of the protection activities in the nature reserve needs to include these dynamic tendencies of the vegetation.

Źródło:

Acta Universitatis Lodziensis. Folia Biologica et Oecologica; 2011, 7; 207-227
1730-2366
2083-8484

Pojawia się w:

Acta Universitatis Lodziensis. Folia Biologica et Oecologica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 37.

Tytuł:

Forest plantation productivity - soil interactions within Western Forest-Steppe of Ukraine: effects of pH and cations

Autorzy:

Raspopina, Svitlana
Debryniuk, Yuriy
Hayda, Yuriy

Powiązania:

https://bibliotekanauki.pl/articles/2041494.pdf

Data publikacji:

2020

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

forest plantation
larch
spruce
oak
potential acidity
absorbed bases
movable aluminium

Opis:

Dark grey podzolized soils on the loess like loams, which are represented in the soil cover within fresh and humidity gradients in the Western Forest Steppe of Ukraine, are characterized by high forest vegetation potential, which ensure the formation of mostly pure and mixed larch and spruce stands with high level of the productivity. Despite the fact that both species are coniferous, their effect on the soil, in particular, on its acid-base indicators (actual and potential forms of acidity, sum of absorbed bases, degree of saturation of bases, content of mobile aluminium), which are important components of soil fertility, are specific. Due to the fact that there is a close interaction between forest plantations and soil properties, changing the participation of species in the stand, it is possible to adjust the actual soil fertility. The soils under both pure and mixed spruce and larch stands are characterized by a high level of potential acidity that reaches the high acidic values in the upper horizons. A similar reaction of soil solution under coniferous forests is caused by acid hydrolysis of aluminosilicates and accumulation of mobile Al in the rhizosphere zone. Simultaneously, the same acidic characteristics, including the presence of movable aluminium, are also found in soils under broadleaved plantations. In general, acid-exchange properties of soils (high potential acidity, unsaturation of bases and availability of movable aluminium) traditionally are considered as unfavourable for vegetation. However, our researches refute it and prove that within certain values, these indicators do not limit the productivity of pure and mixed spruce and larch stands.

Źródło:

Folia Forestalia Polonica. Series A . Forestry; 2020, 62, 4; 233-245
0071-6677

Pojawia się w:

Folia Forestalia Polonica. Series A . Forestry

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 38.

Tytuł:

The effect of pressure on the compaction parameters of oakwood sawdust enhanced with a binder
Wpływ ciśnienia na efektywność zagęszczania trocin dębowych z dodatkiem lepiszcza

Autorzy:

Kulig, R.
Skonecki, S.
Lysiak, G.
Laskowski, J.
Rudy, S.
Krzykowski, A.
Nadulski, R.

Powiązania:

https://bibliotekanauki.pl/articles/792211.pdf

Data publikacji:

2013

Wydawca:

Komisja Motoryzacji i Energetyki Rolnictwa

Tematy:

compaction parameter
pressure
binder material
calcium lignosulphonate
sawdust
oak wood
biomass

Źródło:

Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2013, 13, 1
1641-7739

Pojawia się w:

Teka Komisji Motoryzacji i Energetyki Rolnictwa

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 39.

Tytuł:

Diversity of flora in the undergrowth of park afforestations, rural plantings and oak-hornbeam forests

Autorzy:

Fornal-Pieniak, B.
Ollik, M.

Powiązania:

https://bibliotekanauki.pl/articles/38431.pdf

Data publikacji:

2013

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

flora
diversity
undergrowth
park
afforestation
rural planting
oak-hornbeam forest
forest

Opis:

The process of forest fragmentation has been observed in many countries, where plant species had adapt to different habitats, such as for example manor parks and rural plantings. A number of scientists have studied the parks as sites where waning environments and landscapes find their shelter. In 2011–2012, research was undertaken on diversity of vegetation in afforestations of parks, rural plantings and oak-hornbeam forests in Sandomierz Basin. In order to compare the means obtained univariate analysis of variance (one-way ANOVA) was used with juxtaposing divided by each of the two criteria: size (the small, and large parks) and conservation(cultivated parks and nonclutivated parks). Tukey’s test was used to examine the significance of differences between respective groups. Analyses were with STATISTICA 9.1. software. Plants classified as forest species, grassland species and those of synanthropic communities were observed in all the afforestations. The parks with high wooded and not mowed areas and oak-hornbeam forests were more forest-like than other types of afforestations studied.

Źródło:

Folia Forestalia Polonica. Series A . Forestry; 2013, 55, 3
0071-6677

Pojawia się w:

Folia Forestalia Polonica. Series A . Forestry

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 40.

Tytuł:

Results of inoculation of beech (Fagus sylvatica L.) and oak (Quercus sp.) stumps with Pleurotus ostreatus (Jacq.: Fr.) Kumm.
Wyniki szczepienia pniaków bukowych (Fagus sylvatica L.) i dębowych (Quercus sp.) grzybnią boczniaka ostrygowatego (Pleurotus ostreatus [Jacq.: Fr.] Kumm.)

Autorzy:

Szczepkowski, A.
Pietka, J.

Powiązania:

https://bibliotekanauki.pl/articles/38624.pdf

Data publikacji:

2008

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

inoculation
artificial inoculation
beech
Fagus sylvatica
oak
Quercus
stump
Pleurotus ostreatus

Opis:

The article presents the results of inoculation of beech and oak stumps with a biological preparation of oyster fungus (Pleurotus ostreatus) mycelium. The inoculum was grown on a sawdust substrate at Warsaw University of Life Sciences Department of Mycology and Forest Phytopathology. The experiment was set up at the Forest Experimental Station in Rogów. Stumps were inoculated: i) immediately after tree felling or ii) at approximately 5 and 12 months after felling. A total of 60 beech stumps and 50 oak stumps were inoculated in the years 2002– 2004. The infected stumps were then inspected for the presence of the mycelium and fruiting bodies of P. ostreatus. The presence of fruiting bodies of other wood-decaying fungi was also noted. The extent of rotting was determined macroscopically, with the causal agent being confirmed on the basis of isolation and identification of mycelium from fragments of colonized wood obtained from rooted-out stumps. Oyster fungus mycelium was found to colonise beech stumps much more effectively than oak stumps. Stumps inoculated immediately after, or five months after felling were more effectively colonized by the mycelium than those inoculated after one year.
Zbadano możliwości wykorzystania boczniaka ostrygowatego (Pleurotus ostreatus) do szczepienia pniakow bukowych i dębowych w celu ograniczania bazy pokarmowej opieniek (Armillaria spp.). Biopreparat na podłożu trocinowym przygotowano w Zakładzie Mikologii i Fitopatologii Leśnej SGGW w Warszawie. Doświadczenie założono na 5 powierzchniach, na siedlisku LMśw, w Nadleśnictwie Rogow. Na wszystkich powierzchniach przed założeniem doświadczenia obserwowano występowanie objawów opieńkowej zgnilizny korzeni. Inokulowano pniaki powstałe zaraz po ścięciu drzew oraz ok. 5- i 12-miesięczne. W sumie, w latach 2002– 2004, zaszczepiono 60 pniaków bukowych i 50 dębowych. Na zainfekowanych pniakach oceniano występowanie grzybni i owocników boczniaka ostrygowatego oraz obecność innych gatunków grzybów wielkoowocnikowych. Makroskopowo określano zasięg widocznej zgnilizny i potwierdzano sprawcę (Pleurotus ostreatus) poprzez izolację i identyfikację grzybni z fragmentów drewna wykarczowanych trzech pniaków bukowych i trzech dębowych. Stwierdzono, że grzybnia boczniaka ostrygowatego znacznie skuteczniej kolonizowała pniaki bukowe niż dębowe. Pniaki powstałe zaraz po ścięciu drzewa oraz 5-miesięczne były efektywniej zasiedlane przez grzybnię boczniaka niż pniaki inokulowane po roku od momentu ich powstania. W trakcie trwania doświadczenia na szczepionych pniakach bukowych odnotowano owocniki 19 gatunków grzybów wielkoowocnikowych, a na pniakach dębowych 16 gatunków. Pniaki bukowe najliczniej były kolonizowane przez Bjerkandera adusta i Trametes versicolor, natomiast pniaki dębowe przez Stereum hirsutum.

Źródło:

Folia Forestalia Polonica. Series A . Forestry; 2007-2008, 49-50
0071-6677

Pojawia się w:

Folia Forestalia Polonica. Series A . Forestry

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 41.

Tytuł:

The strength properties of Swedish oak and beech
Właściwości wytrzymałościowe szwedzkiego drewna dębowego i bukowego

Autorzy:

Gustafsson, S.

Powiązania:

https://bibliotekanauki.pl/articles/52257.pdf

Data publikacji:

2010

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna

Tematy:

Sweden
beech wood
oak wood
strength property
testing
wood
Young's modulus

Opis:

Because of their economic impact most research on wood in Sweden is aimed at our needle-leaved species, i.e. pine and spruce. Sawmills and other industrial enterprises using these conifers are also in vast majority, both in number of employees and number of companies. However, there is a viable industrial branch in Sweden, i.e. furniture companies, dealing with broad-leaved species such as oak, birch, and alder. Such industries often import all the wood they use, even if the same type of wood grows in the vicinity. In order to make the Swedish broad-leaved trees more interesting to the wood manufacturing sector, we examined the strength properties of some common Swedish woods, viz. oak and beech. The result shows that our oak specimens had a modulus of elasticity of 12.243 MPa measured by using four-point bending. So-called the Young’s modulus was 11.761 MPa for tension and 15.610 MPa for compression in the fibre direction, i.e. there was a very high difference. The stress just before rupture was measured to 85 MPa for tension and 76 MPa for compression, i.e. there was a surprisingly small difference. For beech, our corresponding values were 13.017 MPa for four-point bending, the Young’s modulus during tension was 13.954 MPa and 130.4 MPa in maximum stress, whilst under compression these values were 13.101 MPa and 84 MPa, respectively.
Ze względu na znaczący wpływ na gospodarkę, większość badań drewna w Szwecji koncentruje się na gatunkach drzew iglastych, w szczególności na sośnie i świerku. Drewno drzew liściastych stosowane np. w meblarstwie jest w większości importowane. W celu zwiększenia zainteresowania szwedzkim drewnem liściastym wśród producentów, podjęto badania właściwości wytrzymałościowych drewna dębowego i bukowego pozyskiwanego w Szwecji. Określono wartości wytrzymałości przy rozciąganiu i ściskaniu oraz modułu sprężystości przy rozciąganiu, ściskaniu i zginaniu. Oznaczono gęstość i wilgotność badanych próbek. Badania przeprowadzono zgodnie ze szwedzkimi normami. Zginania dokonywano w schemacie czteropunktowym, jako dającym precyzyjniejsze wyniki modułu sprężystości niż badania w schemacie trzypunktowym. Wilgotność drewna określano metodą suszarkowo-wagową. Badaniom poddano stosunkowo niewiele próbek, w sumie 60 sztuk dla obu gatunków i wszystkich badanych właściwości. W celu uzyskania bardziej reprezentatywnych wyników należy przeprowadzić badania kilkuset lub nawet kilku tysięcy próbek. Na podstawie uzyskanych wyników można stwierdzić, iż szwedzkie drewno bukowe jest bardziej wytrzymałe niż drewno dębowe, co można było założyć na podstawie większej gęstości drewna bukowego. Ponadto wartości wyznaczonych wielkości odpowiadają wartościom znalezionym w literaturze.

Źródło:

Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2010, 53, 183
1644-3985

Pojawia się w:

Drewno. Prace Naukowe. Doniesienia. Komunikaty

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 42.

Tytuł:

Zagłada Królewskiego Dębu” : w 70. rocznicę wydarzeń

Autorzy:

Holicki, Wojciech.
Czajkowski, Dariusz.

Powiązania:

Morze Statki i Okręty 2009, nr 10, s. 22-34

Data publikacji:

2009

Tematy:

Royal Oak (okręt) zatopienie
II wojna światowa (1939-1945)
Działania morskie

Opis:

Fot.

Dostawca treści:

Bibliografia CBW

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Skocz do pozycji: 43.

Tytuł:

Zastosowanie technik biologii molekularnej do detekcji Erysiphe alphitoides (Griffon & Maubl.) U. Braun and S. Takam. w organach roślinnych
Applying the molecular biology techniques to the detection of Erysiphe alphitoides (Griffon & Maubl.) U. Braun and S. Takam. in plant parts

Autorzy:

Roszak, R.
Baranowska, M.
Belka, M.
Behnke-Borowczyk, J.

Powiązania:

https://bibliotekanauki.pl/articles/979672.pdf

Data publikacji:

2019

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
drzewa lesne
dab
Quercus
paki
liscie
pedy
maczniak prawdziwy debu
Erysiphe alphitoides
wykrywanie
techniki biologii molekularnej
oak powdery mildew
sessile oak
overwintering
fungal diseases
its

Opis:

Erysiphe alphitoides causes the most common disease of assimilation apparatus of oaks of different age. It is believed that the pathogen overwinters in buds of the host plant or in the cracks of the bark. The aim of the study was to search for the presence of E. alphitoides in buds, leaves, and wood of sessile oak shoots using molecular techniques. Two hypotheses have been tested: (i) oaks are infected by E. alphitoides, and (ii) the pathogen overwinters in the host plant buds. The samples used in the study were collected form sessile oak trees (Miradz Forest District; 52°41'23.197'N, 18°25'33.942'E) in 2017, and consisted of dormant buds (collected in May), young leaves (collected in June), leaves with visible symptoms of the disease (collected in August), shoot with sip and surface layers of wood (collected in December). Additional part of buds was collected in May 2018. The PCR reaction was carried out with primers specific for E. alphitoides and E. hypophylla. For species identification Sanger method was used. The resulting sequences were compared using BLAST algorithm with reference sequences deposited in the NCBI database. Sequences from isolates obtained from leaves showed 97−99% similarity to the reference sequence of E. alphitoides. Pathogen did not occur in the superficial layers of shoots and buds. As some studies show, at very low temperatures (below –20°C), the mycelium of the pathogen dies, therefore further study should be undertaken on wintering of the pathogen causing the powdery mildew disease on oaks. It also should be examined whether the pathogen overwinters in the form of bagnial spores produced in chasmothecia overwintering on leaves, in the leaf buds, or in bark cracks, and whether the wintering site of the pathogen is related to the age of trees and or to the stands where the trees grow.

Źródło:

Sylwan; 2019, 163, 09; 740-745
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 44.

Tytuł:

Ocena korytarzowej metody uprawy dębu (Quercus sp.) na przykładzie obiektów badawczych w nadleśnictwach Mircze i Kościan
Evaluation of the corridor method for oak (Quercus sp.) cultivation using research objects in the Mircze and Koscian Forest Districts as an example

Autorzy:

Paluch, R.
Gil, W.

Powiązania:

https://bibliotekanauki.pl/articles/1292277.pdf

Data publikacji:

2018

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

lesnictwo
drzewa lesne
dab
Quercus
uprawa korytarzowa
ocena hodowlana
hodowla lasu
odnowienia lasu
Nadlesnictwo Mircze
Nadlesnictwo Koscian
oak
corridor method
oak cultivation
forest regeneration
stand tending

Opis:

The corridor method of oak (Quercus sp) cultivation is an old, forgotten silvicultural method. It was developed around the turn of the 19th and 20th century on the south-eastern borders of Poland (Podole, Wołyń) and Russia and made use of other species such as hornbeam, linden and birch as a cover for oak, which is a tree species sensitive to frosts. The nowadays recurring phenomenon of oak disease initiated a search for silvicultural alternatives and thus the usefulness of reviving the corridor method for oak regeneration was investigated by examining existing tree stands established in this way. Our research plots were located in five young stands and two in mature as well as old stands. In the stands of the 2nd and 3rd age classes, the density of oaks was observed to be 1500 - 3500 /ha, which accounted for 30-50%. The density of oak in old stands (7th age class) was similar to model-predicted values. Furthermore, the corridor method gave very good production results as exemplified by the oak stands growing on the fresh broadleaved site, which had a very high stand quality index. In addition, the species composition was observed to diversify throughout these oak stands’ development, thus supporting arguments for the conservation and preservation of oak-hornbeam forests. To summarise, the prerequisites for the success of the corridor method are systematic cuts of young stands (forest cultures and thickets) to inhibit the growth of accompanying undesired species and limiting the number of grazing animals.

Źródło:

Leśne Prace Badawcze; 2018, 79, 1
1732-9442
2082-8926

Pojawia się w:

Leśne Prace Badawcze

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 45.

Tytuł:

Rozpoznawanie jesiennych faz fenologicznych dębu bezszypułkowego (Quercus petraea Liebl.) na ortomozaikach zdjęć lotniczych uzyskanych z wykorzystaniem drona
Monitoring of sessile oak (Quercus petraea Liebl.) autumn phenology using orthomosaics made on a basis of aerial images acquired with drone

Autorzy:

Łoziński, A.
Będkowski, K.

Powiązania:

https://bibliotekanauki.pl/articles/132277.pdf

Data publikacji:

2016

Wydawca:

Polskie Towarzystwo Geograficzne

Tematy:

dąb bezszypułkowy
fenologia
bezzałogowy statek powietrzny
Sessile oak
Quercus petraea
phenology
UAV

Opis:

Changes to beginning and the length of the growing season and the phenological stages can be of great importance for the individual trees, their populations and the populations of other species. The aim of the research described in this paper is to assess the ability to recognize the autumn phenological phases in single trees of the sessile oak, using UAV images. In our study we have examined if we can on this basis rank the trees according to their preparation for winter dormancy. There were 20 observers involved in the research whose objective was to pass each of 114 trees to one of five classes, based on the dominant color of assimilation apparatus observed on an orthomosaic. Distinguished color classes of oaks were: 1 - green, 2 - greenish-yellow, 3 - yellow, 4 - yellowbrown and 5 - brown. The analysis revealed that only 6 of all trees (5 green and one greenish-yellow) were classified by all observers to the same group. Other trees were classified to different colors, and in the case of 25 trees (22%), the number of the same color indicated was less than or at most equal to 12. The applied color scale did not correspond fully to colors perceived by the participants. After completion of the study, all said they ran out of green-brown color, and the crowns of trees that could be assigned to that color, were therefore classified as greenish-yellow, yellow or yellow-brown. In further research it is necessary to explain the causes of green-brown color observed in some trees, as well as its natural meaning and place in a chain of crown colors changes taking place during autumn, using methods of digital image analysis.

Źródło:

Teledetekcja Środowiska; 2016, 55; 5-14
1644-6380

Pojawia się w:

Teledetekcja Środowiska

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 46.

Tytuł:

ŚWIETLISTA DĄBROWA POTENTILLO ALBAE-QUERCETUM LIBBERT 1933 NOM. INVERS. W ŚRODKOWEJ CZĘŚCI WYŻYNY KRAKOWSKO-CZĘSTOCHOWSKIEJ
thermophilous oak forest POTENTILLO ALBAE-QUERCETUM LIBBERT 1933 NOM. INVERS. in the central part of the KRAKóW- -CZĘSTOC HOWa Upla nd

Autorzy:

Brzeg, Andrzej
Wika, Stanisław

Powiązania:

https://bibliotekanauki.pl/articles/896403.pdf

Data publikacji:

2017

Wydawca:

Poznańskie Towarzystwo Przyjaciół Nauk

Tematy:

phytosociology
thermophilous oak forest
new localities
Natura 2000 site
floristic peculiarities
Polska

Opis:

The paper presents the results of phytosociological research on the thermophilous oak forest Potentillo albae-Quercetum Libbert 1933 nom. invers., which has been carried out in the central part of the Kraków-Częstochowa Upland. The association, which has been stated in 7 localities, is a new type of forest vegetation in this region. On the basis of 35 relevés, made in 2001 following the Braun-Blanquet method, the only subassociation P.a.-Q. brachypodietosum pinnati has been distinguished. It has been divided into two variants: with Pleurozium schreberi (on acid sites), and with Asarum europaeum (on basic ones). The investigated phytocoenoses abound in floristic peculiarities, such as: Adenophora liliifolia, Bupleurum longifolium, Euphorbia angulata, Festuca amethystina ssp. ritschlii, Lilium martagon, Potentilla alba.

Źródło:

Badania Fizjograficzne Seria B - Botanika; 2017, 65; 7-38
2082-3339

Pojawia się w:

Badania Fizjograficzne Seria B - Botanika

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 47.

Tytuł:

Fungi and minerals occurring in heartwood discolorations in Quercus robur trees

Autorzy:

Przybyl, K

Powiązania:

https://bibliotekanauki.pl/articles/58265.pdf

Data publikacji:

2007

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

heartwood discolouration
dendrology
mineral
trunk heartwood
enzyme
tree
fungi
Quercus robur
oak

Opis:

The studied Quercus robur trees were oaks protected as monuments of nature (200-350 years old) and oaks growing in forest stands (200-300 years old). The most visible symptoms occurring in aboveground organs included defoliation (25-75%), dying of twigs and branches. Discoloured heartwood, obtained with an 80-cm Pressler borer, differed in colour intensity from normal wood and was divided into two groups: stained brown and dark brown. The brown-stained heartwood was a more active site, considering the number of fungi and their ability to produce enzymes (phenoloxidase, pectinase and cellulase) in comparison with the dark-brown-stained heartwood. This brown-stained heartwood contained also statistically more Ca, Mg and Mn.

Źródło:

Acta Societatis Botanicorum Poloniae; 2007, 76, 1
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 48.

Tytuł:

Effects of environmental factors and management on dynamics of mixed calcareous forests under climate change in Central European lowlands

Autorzy:

Vancura, K.
Simkova, M.
Vacek, Z.
Vacek, S.
Gallo, J.
Simunek, V.
Podrazsky, V.
Stefancik, I.
Hajek, V.
Prokupkova, A.
Kralicek, I.

Powiązania:

https://bibliotekanauki.pl/articles/2130171.pdf

Data publikacji:

2022

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

hornbeam-oak groves
beech forests
stand structure
diversity
radial growth
Czech Republic

Opis:

Mixed lowland forests reserved for natural succession are sparse in the Czech Republic. However, their development provides essential insights into the natural processes of these forests and recommendations for forest management in a changing climate. The research describes the dynamics, productivity, structure, diversity, dead wood, and radial growth of hornbeam-oak groves and calcareous beech-dominated forests in the Karlštejn National Nature Reserve (Czechia) based on inventory in 2002, 2008, 2014 and 2020. The objective was to evaluate changes in differently managed stands (high forest, coppice with standards, and coppice) after leaving the stands to spontaneous development in 2004. The tree density increased by 2–10% from 2002 to 2014 and decreased by 6–18% in 2020. In the high forest, an increase in the stand volume was observed during the whole period, while in the coppice with standards and coppice, only until 2014. The stand volume ranged from 190 (coppice) to 630 (high forest) m³ ha−1 in 2020 and increased by an average of 28% over 18 years. Overall diversity of tree layer showed an uneven structure in the high forest and a substantially diverse structure in the other variants. The deadwood volume has been steadily increasing (18–35 m³ ha−1 in 2020), accumulating an average of 1 m³ ha−1 yr−1. A lack of precipitation and high temperatures from June to August were the main limiting factors of the radial growth of tree species, while the number of negative pointer years has increased in the last decade. European beech (Fagus sylvatica L.) was the most sensitive tree species to climate compared to the resilient European ash (Fraxinus excelsior L.). The lowest fluctuations in the diameter increment were recorded in Norway maple (Acer platanoides L.) and the highest in beech in the temperature cycles of 7–15 years. Over the last 20 years, sessile oak [Quercus petraea (Matt.) Liebl.] showed an increase in radial growth by 7%, while other tree species reported a decrease with a maximum in beech (by −38%). The forest stands managed as high forest, characterized by a higher production potential and lower diversity, had slower dynamics when compared to coppice with standards and coppice.

Źródło:

Dendrobiology; 2022, 87; 79-100
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 49.

Tytuł:

Cactus and Holm Oak Acorn for Efficient Textile Wastewater Treatment by Coagulation-Flocculation Process Optimization Using Box-Benhken Design

Autorzy:

Adachi, Abderrazzak
Soujoud, Radouane
El Ouadrhiri, Faiçal
Tarik, Moubchir
Hmamou, Anouar
Eloutassi, Noureddine
Lahkimi, Amal

Powiązania:

https://bibliotekanauki.pl/articles/24202904.pdf

Data publikacji:

2023

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

coagulation-flocculation
textile wastewater
response surface methodology
decolorization
cactus
holm oak acorn

Opis:

In this study, the effectiveness of using natural bio-coagulants and bio-flocculants to treat textile wastewater through the coagulation-flocculation method was examined. These bio-based agents have several advantages over chemical agents, including biodegradability, natural abundance, low toxicity, and low cost. A bio-coagulant (holm oak acorn (HOA)) and a bio-flocculant (cactus juice) were used to investigate the capacity for turbidity removal and decolorization of textile wastewater. The UV spectrophotometer was used to characterize the discharges before and after treatment, and the chemical oxygen demand (COD) and biological oxygen demand (BOD5) levels were calculated. Box-Behnken design (BBD) coupled with response surface methodology (RSM) were utilized to optimize the process and reduce turbidity and decolorization in textile wastewater. The obtained results show that under the optimal conditions (0.5 g•L-1 of HOA, 15 mL•L-1 of cactus juice, and a pH of 7), decolorization and turbidity removal were achieved at 69% and 90%, respectively. This study demonstrates the potential of using bio-coagulants and bio-flocculants in the treatment of textile wastewater.

Źródło:

Journal of Ecological Engineering; 2023, 24, 6; 315--328
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 50.

Tytuł:

Oak (Quercus spp.) response to climate differs more among sites than among species in central Czech Republic

Autorzy:

Rybnicek, M.
Cermak, P.
Prokop, O.
Zid, T.
Trnka, M.
Kolar, T.

Powiązania:

https://bibliotekanauki.pl/articles/41078.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

oak
Quercus
plant response
climatic parameter
precipitation
temperature
tree ring
Czech Republic

Opis:

Climatic parameters are the main environmental factors affecting tree growth. The main aim of the presented study was to determine whether different oak species growing under contrasting environmental conditions show different sensitivity to climatic parameters. Four oak stands with Quercus robur, Quercus petraea, Quercus polycarpa and Quercus dalechampii growing in the same area were evaluated. Standard dendrochronological methods were used for sample preparation, ring width measurements, cross-dating, chronology development, and the assessment of growth-climate response patterns. Although the species grew under different environmental conditions, their local tree-ring chronologies are highly correlated. The radial growth responses to climatic parameters differ slightly, but the response depends more on local site conditions than on the oak species. At the same time, the strongest correlations between radial growth and climatic parameters were identical among species and sites. The amount of water available in the soil was the main climate-dependent factor limiting radial growth. Approximately since the 1990s, the distribution of rainfalls within the growing season has changed at the expense of spring precipitation. The significance of relative soil moisture content during spring for oak growth increased and the significance of summer values decreased.

Źródło:

Dendrobiology; 2016, 75
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 51.

Tytuł:

Effects of fungi isolated from Quercus robur roots on growth of oak seedlings

Autorzy:

Kwasna, H.
Szewczyk, W.

Powiązania:

https://bibliotekanauki.pl/articles/41173.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

growth inhibition
fungi
endophyte
isolation
Quercus robur
root
plant growth
oak
seedling

Opis:

Effects of 62 isolates (of 41 taxa) of fungi on growth of 1-year-old oak (Quercus robur) seedlings were studied in an inoculation experiment. The fungi were isolated from roots of 80–96-year-old Q. robur that had been subjected to periodic flooding and had symptoms of oak decline. The fungal genera included Alternaria, Aspergillus, Calonectria, Chaetomium, Cladosporium, Clonostachys, Corynespora, Cylindrocarpon, Dicyma, Geotrichum, Ilyonectria, Isaria, Metarhizium, Oidiodendron, Ophiostoma, Pezicula, Phialocephala, Phialophora, Pyrenochaeta, Sporendocladia, Sporothrix, Thelonectria, Trichoderma and Trimmatostroma. Mycelial colonies of fungi growing in potato-dextrose broth were used for soil inoculation. Plant growth was assessed 2 years after inoculation, when the plants were 3 years old. Stem lengths, and dry weights of stems, roots and leaves were measured. Stem growth was inhibited by 31 isolates (50%) and root growth by 12 isolates (19%). Stem growth was stimulated by two isolates (3%) and root growth by 17 isolates (27%). The overall ratio of inhibitors to stimulants was 2.1. The proportion of taxa that inhibited stem growth was 16 times greater than that which promoted stem growth. The proportion of taxa that promoted root growth was only 1.5 times greater than that which inhibited root growth. The structure of the fungal communities in periodically flooded oak forests suggests that they are more likely to inhibit than to promote vigour in oaks.

Źródło:

Dendrobiology; 2016, 75
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 52.

Tytuł:

Charakterystyka lasu grądowego z jodłą w rezerwacie „Jamno”
Characteristic of oak-hornbeam forest with silver fir in "Jamno" nature reserve

Autorzy:

Woziwoda, Beata
Pawicka, Katarzyna
Wolski, Grzegorz J.

Powiązania:

https://bibliotekanauki.pl/articles/510440.pdf

Data publikacji:

2012

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

oak-hornbeam forest
silver fir
Jamno
nature reserve
las grądowy
jodła
rezerwat

Opis:

The “Jamno” nature reserve was established to protect the forest community with European silver fir Abies alba Mill. on the northern border of natural occurrence of this tree species in Poland. The results of current phytosociological studies (done in 2011) show that the oak-hornbeam forest – Tilio-Carpinetum calamagrostietosum association with Abies alba, exist within reserve. The present structure and species composition of studied community is determined by spontaneous changes of tree stand. The different proportion of silver fir in shrub and tree stand layers indicate the dynamic changes within this species population.

Źródło:

Biuletyn Szadkowski; 2012, 12; 127-143
1643-0700

Pojawia się w:

Biuletyn Szadkowski

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 53.

Tytuł:

Testing of the fatigue strength along wood fibres at different moisture contents

Autorzy:

Dobrowolska, Ewa
Niedbała, Mateusz
Tabaczyński, Daniel

Powiązania:

https://bibliotekanauki.pl/articles/2154060.pdf

Data publikacji:

2021

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

fatigue strength
moisture contents
simplified method for testing
oak
birch
Norway spruce

Opis:

Testing of the fatigue strength along wood fibres at different moisture contents. The paper determines the effect of wood moisture content on the fatigue strength in compression along fibres. The method of determining the maximum stress at the proportional limit was used for the measurements. Fatigue strength was investigated for three wood species: pedunculate oak (Quercus robur L.), bearded birch (Betula pendula Roth.) and Norway spruce (Picea abies L.), with two moisture contents: close to the absolutely dry state and above the fibre saturation point. The ratio of fatigue strength to short term strength depends on moisture content and is similar for birch (70.3% in the dry state and 72.1% in the wet state), for oak (67.4% and 69.5% in both states) and for spruce (66.6% in the dry state and 68.1% in the wet state). The moisture content of the wood clearly influences the fatigue strength of the wood. On average, the fatigue strength of wood with moisture contents above the fibre saturation point constitutes about 0.20 of the fatigue strength of wood with moisture contents close to 0%. This tendency was found regardless of the tested species. The simplified method for testing fatigue strength at the limit of proportionality has shown its limited usefulness, requiring further analysis and comparison with other methods in order to be thoroughly tested and possibly improved.
Badanie wytrzymałości zmęczeniowej wzdłuż włókien drewna przy różnej wilgotności. W pracy określono wpływ wilgotności drewna na wytrzymałość zmęczeniową przy ściskaniu wzdłuż włókien. Do pomiarów wykorzystano metodę wyznaczania maksymalnego naprężenia na granicy proporcjonalności. Wytrzymałość zmęczeniową zbadano dla trzech gatunków drewna: dębu szypułkowego (Quercus robur L.), brzozy brodawkowatej (Betula pendula Roth.) i świerka pospolitego (Picea abies L.), o dwóch wilgotnościach: zbliżonej do stanu absolutnie suchego i powyżej punkt nasycenia włókien. Stosunek wytrzymałości zmęczeniowej do wytrzymałości chwilowej zależy od zawartości wilgoci i jest podobny dla brzozy (70,3% w stanie suchym i 72,1% w stanie mokrym), dębu (67,4% i 69,5% w obu stanach) oraz świerka (66,6 % w stanie suchym i 68,1% w stanie mokrym). Zawartość wilgoci w drewnie wyraźnie wpływa na wielkość wytrzymałości zmęczeniowej drewna. Średnio wytrzymałość zmęczeniowa drewna o wilgotności powyżej punktu nasycenia włókien stanowi 0,20 wytrzymałości drewna o wilgotności bliskiej 0%. Tendencję tę stwierdzono niezależnie od badanego gatunku. Uproszczona metoda badania wytrzymałości zmęczeniowej na granicy proporcjonalności wykazała swoją ograniczoną przydatność, wymagającą dalszej analizy i porównania z innymi metodami w celu dokładnego przetestowania i ewentualnego udoskonalenia.

Źródło:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2021, 115; 45--54
1898-5912

Pojawia się w:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 54.

Tytuł:

An influence of contemporary oil coatings on the aesthetical properties and abrasion resistance of oak wood parquets

Autorzy:

Ślusarczyk, Karol
Różańska, Anna

Powiązania:

https://bibliotekanauki.pl/articles/2200146.pdf

Data publikacji:

2020

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

oak wood
resistance
properties
single-ingredient oil
two-ingredient oil
wax oil

Opis:

An influence of contemporary oil coatings on the aesthetical properties and abrasion resistance of oak wood parquets. The article analyses the influence of oil coatings on the colour, gloss, and abrasion resistance of parquets made of oak wood. Popular oil coatings of the same brand were compared: two-ingredient oil, single-ingredient oil and wax oil. A comparison of properties of several different kinds of oil manufactured by the same brand reveals that they do have influence on the changes in wood properties, when comparing to wood without finish. Single-ingredient and two-ingredient oil darken the colour, increase in red colour and in yellow colour to a similar extent, while wax oil darkens it and increase the share of red and yellow colour less. As to gloss, there are no statistically significant differences between the influence of the different oils. Two-ingredient oil practically does not change resistance to abrasion at all, while single-ingredient oil and wax oil reduce the rate of abrasion, and wax oil reduces abrasion 4 times less efficiently than single-ingredient oil.
Wpływ współczesnych powłok olejowych na właściwości estetyczne i ścieralność posadzek z drewna dębowego. Porównanie właściwości poszczególnych rodzajów oleju, produkowanych przez tą samą markę, dowodzi różnego ich wpływu na zmiany właściwości drewna wykończonego w porównaniu do drewna niewykończonego. Olej jedno i dwuskładnikowy przyciemniają barwę oraz zwiększają udział barwy czerwonej i żółtej w podobnym stopniu, a olejowosk w stosunku do w mniejszym stopniu. W przypadku połysku nie ma ewidentnie istotnych statystycznie różnic pomiędzy wpływem poszczególnych olejów. Olej dwuskładnikowy praktycznie nie ma wpływu na zmianę ścieralności, a olej jednoskładnikowy i olejowosk zmniejszają ścieralność, lecz w stosunku do oleju jednoskładnikowego olejowosk zmniejsza ścieralność czterokrotnie mniej.

Źródło:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2020, 111; 83--93
1898-5912

Pojawia się w:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 55.

Tytuł:

Wstępne badania nad zmiennością izoenzymową dębów w doświadczeniu proweniencyjnym w Nadleśnictwie Milicz
Preliminary research on izoenzyme variability of oaks in the provenance experiment in the Milicz Forest District

Autorzy:

Zwaduch, P.
Lewandowski, A.

Powiązania:

https://bibliotekanauki.pl/articles/1012982.pdf

Data publikacji:

2008

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

zroznicowanie genetyczne
dab bezszypulkowy
zmiennosc genetyczna
proweniencje
izoenzymy
Quercus petraea
Nadlesnictwo Milicz
Quercus robur
lesnictwo
dab szypulkowy
drzewa lesne
pedunculate oak
sessile oak
provenance
genetic variation
izoenzyme
poland

Opis:

The studies were based on the material collected in the provenance experiment established in the territory of the Milicz Forest District where 78 pedunculate (Quercus robur L.) and sessile oak (Quercus petraea [Matt.] Liebl.) provenances from all over the country were planted in 5 replications. The izoenzyme analyses took in dormant buds from 300 trees of randomly selected 5 pedunculate oak and 5 sessile oak provenances. Variation of 6 enzymatic systems was the subject of the analysis. The studied oak populations exhibited a relatively high level of genetic variation, however, it was lower in comparison with the populations from other regions of Europe. Generally, the variation of the sessile oak was grater than of the pedunculate oak. The calculated genetic distance between the two oak species was 0.0284 and it exceeded genetic distances among the populations within the species.

Źródło:

Sylwan; 2008, 152, 10; 27-35
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 56.

Tytuł:

Chosen properties of oak wood immersed for 6 months in the Baltic Sea

Autorzy:

Fojutowski, A.
Wroblewska, H.
Kropacz, A.
Komorowicz, M.
Noskowiak, A.
Pomian, I.

Powiązania:

https://bibliotekanauki.pl/articles/29858.pdf

Data publikacji:

2011

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

chosen property
oak wood
Baltic Sea
strength
fungi
decay
chemical composition
archaeological wood

Opis:

Changes of physical and chemical properties, mass loss and susceptibility of oak wood to decay caused by Basidiomycetes fungi were assessed after wood samples had been taken out of the sea within the framework of MACHU project. Test samples of oak wood of the dimensions of 250 × 10 × 10 mm were placed in coastal waters of the Baltic Sea at the area of medieval seaport in Puck and in waters of the Gdansk Bay at the same longitude as Orłowo (near the wreck of Swedish warship Solen). The samples taken out of the sea were examined visually and described. Changes in mass of the samples, their bending strength and modulus of elasticity, compression strength along the grain, ability to decay caused by Trametes versicolor fungus, content of mineral substances and substances soluble in water, ethanol-benzene mixture and in 1-percent aqueous solution of NaOH, content of cellulose, lignin and pentosanes as well as pH of the wood were investigated. The properties of samples taken out of the sea after 6 months of immersion were compared with the properties of control twin samples of oak wood which had not been immersed. The results obtained so far indicate that noticeable, measurable changes in oak wood immersed in sea occur already in half a year since immersion, so observation of them may be useful for protection and monitoring of underwater archaeological objects.

Źródło:

Folia Forestalia Polonica. Series B - Drzewnictwo; 2011, 42
0071-6685

Pojawia się w:

Folia Forestalia Polonica. Series B - Drzewnictwo

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 57.

Tytuł:

Effect of Tree Shelters and Regeneration Method on Survival and Growth of Cork Oak Plantations in the Maamora Forest, Morocco

Autorzy:

El Alami, Sanae Lahlimi
El Aboudi, Ahmed
El Antry, Salwa
El Mnouar, El Ayyachi
Dallahi, Youssef
Rabhi, Ameur

Powiązania:

https://bibliotekanauki.pl/articles/27323832.pdf

Data publikacji:

2023

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

adaptation to climate change
arid climate
cork oak
forest regeneration
Morocco
tree shelter

Opis:

Forests are under intense human pressure, hindering their restoration. A potential solution to regeneration problems is the adoption of tree shelters, which have demonstrated protective benefits in the early establishment of forest plantations. A 9-year study was conducted in the Maamora forest (Morocco) to evaluate the effects of tube shelters and regeneration methods (direct seeding and seedling) on the growth and survival of cork oak (Quercus suber) plantations. A split-plot design was developed with three replicates of 36 plants for each of the four shelter treatments, including T0 (control), T1 (Tubex 1.20 m), T2 (Tubex 1.50 m), and T3 (Tubex 1.80 m) for a total of 964 plants, where periodic inventories were conducted to assess plant survival and growth. Our results show regeneration methods and shelters significantly influenced the survival of cork oak. Direct-seeded plants were more successful than those from seedlings, presenting survival rates of up to 97%. Despite a minimal shelter effect at the beginning, their positive influence was strong later on. Only plants installed with the 1.20 m shelter had an overall success rate of over 50%. Regeneration method had a strong influence on height and diameter growth, with seedling units showing taller plants initially, which shifted to direct-seeded plants in subsequent years. Conversely, the effect of shelters on growth parameters was generally non-significant. Nonetheless, sheltered trees exhibited greater height and diameter than unsheltered trees, particularly in the latter years. Sheltered plants showed an overall faster rate of vertical growth, while unsheltered plants showed faster radial growth.

Źródło:

Journal of Ecological Engineering; 2023, 24, 7; 360--374
2299-8993

Pojawia się w:

Journal of Ecological Engineering

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 58.

Tytuł:

The proposal of a new provisional border of range of the acidophilous oak forest Calamagrostio arundinaceae-Quercetum petraeae Hartm. 1934 Scam. et Pass. 1959 in central Poland

Autorzy:

Zaniewski, Piotr T.
Ciurzycki, Wojciech
Zaniewska, Ewa

Powiązania:

https://bibliotekanauki.pl/articles/2041024.pdf

Data publikacji:

2021

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

forest association range border
Quercetea-robori petraeae
sessile oak
Mazowsze
Kujawy
Łódź
Wielkopolska

Opis:

The range of acidophilous oak forest from Quercetea robori-petraeae Br-Bl. et Tx. ex Oberd. 1957 in Central Europe depends largely on the syntaxonomical concept used and is still provisional. The most continental association from this class occurring in Poland is Calamagrostio arundinaceae-Quercetum petraeae Hartm. 1934 Scam. et Pass. 1959. It is present in western and central Poland, but its eastern boundary is not well known. The aims of the study were to survey and document new patches of Calamagrostio-Quercetum in central Poland, to check the internal variation of the association and to summary the known distribution of it in lowlands of central-western and central Poland. 23 phytosociological relevés were made within new stands together with soil sampling. New relevé data was subjected to the numerical Wards classification together with acidophilous oak forests datasets from western Poland and oak-pine forests ones from eastern part of the Country. The new dataset was similar to Calamagrostio-Quercetum. Three subassociations were distinguished. Soil parameters and oak site index did not differ from acidophilous oak forest stands from other parts of Poland. The provisional range of Calamagrostio-Quercetum in central Poland was proposed to be moved by circa 60–90 km to the north-east (approximately as far as the Vistula river line) in order to include south-western part of Mazowsze.

Źródło:

Folia Forestalia Polonica. Series A . Forestry; 2021, 63, 3; 243-259
0071-6677

Pojawia się w:

Folia Forestalia Polonica. Series A . Forestry

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 59.

Tytuł:

Inwentaryzacja zasobów drzewnych w urządzaniu lasu w Polsce
Inventory of timber resources in forest management in Poland

Autorzy:

Jaszczak, R.

Powiązania:

https://bibliotekanauki.pl/articles/1015664.pdf

Data publikacji:

2008

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

inwentaryzacja
Polska
zasoby drzewne
lesnictwo
urzadzanie lasu
quercus robur
pedunculate oak
variability
heritability

Opis:

The paper presents the comparison of heritability of height and diameter at breast height (dbh) in 7−11− year−old pedunculate oak trees from 5 provenances and 55 families. The provenance heritability for five successive years was high: 0.19−0.80 for height and 0.59−0.87 for dbh. Family heritability was moderate ranging 0.39−0.52 for height and 0.34−0.49 for dbh, while individual−tree heritability values was the lowest equalling 0.08−0.15 for height and 0.06−0.14 for dbh.

Źródło:

Sylwan; 2008, 152, 05; 14-25
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 60.

Tytuł:

Najgrubsze dęby szypułkowe (Quercus robur L.) województwa zachodniopomorskiego
The biggest penduculate oaks (Quercus robur L.) of West Pomeranian voivodeship

Autorzy:

Jankowski, Krzysztof
Siwik, Daria

Powiązania:

https://bibliotekanauki.pl/articles/401566.pdf

Data publikacji:

2020

Wydawca:

Polskie Towarzystwo Inżynierii Ekologicznej

Tematy:

dąb szypułkowy
pomnik przyrody
województwo zachodniopomorskie
penduculate oak
natural monument
West Pomeranian voivodeship

Opis:

Dęby szypułkowe Quercus robur L. stanowią w Polsce najokazalsze drzewa, występujące w zasięgu naturalnym. Według różnych źródeł obwód pni najgrubszych drzew mierzony na wysokości pierśnicy przekracza 1000 cm. Dęby przedstawiane były często w literaturze naukowej i popularnonaukowej przede wszystkim ze względu na swoje rozmiary, ale także wartość kulturową i historyczną. Opracowania tego typu najczęściej dotyczyły najbardziej okazałych egzemplarzy tego gatunku w skali kraju. W odniesieniu do Pomorza Zachodniego brak w literaturze naukowej danych dotyczących największych okazów z województwa zachodniopomorskiego, które jest naturalnym miejscem występowania gatunku. Badania przeprowadzone w latach 2017-2018 stanowią próbę usystematyzowania wiedzy w tym zakresie w skali regionu i zostały przeprowadzone na grupie drzew najgrubszych pod względem obwodu pierśnicowego. Analiza objęła szczegółowy opis parametrów dendrologicznych oraz ocenę stanu zdrowotnego według skal stosowanych we współczesnej dendrologii. Uwzględniono również informacje zawarte w źródłach historycznych. Badaniami objęto 12 egzemplarzy dębu szypułkowego Quercus robur L.
Pedunculate oaks of Quercus robur L. are the most magnificent trees in Poland, which occur in their natural range. According to various sources, the circumference of the trunks of the thickest trees measured at breast height may exceed 1000 cm. Oaks of impressive sizes were often presented in the scientific and popular science literature primarily due to their size, but also cultural and historical value. Studies of this type most often referred to the most impressive specimen of this species on the national scale. In reference to Western Pomerania, there is no scientific study on the largest specimen in the West Pomeranian Voivodeship, which is a natural occurrence of this species. Research carried out in 2017-2018 is an attempt to systematize knowledge in this area on the regional scale and has been carried out on a group of trees that are the most impressive in terms of the circumference measured at breast height. The analysis included a detailed description of dendrological parameters and an assessment of the health status according to the scales used in modern dendrology. Information from historical sources was also included. The study covered 12 copies of pedunculate oak Quercus robur L.

Źródło:

Inżynieria Ekologiczna; 2020, 21, 2; 35-47
2081-139X
2392-0629

Pojawia się w:

Inżynieria Ekologiczna

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 61.

Tytuł:

Utilization of the invasive plant Impatiens parviflora DC. by the snail Columella edentula Draparnaud in oak-hornbeam forests

Autorzy:

Piskorz, R
Urbanska, M.

Powiązania:

https://bibliotekanauki.pl/articles/59016.pdf

Data publikacji:

2007

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

balsam
invasive plant
Impatiens parviflora
interaction
botany
Columella edentula
snail
oak-hornbeam forest

Opis:

This study investigated the extend to which the snail Columella edentula is more strongly associated with the small balsam Impatiens parviflora than with other plants in the herb layer of an oak-hornbeam forest, and to interpret the character of the interaction Impatiens parviflora - Columella edentula. Numbers of C. edentula and rates of colonization were compared on various plant species under natural and laboratory conditions. Seasonal variation in snail abundance on I. parviflora was observed on permanent plots. The leaf injuries caused by C. edentula were localized in respect of the morphological and anatomical structure of leaves. The results show that I. parviflora is one of the plant species of the herb layer that are most abundantly colonized by this snail in oak-hornbeam forest. Snail finds a plant particularly suitable as a place for resting. The most favoured attachment site is on the underside of the leaf, along the midrib, which provides the highest and relatively stable humidity, as well as protection from direct sunlight and predators. I. parviflora is also a food for the snails, but they do not eat these fragments of leaves where calcium carbonate is accumulated.

Źródło:

Acta Societatis Botanicorum Poloniae; 2007, 76, 1
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 62.

Tytuł:

Regeneration-degeneration processes in the inland dune forests in protected areas of central Poland (Kampinos National Park)

Autorzy:

Kowalska, Anna
Kołaczkowska, Ewa

Powiązania:

https://bibliotekanauki.pl/articles/1035996.pdf

Data publikacji:

2015

Wydawca:

Uniwersytet Warszawski. Wydział Geografii i Studiów Regionalnych

Tematy:

Pine forests
mixed oak-pine forests
regeneration
inland dunes
Kampinos National Park
central Poland

Opis:

The aim of our study was to quantify the differences in the regeneration-degeneration processes in pine and mixed oak-pine forest habitats in the Kampinos Forest (central Poland). We investigated whether the regeneration rate depends on habitat type, whether there is a relationship between the bilberry (Vaccinium myrtillus) cover and the degree of community deformation, and which habitat type has been most invaded by alien plant species. Our results indicate that the constant loss of pine forest habitats, which has been observed since the 1970s, is continuing. The less deformed communities generally have more bilberry coverage, the stands in pine forest habitats are older and less deformed, and the stands in mixed oak-pine forest habitats are more susceptible to the spread of alien species, but are able to regenerate faster after a disturbance. These results are in line with observations from other parts of Poland and other European countries.

Źródło:

Miscellanea Geographica. Regional Studies on Development; 2015, 19, 4; 56-63
0867-6046
2084-6118

Pojawia się w:

Miscellanea Geographica. Regional Studies on Development

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 63.

Tytuł:

Biomasa i roczna produkcja drzewostanów dębowych Puszczy Niepołomickiej
Biomass and annual production of oak stands in the Niepolomicka Forest

Autorzy:

Orzeł, S.
Ochał, W.
Forgiel, M.
Socha, J.

Powiązania:

https://bibliotekanauki.pl/articles/1018550.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

drzewostany debowe
Puszcza Niepolomicka
lesnictwo
biomasa
produkcja biomasy
oak stand
biomass
annual biomass production

Opis:

The paper presents the results of the study on biomass volume and annual production of oak stands in the Niepołomicka Forest. The analysis was based on the material collected from 59 circular sample plots where oak accounted for more than 50% of the volume of the tree layer. In the total biomass of the tree layer amounting to about 225.3 t·ha–1, the biomass of the shrub layer (underbrush) is about 2.3 t·ha–1. In the tree layer biomass (about 223 t·ha–1), wood makes up on average 86.4%, bark – 12% and assimilatory apparatus – 1.6%. The share of wood in the biomass increases with the increase of stand age, while that of bark and assimilatory apparatus declines. The proportion of these elements in the dry mass production (on average 9.8 t·ha–1·year–1) is somewhat different. Almost 35% of its volume is assimilatory apparatus whose share increases with stand age. The increment of bark is about 9%, while of wood it is 56% of the annual biomass production of the stands under analysis and slightly decreases with stand age.

Źródło:

Sylwan; 2006, 150, 05; 30-43
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 64.

Tytuł:

The influence of selected factors on the strenght of wood adhesive joints

Autorzy:

Rudawska, Anna
Maziarz, Marek
Šajgalík, Michał
Valášek, Petr
Zlamal, Tomas
Iasnii, Volodymyr

Powiązania:

https://bibliotekanauki.pl/articles/102152.pdf

Data publikacji:

2018

Wydawca:

Stowarzyszenie Inżynierów i Techników Mechaników Polskich

Tematy:

adhesive joint
strength
pine wood
oak wood
połączenie klejowe
siła
drewno sosnowe
drewno dębowe

Opis:

This paper examines the effect of selected factors on the wood bonded joint strength. The structural factor under scrutiny was the geometry of the surface area; however, other major dimensions of adherends were compared as well. The tests were performed on 6 joint types: butt, v-shaped, interlocking, scarf, tongue & groove, and single lap joints, which were formed on two types of substrate materials – pine and oak wood, and adhesively bonded. The joints were bonded with Prefere 6312 wood adhesive and Loctite 3430 two-component epoxy adhesive. Strength testing of the joints was performed on Zwick/Roell Z150 material testing machine, according to DIN EN 1465 standard. The results obtained from the tests indicate that bonded joints of oak wood exhibit higher strength properties than those of pine wood adherends, which was confirmed in nearly all strength tests.

Źródło:

Advances in Science and Technology. Research Journal; 2018, 12, 3; 47-54
2299-8624

Pojawia się w:

Advances in Science and Technology. Research Journal

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 65.

Tytuł:

Probing measurements of the Meyer hardness index of radial, tangential and cross section of various types of wood

Autorzy:

Koczan, Grzegorz

Powiązania:

https://bibliotekanauki.pl/articles/24072400.pdf

Data publikacji:

2023

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

beech
birch
oak
pine
merbau
tangential section
radial section
cross section
Meyer hardness index

Opis:

The Meyer index is a power exponent appearing in Meyer hardness power law, which describes the dependence of the indenting force on the diameter of the indentation caused by the ball (or alternatively a cylinder). A perfectly plastic material should have a Meyer hardness index of 2 and a perfectly elastic material of 3. Previous research by the author and co-workers indicated that the Meyer index of beech wood is 2.5 and for metals aluminum 2.25, copper 2.0. This gave rise to the hypothesis that the hardness index of each wood is about 2.5. It was decided to verify this hypothesis for different types of wood, different anatomical cross-sectional directions. Research on such diversity must therefore be of a probing nature. Nevertheless, these probing measurements indicate that different types of wood in given sectional planes have similar Meyer indexes, but in each section it is a different value. The measured mean value in the radial section was 2.41, in the tangential section 2.28 and in the cross section 1.98. Thus, the initial hypothesis of the value 2.5 was confirmed only for the radial section, and for the tangential and cross sections, new values of 2.25 and 2.0 were hypothesized. Only the extreme values of the Meyer indexes (on the radial and cross section) turned out to be statistically significantly different.
Pomiary sondażowe wskaźnika twardości Meyera przekroju promieniowego, stycznego i poprzecznego różnych rodzajów drewna. Wskaźnik Meyera jest to wykładnik potęgi w zależności siły wgniatającej od średnicy wcisku pochodzącego od kulki. Materiał idealnie plastyczny winien mieć wskaźnik twardości Meyera równy 2, a idealnie sprężysty wartość 3. Dotychczasowe badania autora i współpracowników wskazały, że wskaźnik Meyera drewna bukowego wynosi 2.5, aluminium 2.25, zaś miedzi 2.0. Zrodziło to przypuszczenie, że wskaźnik twardości każdego drewna wynosi około 2.5. Postanowiono zweryfikować tą hipotezę dla różnych rodzajów drewna na różnych płaszczyznach anatomicznych przekroju. Badania takiej różnorodności musiały mieć zatem charakter sondażowy. Niemniej te badania sondażowe wskazały, że różne rodzaje drewna w danych płaszczyznach przekroju mają zbliżone wskaźniki Meyera, ale w każdym przekroju jest to inna wartość. Zmierzona wartość średnia w przekroju promieniowym wyniosła 2.41, w stycznym 2.28 i poprzecznym 1.98. Zatem wyjściowa hipoteza wartości 2.5 potwierdziła się tylko dla przekroju promieniowego, zaś dla przekroju stycznego i poprzecznego powstały hipotezy nowych wartości 2.25 i 2.0. Jedynie skrajne wartości wskaźników Meyera (na przekroju promieniowym i poprzecznym) okazały się statystycznie istotnie różne.

Źródło:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2023, 121; 21--27
1898-5912

Pojawia się w:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 66.

Tytuł:

Rozdział 2. Wyniki uprawy dębu burgundzkiego Quercus cerris L. w warunkach klimatycznych środkowej Polski
Chapter 2. The results of the turkey oak Quercus cerris L. cultivation under central Poland’s climatic conditions

Autorzy:

Michałowska, Natalia

Powiązania:

https://bibliotekanauki.pl/chapters/31233537.pdf

Data publikacji:

2022

Wydawca:

Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej

Tematy:

dąb burgundzki
wprowadzenie
uprawa lasów w Polsce
Turkey oak
introduction
forest cultivation in Poland

Opis:

W poniższej pracy dokonano oceny wyników dotychczasowej uprawy dębu burgundzkiego Quercus cerris L. w warunkach klimatycznych Polski centralnej. Introdukcja gatunków obcych jest przedmiotem zainteresowania już od dawna, co zaowocowało utworzeniem licznych obszarów doświadczalnych. Jedną z instytucji specjalizujących się we wprowadzaniu gatunków obcych i ich badaniu jest Arboretum SGGW w Rogowie. Trend związany z wprowadzaniem gatunków obcych do drzewostanów jest obecnie regulowany prawnie. Z drugiej strony wprowadzenie gatunków potencjalnie pożytecznych, poprzedzone rzetelnymi badaniami, może okazać się konieczne dla różnorodności rodzimej dendroflory. Wprowadzenie jest istotne w kontekście utraty optymalnego klimatu, a co za tym idzie, zasięgu występowania niektórych gatunków lasotwórczych, takich jak świerk pospolity, sosna zwyczajna czy brzoza zwyczajna. Podstawą pracy są wyniki pomiarów i obserwacji dębów burgundzkich rosnących na leśnych działkach doświadczalnych Arboretum SGGW w Rogowie. Dąb indyczy wykazuje możliwości wzrostu w warunkach klimatycznych środkowej Polski. Ze względu na dużą odporność na niekorzystne warunki, rozszerzone pokrycie i zadowalające cechy wzrostu można było zastosować uprawy leśne. Przeprowadzenie badań na większej populacji drzew i w zmieniających się warunkach siedliskowych mogłoby stanowić podstawę do uznania dębu burgundzkiego za cenny gatunek lasotwórczy. Drugim aspektem wartym zbadania jest potencjalna użyteczność rekultywacji terenów zmienionych i poprzemysłowych.
The following work assessed the results of the previous cultivation of the Turkey oak Quercus cerris L. in the climatic conditions of central Poland. The introduction of alien species has been an object of interest for a long time, resulting in the establishment of numerous experimental areas. One of the institutions specializing in introducing alien species and their study is the Arboretum SGGW in Rogów. The trend associated with introducing alien species in forest stands is currently regulated by law. On the other hand, introducing potentially beneficial species, preceded by reliable research, may become necessary for the variety of native dendroflora. The introduction is essential in the context of the loss of climatic optimum and, as a result, the range of occurrence by some forest-forming species, such as the Norway spruce, the Scots pine, or common birch. The bases of the work are the results of measurements and observations of the Turkey oak trees growing on the experimental forestry plots of the Arboretum SGGW in Rogów. The Turkey oak shows growth opportunities in central Poland’s climatic conditions. Due to high resistance to adverse conditions, extending coverage and satisfactory growth features could apply to forest crops. Carrying out studies on a larger tree population and under changing habitat conditions could be the basis for considering the Turkey oak as a valuable forest-forming species. The second aspect worth exploring is the potential utility for the reclamation of changed and post-industrial sites.

Źródło:

Lasy przyszłości. Wyzwania współczesnego leśnictwa; 21-29
9788367185462

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 67.

Tytuł:

Rozdział 1. Skuteczność odnowienia sztucznego dębu szypułkowego Quercus robur L. na powierzchni rębni gniazdowej zupełnej (IIIa) na przykładzie leśnictwa Surażkowо w Puszczy Knyszyńskiej
Chapter 1. The effectiveness of artificial regeneration of the pedunculate oak Quercus robur L. on the surface of shelterwood cutting (IIIa) on the example of Surażkowo forest district in the Knyszyn Forest

Autorzy:

Fiłonowicz, Wojciech
Marozau, Aleh

Powiązania:

https://bibliotekanauki.pl/chapters/31233538.pdf

Data publikacji:

2022

Wydawca:

Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej

Tematy:

dąb szypułkowy
sztuczne odnowienie
wycinanie drewna osłonowego
pedunculate oak
artificial regeneration
shelterwood cutting (IIIa)

Opis:

W artykule przedstawiono wyniki i wnioski dotyczące skuteczności sztucznego odnowienia dębu szypułkowego Quercus robur L. na powierzchni zrębu drzewostanowego (IIIa) w Nadleśnictwie Surażkowo w Puszczy Knyszyńskiej, w północno-wschodniej Polsce. Określono skuteczność regeneracji w zależności od warunków środowiskowych i zabiegów pielęgnacyjnych. W sprzyjających warunkach (brak zachwaszczenia) dąb można sadzić bez przygotowania gleby lub na terenach naturalnego odnowienia grabu przy minimalnym przygotowaniu (talerze). Na granicy dębu, gatunków domieszkowych i runa leśnego konieczna jest rutynowa pielęgnacja. Stosowanie plastikowych osłon siatkowych skutecznie chroni przed szkodami wyrządzanymi przez jelenie. Jednak zbyt długie trzymanie siatki (ponad pięć lat) może spowodować nadmierną smukłość (czyli dysproporcję pomiędzy średnicą a wysokością drzewka). Aby osiągnąć zamierzony cel hodowlany, niezbędne są prawidłowe prowadzenie plantacji (uprawa, czyszczenie) oraz zabiegi ochronne.
The article presents the results and conclusions on the effectiveness of artificial regeneration of the pedunculate oak Quercus robur L. on the surface of shelterwood cutting (IIIa) in the Surażkowo Forest District in the Knyszyn Forest, northeastern Poland. The regeneration efficiency was identified depending on the environmental conditions and care treatments. Under favorable conditions (no weed infestation), the oak can be planted without soil preparation or in areas of natural regeneration of hornbeam with minimal preparation (plates). Routine care is necessary on the border between the oak, admixed species, and undergrowth. Using plastic mesh tree protectors effectively saves against any damage caused by deer. Nevertheless, keeping the mesh for too long (for over five years) may cause excessive slenderness (which is a disproportion between the diameter and the height of the tree). Proper performance of plantations сare (cultivation, cleaning) and protective measures are essential to achieve the assumed breeding goal.

Źródło:

Lasy przyszłości. Wyzwania współczesnego leśnictwa; 9-19
9788367185462

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 68.

Tytuł:

Changes in DNA methylation of embryonic axes of seeds of oak and beech during in vitro culture and cryopreservation

Autorzy:

Nuc, K.
Marszalek, M.
Pukacki, P.M.

Powiązania:

https://bibliotekanauki.pl/articles/80269.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
DNA methylation
plant growing
embryonic axis
seed
oak
beech
in vitro culture
cryopreservation

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 69.

Tytuł:

Sigmoid growth curves, a new approach to study the dynamics of the epicotyl emergence of oak

Autorzy:

Ukalska, Joanna
Jastrzębowski, Szymon

Powiązania:

https://bibliotekanauki.pl/articles/2044179.pdf

Data publikacji:

2019

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

cumulative germination
Gompertz model
growth curves
logistic model
nonlinear regression
pedunculate oak
Richards model

Opis:

Three of the most frequently used sigmoidal growth curves from the Richards family are the logistic model, Gompertz model and Richards model. They are used in the analysis of organismal growth over time in many disciplines/studies and were proposed in many parameterisations. Choosing the right parameterisation is not easy. The correct parameterisation of the model should take into account such parameters that are useful to describe the analysed growth phenomenon and are biologically relevant without additional calculations. In addition, each parameter of the model only affects one shape characteristic of each growth curve, which makes it possible to determine standard errors and confidence intervals using statistical software. Growth curves in germination dynamics studies should provide information on topics such as the length of the lag in onset of germination, the maximum germination rate and, when it occurs, the time at which 50% of seeds will germinate and the final germination proportion. In this article, we present three parameterisations of the logistic, Gompertz and Richards models and indicate two parameterisations for each model, corresponding to the abovementioned issues. Our proposition is parameterisation by taking into account the maximum absolute growth rate. Parameterisations indicated as useful for germination dynamics are characterised by the fact that each parameter has the same meaning in every model, so its estimates can be compared directly amongst the models. We also discussed the goodness-of-fit measures for nonlinear models and in particular measures of nonlinear behaviour of a model’s individual parameters as well as overall measures of nonlinearity. All described models were used to study the dynamics of the epicotyl emergence of pedunculate oak. After checking the close-to-linear behaviour of the studied model parameters and by taking into account the criteria of model selection (AICc of each growth curve and the residual variance [RV]), the best model describing the dynamics of epicotyl appearance of pedunculate oak was the Richards curve.

Źródło:

Folia Forestalia Polonica. Series A . Forestry; 2019, 61, 1; 30-41
0071-6677

Pojawia się w:

Folia Forestalia Polonica. Series A . Forestry

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 70.

Tytuł:

The negative impact of intentionally introduced Quercus rubra L. on a forest community

Autorzy:

Woziwoda, B.
Kopec, D.
Witkowski, J.

Powiązania:

https://bibliotekanauki.pl/articles/59182.pdf

Data publikacji:

2014

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

negative impact
introduction
Quercus rubra
red oak
biodiversity
commercial forestry
ecosystem service
forest community

Opis:

Some alien woody species used in commercial forestry become invasive and, as invaders, cause major problems in natural and semi-natural ecosystems. However, the deliberate introduction of aliens can bring unintended negative changes also within areas of their cultivation. This paper presents the effects of the intentional introduction of the North-American Quercus rubra in European mixed Scots pine-Pedunculate oak forests (POFs): Querco roboris-Pinetum (W. Mat. 1981) J. Mat. 1988. Phytosociological data from field research combined with GIS data analysis of the current distribution of Northern Red oak in the studied habitat were used to determine the composition and structure of forest communities in plots with and without Q. rubra participation. The results show that Q. rubra significantly reduces native species richness and abundance, both in old-growth and in secondary (post-agricultural) forests. Not one resident vascular plant benefits from the introduction of Northern Red oak and only a few are able to tolerate its co-occurrence. The natural restocking of all native woody species is also strongly limited by this alien tree. The introduction of Northern Red oak significantly limits the environmental functions of the POF ecosystem and weakens its economic and social aspects. However, its further cultivation is justified from an economic point of view, as the essential function of the studied forests is commercial timber production, and the introduction of this fast growing alien tree supports the provisioning ecosystem services. A clear description of the level of trade-off between the accepted negative and positive effects of the introduction of Q. rubra on forest ecosystem services requires further interdisciplinary studies.

Źródło:

Acta Societatis Botanicorum Poloniae; 2014, 83, 1
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 71.

Tytuł:

Ocena stopnia uszkodzenia liści drzewostanów dębowych Nadleśnictwa Wołów dotkniętych klęską powodzi
Assessment of leaf damage in oak stands in the flood-affected Wolow Forest Division

Autorzy:

Kuzmiński, R.
Szewczyk, W.
Korczyński, I.
Łakomy, P.

Powiązania:

https://bibliotekanauki.pl/articles/1311485.pdf

Data publikacji:

2015

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

lesnictwo
tereny pokleskowe
tereny popowodziowe
drzewostany debowe
drzewa lesne
dab
Quercus
defoliacja
liscie
uszkodzenia lisci
szkodniki roslin
owady
Nadlesnictwo Wolow
flood
defoliation
Wołów Forest Division
oak die-back
pest insects
oak stands

Opis:

This study examines the effect of flood on oak stands in the Wołów Forest Division by assessing the loss of leaf area due to insect feeding as determined in laboratory analyses of samples collected from standing trees. We compared stands, in which water stagnated for at least one month and stands with no water stagnation. It was found that the mean damage to the carbon assimilating organs of stands with stagnating water was lowered by approximately 6% compared to stands that were not affected by flood. Thus, no definite effect of flood contributing to losses of carbon assimilating organs in oak trees could be shown.

Źródło:

Leśne Prace Badawcze; 2015, 76, 3; 297-303
1732-9442
2082-8926

Pojawia się w:

Leśne Prace Badawcze

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 72.

Tytuł:

Wpływ wielkości nasion i głębokości siewu na wschody i wysokość siewek dębów (Quercus robur L. i Q. petraea (Mat.) Liebl.)
Effect of acorn size and sowing depth on Quercus robur and Q. petraea seedling emergence and height

Autorzy:

Tylkowski, T.
Bujarska-Borkowska, B.

Powiązania:

https://bibliotekanauki.pl/articles/973800.pdf

Data publikacji:

2011

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

masa 1000 nasion
nasiona
Quercus petraea
Quercus robur
siew jesienny
siewki
wschody
dąb bezszypułkowy
dab szypułkowy
drzewa leśne
głębokość siewu
leśnictwo
wysokość roślin
żołędzie
pedunculate oak
sessile oak
1000 seeds mass
autumn sowing

Opis:

The aim of investigations was to establish the effect of sowing depth in the nursery on seedling quality and emergence, depending on weight of Quercus robur and Q. petraea acorns. Carried out researches had a preliminary character because seeds were collected separately only from 5 trees. We found no significant effect on seedling quality and emergence for Q. robur with the largest weight of acorns (mass of 1000 seeds equaling 6660 g) sown at the depth of 9 cm. Such relations had not occurred in Q. petraea. Sowing at the depth of 3−9 cm in the nursery had no significant effect on seedling height within each investigated seed lot. At the greater sowing depths, the dry weight of seedling roots was lower, while dry weight of shoots was higher.

Źródło:

Sylwan; 2011, 155, 03; 159-170
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 73.

Tytuł:

The effect of oak-hornbeam diversity on flowering and fruiting of Impatiens parviflora DC.
Wplyw zroznicowania gradu na kwitnienie i owocowanie Impatiens parviflora DC.

Autorzy:

Piskorz, R.

Powiązania:

https://bibliotekanauki.pl/articles/878536.pdf

Data publikacji:

2005

Wydawca:

Uniwersytet Przyrodniczy w Poznaniu

Tematy:

Impatiens parviflora
Central Europe
flowering
botany
Europe
oak-hornbeam forest
fruiting
annual plant
phenotypic plasticity

Źródło:

Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana; 2005, 09
1896-1908

Pojawia się w:

Roczniki Akademii Rolniczej w Poznaniu. Botanika-Steciana

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 74.

Tytuł:

Dynamika wiosennych zjawisk fenologicznych w drzewostanie dębu bezszypułkowego (Quercus petraea [Matt.] Liebl.)
Dynamics of the spring phenological phenomena in the sessile oak (Quercus petraea [Matt.] Liebl.) stand

Autorzy:

Będkowski, K.

Powiązania:

https://bibliotekanauki.pl/articles/985858.pdf

Data publikacji:

2018

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
fenologia
drzewostany debowe
dab bezszypulkowy
Quercus petraea
wiosna
rozwoj fenologiczny
sessile oak
spring phenology

Opis:

Numerous studies show that in the pedunculate and sessile oaks there are two forms that differ in terms of the spring development of leaves – one can distinguish early and late variants. Acceleration of leaves development gives the particular tree a chance to gain advantage over others, as well as enables to avoid herbivory caused by insects. However, it is fraught with the risk of damage caused by the late frosts. In turn, trees that develop leaves later can avoid losses, but they have to face the shortened growing season. The article presents the results of repeated observations of the spring development of sessile oak trees in about 90−year old stand in central Poland (19.920365° E, 51.837381° N). The trees were observed every week and classified into one of six classes of leaves development – from the absence of bud burst symptoms to the fully−developed leaf. It was found that over time, the share of trees was gradually increasing at higher and higher stages of development, while at the end of the observation period the rate of development of trees was very high. Importantly, at each stage of development, the trees emerged, which proceeded to much faster development than previously, and their share was increasing over time, as shown in the elaborated model of stand development.

Źródło:

Sylwan; 2018, 162, 12; 998-1006
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 75.

Tytuł:

O Baublisie raz jeszcze...
About Baublis once again...

Autorzy:

Tomusiak, R.
Zarzyński, P.

Powiązania:

https://bibliotekanauki.pl/articles/1009653.pdf

Data publikacji:

2009

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

pomniki przyrody
dab Baublis
historia
Litwa
lesnictwo
drzewa lesne
'baublis'
common oak
monumental tree
lithuania

Opis:

This paper is a kind of addition to four other articles about famous Lithuanian oak−tree called 'Baublis' published in Sylwan, especially those from 1827 and 2002. The first one, written by Dionizy Paszkiewicz was a description of its cut down in 1812. The latter was a scientific estimation of 'Baublis'es' main parameters (trunk circumference, height, volume, age, etc.) basing on facts from the previous article. However, some new data about this tree were found basing on the parameters of unique building made from its trunk that had survived on Lithuania since the beginning of 1880s. The new estimations of this famous oak−tree size are presented.

Źródło:

Sylwan; 2009, 153, 12; 847-851
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 76.

Tytuł:

Retrospektywna analiza wybranych właściwych liczb kształtu strzał dębu
A retrospective analysis of the selected true form factors for oak

Autorzy:

Turski, M.

Powiązania:

https://bibliotekanauki.pl/articles/972838.pdf

Data publikacji:

2003

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

dendrometria
lesnictwo
dab
wlasciwa liczba ksztaltu strzaly
drzewa lesne
Quercus
true form factor
oak stem

Opis:

The paper presents a retrospective analysis of the selected form factors for oak stems. The analysis of twelve true form factors (f L/15, f L/10, f L/9, f L/8, f L/7, f L/6, f L/5, f L/4, f 3/10L, f L/3, f 4/10L, f L/2) was done to find the lowest value of the variation coefficient in the successive five−year intervals of tree lives. The relationship between the form factors and dbh over bark, height and slenderness of trees was also analysed.

Źródło:

Sylwan; 2003, 147, 07; 31-39
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 77.

Tytuł:

Sterowanie napędem zespołu chwytno-pozycjonującego w automacie skaryfikującym nasiona dębu

Autorzy:

Tadeusiewicz, R.
Klocek, J.
Piłat, A.
Jabłoński, M.
Tylek, P.
Walczyk, J.
Adamczyk, F.
Szaroleta, M.

Powiązania:

https://bibliotekanauki.pl/articles/305017.pdf

Data publikacji:

2017

Wydawca:

Wydawnictwo Druk-Art

Tematy:

urządzenie chwytno-pozycjonujące
sterowanie napędem
nasiona dębu
gripping and positioning device
drive control
oak seeds

Opis:

W artykule opisano strukturę i zasadę działania układu sterowania i napędu dla zespołu chwytno-pozycjonującego, będącego częścią automatu przeznaczonego do skaryfikacji i oceny zdrowotności żołędzi. Urządzenie to, zaprojektowane wspólnie przez specjalistów z Uniwersytetu Rolniczego w Krakowie oraz inżynierów z AGH z Krakowa, PIMR z Poznania i zbudowane przez pracowników dwóch firm: OPTISTER z Krakowa i PROMAR z Poznania, ma za zadanie zwiększyć liczbę uzyskiwanych sadzonek dębów poprzez eliminację nasion nierokujących nadziei na to, że z nich wyrosną potrzebne sadzonki. Opis celu i zasady działania automatu był przedmiotem innych prac, cytowanych w wykazie literatury, natomiast w niniejszej pracy opisano wspomniany wyżej szczegółowy fragment rozważanej konstrukcji, a mianowicie układ sterowania i napędu dla zespołu chwytno-pozycjonującego. Prezentowane rozwiązanie zawiera interesujące nowatorskie rozwiązania konstrukcyjne, może więc zainteresować czytelników zajmujących się budową urządzeń chwytno-pozycjonujących o podobnym lub innym przeznaczeniu.
In paper the new gripping-positioning unit driver control in an automaton scarifying oak seeds is described and discussed. Such automaton was designed by specialists form Agricultural University in Krakow with engineers from AGH University of Science and Technology in Krakow and PIMR in Poznan. Discussed in presented paper part of scarifying automaton (the gripping-positioning unit with drivers and automatic control) was built in two factories: OPTISTER from Krakow and PROMAR from Poznan. Whole automaton is dedicated for increasing number of oak seeds by means of eliminating form sowing process acorns which are damaged in any form. This automatic selection can be very effective and fast, in contrast to manual processing performed up to day. The whole description of design and construction of considered automatom was given in previous publications by authors, listed in bibliography.

Źródło:

Napędy i Sterowanie; 2017, 19, 11; 82-87
1507-7764

Pojawia się w:

Napędy i Sterowanie

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 78.

Tytuł:

The soil fungi communities of brown forest podzolic soils in two different oak-hornbeam forests of the Zwierzyniecki Park in Bialystok

Autorzy:

Tyszkiewicz, Z

Powiązania:

https://bibliotekanauki.pl/articles/1450887.pdf

Data publikacji:

2001

Wydawca:

Polska Akademia Nauk. Instytut Agrofizyki PAN

Tematy:

degenerated oak-hornbeam forest
Pinus-Lamniastrum
Polska
brown soil
forest soil
oak-hornbeam forest
podzolic soil
Zwierzyniecki Park
soil fungi
soil
fungi community
Bialystok
grey-brown podzolic soil
terrestrial ecosystem
forest
Tilio-Carpinetum typicum

Opis:

The aim of the studies carried out in the natural oak-hornbeam forest Tilio-Carpinetum typicum and in the degenerated form in the stage of pinetization Pinus-Lamniastrum, was to obtain and compare qualitative-quantitative structures of soil fungi communities in two different oak-hornbeam forests. This degenerated form of oak-hornbeam forest is the result of removing the natural tree population (typical oak-hornbeam forest) and re-afforesting the resultant vacant area with pines. The study plots were located in such a way that the variations of soil fungi communities were affected only by seasonal changes in the vegetation of the degenerated oak-hornbeam forest Pinus-Lamnias- trum. The soils in both study plots are typical forest grey-brown podzolic soils (Luvisols). The results of mycoiogical studies indicate significant differences between soil fungi communities in both oak-hornbeam forests, although similarities especially in species composition of 15 of the most abundant fungi species were also found. The differences are the result of changes in the floral composition of degenerated oak-hornbeam forest. In the past, when typical oak-hornbeam forest covered whole studied areas, the soil fungi communities were probably almost the same in both plots. The first change could have happened after the removal of the trees; the second, after the re-afforestation of the resulting vacant area with pines. The re-appearance of Tilio-Carpinetum typicum in its once occupied habitat causes changes in the soil fungi community in the degenerated oak-hornbeam forest.

Źródło:

Acta Agrophysica; 2001, 50; 235-244
1234-4125

Pojawia się w:

Acta Agrophysica

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 79.

Tytuł:

Variability of Quercus robur L. and Quercus petraea (Matt.) Liebl. acorn size in the region of the Pomeranian plains

Autorzy:

Major, S

Powiązania:

https://bibliotekanauki.pl/articles/41221.pdf

Data publikacji:

2002

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

variability
Pomeranian region
acorn size
dry mass
acorn length
acorn diameter
Quercus robur
Quercus petraea
oak

Opis:

The results of measurements of 5780 acorns confirm that Quercus robur has acorns of langer size, as componed with acorns of Quercus petraea. Their length varied from 1.90 to 3.50 cm, with the average 2.71 cm, while in case of Q. petraea this characteristic varied from 1.60 to 3.50 cm, with the average 2.43 cm. The diameter of acorns was similar for both species. Dry mass of Q. robur acorns ranged from 1.054 to 4.937 g, on average 2.5924 g; in the case of Q. petraea it ranged from 0.835 to 4.796g, on average 1.8364 g. Taking into consideration the coefficient of variability of length and diameter, both species do not differ significantly. It ranged from 9 to 12%. In the case of dry mass the difference was larger and it was 23% and 28% for Q. robur and Q. petraea, respectively. The analysis of variance (F-test) showed, that the species taken as the source of variability influences significantly the length of acorns (in 17%) and dry mass (in 47%). Internal features determine these characteristics in 52% and 46%. F-test did not detect any dependence between oak species and the diameter of acorns.

Źródło:

Dendrobiology; 2002, 47 Supplement
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 80.

Tytuł:

An analysis of selected traits of typical supply of oak logs and a comparison of the efficiency of their processing into flooring

Autorzy:

Rębkowski, Bartłomiej
Koczan, Grzegorz
Kozakiewicz, Paweł
Krzosek, Sławomir

Powiązania:

https://bibliotekanauki.pl/articles/2200218.pdf

Data publikacji:

2020

Wydawca:

Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie

Tematy:

wood raw material
European oak wood
wood flooring
multi-layer parquet elements
X-ray computed tomography

Opis:

An analysis of selected traits of typical supply of oak logs and a comparison of efficiency of their processing into flooring. The research was performed on typical supply of oak wood logs of WC02 class, diameter from 29 to 34 cm, measured in the middle of its length (full log length 2.3 m). Wood came from Bobolice forest district, Lubowo forest subdistrict. This type of raw wood is used in standard machining processes (sawing) of multi-layer flooring face layer (top layer, lamella). The application of X-ray computed tomography allows to perform full valuation of raw material quality. The introduction of partially chip-less machining technology leads to significant savings in wood in comparison with standard machining (sawing).
Analiza wybranych cech typowej dostawy kłód dębowych oraz porównanie wydajności ich przerobu na materiały podłogowe. Badania przeprowadzono na drewnie dębowym WC02 o średnicy w połowie długości bez kory od 29 do 34 cm i długości 2,3 m z Nadleśnictwa Bobolice, Leśnictwa Lubowo (reprezentatywny surowiec). Tego typu surowiec jest stosowany w standardowej technologii obróbki wiórowej przy wytwarzaniu warstw licowych (lameli) desek warstwowych. W pracy przeanalizowano jak wpłynęłaby na wydajność ilościową, zamiana technologii na częściowo bezwiórową. Zastosowanie obróbki częściowo bezwiórowej pozwala na zaoszczędzenie znaczących ilości surowca. Straty przy obróbce częściowo bezwiórowej w odniesieniu do całej kłody dębowej mogą być o ok. 15 punktów procentowych niższe niż w przypadku obróbki wiórowej. W odniesieniu do pryzmy różnica wielkości strat może wynosić nawet do 31 punktów procentowych. Sama analiza ilościowa nie daje odpowiedzi o celowości wprowadzania nowej technologii, bowiem nie uwzględnia wielu czynników np.: energochłonności obróbki hydrotermicznej niezbędnej przy skrawaniu. Równie istotna jest jakość pozyskiwanych lameli dębowych, co było przedmiotem analiz w innej pracy.

Źródło:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology; 2020, 109; 92--102
1898-5912

Pojawia się w:

Annals of Warsaw University of Life Sciences - SGGW. Forestry and Wood Technology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 81.

Tytuł:

Korek naturalny. Cz. I. Uprawy dębu korkowego, makro- i mikroskopowa morfologia korka
Natural cork. Part I. Cork oak tree culture, macro- and micromorphology of cork

Autorzy:

Urbaniak, M.
Gołuch-Góreczna, R.
Błędzki, A. K.
Gajdziński, S.

Powiązania:

https://bibliotekanauki.pl/articles/947070.pdf

Data publikacji:

2017

Wydawca:

Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej

Tematy:

korek
uprawy dębu korkowego
morfologia
skład chemiczny
suberyna
cork
cork oak tree culture
morphology
chemical composition
suberin

Opis:

Kora dębu korkowego, uprawianego głównie w Portugalii i w krajach zachodniej części basenu Morza Śródziemnego, jest wykorzystywana od ponad 5 tys. lat. Obecnie znajduje szerokie zastosowanie, od naturalnych korków do butelek po elementy z kompozytów w budownictwie, transporcie, a nawet przemyśle kosmicznym, jest strategicznym surowcem dla zrównoważonego rozwoju, nie tylko krajów śródziemnomorskich. W Cz. I artykułu omówiono uprawy dębów korkowych oraz strukturę chemiczną ich kory, a także makro- i mikroskopową morfologię korka naturalnego.
Cork is the bark of the cork oak tree cultivated mainly in Portugal and the Mediterranean region. As amaterial it has been used for more than 5000 years. Nowadays, it is used in multiple applications, from wine bottles to aeronautics and regarded as astrategic material for sustainable development in many countries. The first part of the presented review is focused on cultivation aspects of cork oak trees as well as morphology (at macro- and microscales) and chemical structure of suberin, the main constituent of cork. The honeycomb-like cork structure makes it one of the best natural, renewable, sustainable raw material, which is used all over the world.

Źródło:

Polimery; 2017, 62, 5; 388-393
0032-2725

Pojawia się w:

Polimery

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 82.

Tytuł:

Charakterystyka geobotaniczna rzeki Pichna Szadkowicka na odcinku od źródła w Zimnej Wodzie do ujścia z terenu Uroczyska Wojsławice
Geobotanical characteristic of the Pichna Szadkowicka river section from river’s headwater area in the Zimna Woda village to its outlet from the Wojsławice forest complex

Autorzy:

Woziwoda, Beata
Szczerkowska-Majchrzak, Eliza

Powiązania:

https://bibliotekanauki.pl/articles/510390.pdf

Data publikacji:

2014

Wydawca:

Uniwersytet Łódzki. Wydawnictwo Uniwersytetu Łódzkiego

Tematy:

lowland river
vascular plants
riparian forest
wet oak-lime-hornbeam forest
rzeka nizinna
rośliny naczyniowe
las łęgowy

Opis:

The paper presents the river valley physiography and the selected hydraulic, physics and chemical parameters of the upper section of small lowland river – Pichna Szadkowicka (the Warta river catchment, Central Poland). The strong relationship between the river and river valley habitat’s characteristics and the plant species and vegetation diversity was noted. Around one hundred (93) of vascular plant species was noted in total, including Listera ovata (strictly protected) and partially protected: Hedera helix, Viburnum opulus, Frangula alnus and Hepatica nobilis. The high natural (botanical) and landscape values of the researched section of the Pichna Szadkowicka river with adjacent parts of Wojsławice forest complex justify additionally their protection in the network of forests reference plots and of the High Conservation Value Forests (HCFV).

Źródło:

Biuletyn Szadkowski; 2014, 14; 179-188
1643-0700

Pojawia się w:

Biuletyn Szadkowski

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 83.

Tytuł:

Activity of selected antioxidant enzymes in Quercus robur L. leaves infected with Microsphaera alphitoides

Autorzy:

Skwarek, M.
Patykowski, J.
Nowogorska, A.

Powiązania:

https://bibliotekanauki.pl/articles/80038.pdf

Data publikacji:

2013

Wydawca:

Polska Akademia Nauk. Czytelnia Czasopism PAN

Tematy:

conference
antioxidative enzyme
Quercus robur
leaf infection
Microsphaera alphitoides
powdery mildew
oak powdery mildew
Ascomycetes
peroxidase
superoxide dismutase

Źródło:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology; 2013, 94, 3
0860-7796

Pojawia się w:

BioTechnologia. Journal of Biotechnology Computational Biology and Bionanotechnology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 84.

Tytuł:

Kształtowanie się smukłości pni dębu szypułkowego (Quercus robur L.) w zależności od wieku drzew
Forming slendernes of pedunculate oak stems [Quercus robur L.] in dependence of age of trees

Autorzy:

Kaźmierczak, K.
Pazdrowski, W.
Mańka, K.
Szymański, M.
Nawrot, M.

Powiązania:

https://bibliotekanauki.pl/articles/1012526.pdf

Data publikacji:

2008

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

dendrometria
smuklosc drzew
wiek drzew
Quercus robur
lesnictwo
dab szypulkowy
drzewa lesne
slenderness
pedunculate oak
stand stability
age

Opis:

Paper identifies value and variability of slenderness of pedunculate oak stems in age range from 10 to 140 years describing slenderness of tree stems simultaneously using linear and multiplies regression. Strength of the connections between slenderness and selected dendrometrical traits was also defined. Dependence of the slenderness was investigated with respect to height, breast height diameter, and 10−years increment of breast height diameter, volume and 10−years volume increment in specific years of tree life. The slenderness of trees decreases with the growth of breast height diameter, breast height diameter increment, volume and volume increment. In case of height opposite tendency was observed. Dependence of slenderness on breast height diameter, height and age was analysed for all trees altogether as well. Slenderness was described additionally with linear and multivariate empirical equations.

Źródło:

Sylwan; 2008, 152, 07; 39-45
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 85.

Tytuł:

The history and natural regeneration of a secondary oak-beech woodland on a former wood-pasture in Hungary

Autorzy:

Varga, A.
Odor, P.
Molnar, Z.
Boloni, J.

Powiązania:

https://bibliotekanauki.pl/articles/59012.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

history
natural regeneration
secondary forest
oak-beech forest
socioeconomic change
forest cover change
large tree
wood pasture
Hungary

Opis:

Characteristic features of European woodland include both a reduction in natural forest areas and an increase in former agricultural areas occupied by secondary woodland. The management of these areas is challenging in terms of nature conservation, agricultural and forestry management and policy. The aim of our study was to reconstruct the history and to document the current tree stand structure for a secondary oak-beech woodland in Hungary. Towards the end of the 1800s, this area which was once almost completely occupied by a continuous forest, had been transformed into a wood-pasture. As a result of its gradual abandonment, the closed forest stand of the pasture increased from 10 to 52% between 1963 and 2005. The most characteristic feature of this woodland is the abundance of large trees. Globally, the number of large and ancient trees is rapidly diminishing. Therefore preserving and maintaining such areas, where large trees could live, is an essential management task.

Źródło:

Acta Societatis Botanicorum Poloniae; 2015, 84, 2
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 86.

Tytuł:

Acer truncatum seedlings are more plastic than Quercus variabilis seedlings in response to different light regimes

Autorzy:

Guo, X.
Wang, R.-Q.
Wang, C.D.
Xu, F.
Zhao, S.
Guo, W.-H.

Powiązania:

https://bibliotekanauki.pl/articles/41339.pdf

Data publikacji:

2016

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

Acer truncatum
seedling
Quercus variabilis
Chinese cork oak
plant response
light regime
irradiance acclimation
chlorophyll fluorescence
morphology
photoinhibition

Opis:

In this study, we investigated responses of the mid-successional species Acer truncatum Bunge and the late-successional species Quercus variabilis Blume to three solar illumination conditions: (1) constant low light (CL), (2) constant high light (CH) and (3) low light first and high light afterwards (LH). The last treatment was to simulate a canopy opening. Both species exhibited increases in biomass, totally and in part, and decreases in leaf water content, specific leaf area and chlorophyll concentrations in LH treatment compared to CL treatment. For A. truncatum, exposure to high light condition (LH) increased crown area, and decreased root to shoot ratio, stem mass ratio and leaf perimeter. However, for Q. variabilis, LH treatment increased stem diameter at ground height, effective quantum yield, photochemical quenching and decreased maximum photosystem II quantum yield. The biomass allocation pattern did not change in Q. variabilis among three light conditions. With respect to newly developed leaves, no significant differences were found in leaf size of Q. variabilis between LH treatment and CH treatment while that of A. truncatum decreased in LH treatment. All chlorophyll fluorescence parameters in newly developed oak leaves in LH treatment increased compared to those of CH treatment while no difference was found for A. truncatum between LH and CH treatment. A. truncatum displayed a greater overall plasticity than Q. variabilis although the oak seedlings have a greater plasticity with respect to chlorophyll concentration and chlorophyll fluorescence parameters. A. truncatum should be a better candidate for vegetation recovery, especially in places with heterogeneous light conditions.

Źródło:

Dendrobiology; 2016, 76
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 87.

Tytuł:

Multipleksowa detekcja gatunków Phytophthora przy użyciu platformy Fluidigm
Multiplex detection of Phytophthora spp. using the Fluidigm platform

Autorzy:

Sikora, K.
Oszako, T.
Kubiak, K.
Nowakowska, J.A.
Malewski, T.

Powiązania:

https://bibliotekanauki.pl/articles/2142612.pdf

Data publikacji:

2020

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

forest soil
oomycetes
oak dieback
pathogens
next generation sequencing
gleby leśne
oomycety
zamieranie dębów
patogeny
sekwencjonowanie nowej generacji

Opis:

The genus Phytophthora plays an important role not only in agriculture but also in forest ecosystems. As the number of known Phytophthora species continues to grow, identifying new isolates in this genus has become increasingly challenging even by DNA sequencing. Therefore, the development of proper techniques for detection and identification is crucial for monitoring and control of these pathogens in the forestry sector. In recent years, new molecular methods using innovative approaches have indeed been developed. However, the majority of these methods was designed to detect single Phytophthora species. Techniques that are able to target multiple species would offer advantages, especially for the assessment of Phytophthora diversity in the environment. This paper describes a multiplex assay for the identification of eight Phytophthora isolates, down to the species level, based on a Fluidigm platform employing pyrosequencing. The obtained results showed that for an accurate determination of the species, it is sufficient to know the sequence of two markers, ITS and COX1. The sensitivity of this test is sufficient to identify Phytophthora in a pure culture. Unfortunately, analysis based on a pyrosequencing platform does not provide enough data to simultaneous identify multiple Phytophthora species in samples collected in the field. This problem could be resolved in the future by sequencing using more efficient platforms like Illumina or IonTorrent.

Źródło:

Leśne Prace Badawcze; 2020, 81, 4; 161-166
1732-9442
2082-8926

Pojawia się w:

Leśne Prace Badawcze

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 88.

Tytuł:

Konsekwencje hodowlane obumierania dębów
Sylvicultural consequences of oak decline

Autorzy:

Bernadzki, E.
Grynkiewicz, J.

Powiązania:

https://bibliotekanauki.pl/articles/1018431.pdf

Data publikacji:

2006

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

drzewostany debowe
hodowla lasu
zamieranie lasow
Quercus
lesnictwo
dab
zamieranie drzew
drzewa lesne
oak decline
stand conversion
transitional communities

Opis:

The rate of oak decline has greatly accelerated in recent years. It has been reported that in October 2005, the amount of standing dead trees in oak stands of 14 Forest District Administrations situated within the Regional Directorate of State Forests in Warsaw exceeded 70,000 m3 and an area of 103 hectares was selected where sanitary fellings need to be applied. The restocking of cut areas in the thinned stands with substitutional species was proposed. Besides, the paper presents a conception of oak regeneration by planting trees in wider spacing, under the shelter of pioneer species (mainly birch), using the tending species (i. a. hornbeam).

Źródło:

Sylwan; 2006, 150, 08; 61-69
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 89.

Tytuł:

Variation in acorn traits among natural populations of Quercus alnifolia, an endangered species in Cyprus

Autorzy:

Anagiotos, G.
Tsakaldimi, M.
Ganatsas, P.

Powiązania:

https://bibliotekanauki.pl/articles/41714.pdf

Data publikacji:

2012

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

variation
acorn trait
natural population
Quercus alnifolia
endangered species
seed germination
desiccation
golden oak
plant morphology
population variability
Cyprus

Opis:

Quercus alnifolia is an endemic species in Cyprus, and it is rated as Vulnerable (VU) in the Red List of Oaks. Although Q. alnifolia has a great ecological importance, there are only few studies about this species. In this work we have studied the natural variability of this species by analyzing acorn dimensions, acorn mass, length of embryo, moisture content of acorns and seed germinability among the seven acorn provenances, collected in Cyprus. We also determined the seeds responses to drying. Germination trials were also carried out, and differences in seed germination among populations were examined. Rate of water loss and its effect on seed germination was also estimated by application of specific desiccation treatments. The results showed that acorn characteristics significantly differed between the populations, following a general trend to reduce their dimensions and mass with the altitude increase. Seed germination was high for all studied populations, and germination behaviour was similar for all populations. Desiccation of acorns below 35% resulted in a great reduction of seed germination capacity.

Źródło:

Dendrobiology; 2012, 68
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 90.

Tytuł:

Supplementary irrigation at container nursery

Autorzy:

Durlo, G.
Jagiello-Lenczuk, K.
Kormanek, M.
Malek, S.
Banach, J.

Powiązania:

https://bibliotekanauki.pl/articles/45462.pdf

Data publikacji:

2018

Wydawca:

Instytut Badawczy Leśnictwa

Tematy:

water balance
forest
seedling
nursery
Scotch pine
Norway spruce
oak
European beech
forest tree
seedling production
climate condition
forestry

Źródło:

Leśne Prace Badawcze; 2018, 79, 1
1732-9442
2082-8926

Pojawia się w:

Leśne Prace Badawcze

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 91.

Tytuł:

Statistical characteristics of double bark thickness at breast height based on pine (Pinus sylvestris L.), larch (Larix decidua Mill.) and oak (Quercus robur L.)
Statystyczna charakterystyka podwójnej grubości kory drzew na pierśnicy na przykładzie sosny (Pinus sylvestris L.) modrzewia (Larix decidua Mill.) i dębu (Quercus robur L.)

Autorzy:

Kazmierczak, K.
Pazdrowski, W.
Szymanski, M.
Nawrot, M.

Powiązania:

https://bibliotekanauki.pl/articles/9695.pdf

Data publikacji:

2009

Wydawca:

Uniwersytet Przyrodniczy w Lublinie. Katedra Zastosowań Matematyki i Informatyki

Tematy:

statistical characteristics
tree bark
bark thickness
breast height
Scotch pine
pine
Pinus sylvestris
larch
Larix decidua
oak
Quercus robur

Źródło:

Colloquium Biometricum; 2009, 39
1896-7701

Pojawia się w:

Colloquium Biometricum

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 92.

Tytuł:

Zasięg oddziaływania iniekcji hydrostatycznych w drewnie dębu szypułkowego (Quercus robur L.)

Autorzy:

Zarzyński, P.

Powiązania:

https://bibliotekanauki.pl/articles/1022214.pdf

Data publikacji:

2005

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

drewno debowe
iniekcja hydrostatyczna
Quercus robur
lesnictwo
dab szypulkowy
zasieg dzialania
drzewa lesne
hydrostatic injections
sessile oak wood
effect range

Opis:

Hydrostatic injections are the method of applying chemicals directly into the wood of living trees. Laboratory tests proved their usefulness. However, still an open question remained the range of penetration of the liquid fed into the tree this way. To answer this question, a series of experiments were performed, using water with an addition of methylene blue – a dye leaving durable effects in the wood – as the working liquid. This paper depicts the results of this experiment.

Źródło:

Sylwan; 2005, 149, 04; 15-20
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 93.

Tytuł:

Fusarium spp. na nadziemnych organach zamierających dębów - nowe zagrożenie?
Fusarium spp. on the above-ground organs of dying oaks – a new threat?

Autorzy:

Wit, M.
Sierota, Z.
Oszako, T.
Mirzwa-Mróz, E.
Wakuliński, W.

Powiązania:

https://bibliotekanauki.pl/articles/989848.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
drzewa lesne
fitopatologia lesna
dab
Quercus
zamieranie drzew
paki
pedy
grzyby
Fusarium
wystepowanie
zagrozenia roslin
oak decline
fusarium spp.

Opis:

Oak decline is insufficiently described problem. Declining oaks are in various age and the most commonly observed symptoms of the disease include growth inhibition and buds mortality. The dieback occurs periodically, mainly because of the impact of abiotic factors (drought, frost and the lowering of the groundwater level). In this complex phenomenon the biological factors, including numerous species of Chromista (Chromalveolata) and fungi play important role as well. The list of pathogens responsible for the dieback includes numerous species of Pythium and Phytophthora, as well as Biscogniauxia, Discula, Pleurophoma, Botryosphaeria and Diplodia. Among other organisms responsible for the oak decline are fungi belonging to Fusarium species. The aim of this study was to investigate the species composition of pathogens colonizing the dying oak buds including undeveloped or dying shoots obtained from Łomża, Rudka and Czarna Białostocka forest districts (eastern Poland). Sampling of symptomatic shoots of Quercus robur L. was performed in 2013, respecting different parts of tree crowns (top, central and bottom). Mycological material for analysis included mycelium growing on dying shoots after incubation in a chamber and tissue collected from symptomatic shoots and placed on PDA medium. For selected isolates of fungi the identification was confirmed by the PCR analysis using ITS1 and ITS4 primers. Among analyzed fungi Fusarium spp., Alternaria alternata, Cladosporium cladosporioides, Botryosphaeria quercuum and /em>Coniothyrium spp. required special attention. The Fusarium spp. group of fungi dominated with an average frequency of 32%. The molecular analysis revealed the presence of several species including Fusarium avenaceum, Cladosporium cladosporioides, Lophiostoma corticola and Nectria mauritiicola.

Źródło:

Sylwan; 2015, 159, 05; 403-410
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 94.

Tytuł:

Tempo wzrostu wysokości dębu szypułkowego (Quercus robur L.) w dolnej warstwie drzewostanu sosnowego
Height growth rate of pedunculate oak (Quercus robur L.) in lower layer of Scots pine stand

Autorzy:

Paluch, R.

Powiązania:

https://bibliotekanauki.pl/articles/994087.pdf

Data publikacji:

2013

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesnictwo
hodowla lasu
odnowienia podokapowe
dab szypulkowy
Quercus robur
wzrost roslin
tempo wzrostu
modele wzrostu
pedunculate oak
height growth
undergrowth

Opis:

This study was carried out in north−eastern Poland in 20 Scots pine stands with well−developed lower layer of pedunculate oak. In each stand, 5 highest oak trees were selected. Basing on the stem analysis, a growth model for oak undergrowth in Scots pine stands was elaborated. It can be used for determination the height growth rate in relation to the age and height of oak. Obtained model was compared to the already existing one for oaks growing without canopy [Bruchwald at el. 1996]. Growth rate of undergrowth oaks was significantly delayed in the initial period by 20−30 years.

Źródło:

Sylwan; 2013, 157, 12; 909-916
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 95.

Tytuł:

Dąb jako baza antroponimiczna
Dąb as an Anthroponimic Base

Autorzy:

Makarski, Władysław

Powiązania:

https://bibliotekanauki.pl/articles/1944001.pdf

Data publikacji:

2010

Wydawca:

Katolicki Uniwersytet Lubelski Jana Pawła II. Towarzystwo Naukowe KUL

Tematy:

struktura i znaczenie nazwisk oddębowych
homonimia antroponimiczna
stratygrafia antroponimiczna
structure and meaning of oak-derived names
anthroponymic homonymy
anthroponymic stratygraphy

Opis:

This paper analyses over 370 contemporary Polish names based on the appelative dąb (oak). They can be divided into four basic groups of meaning: a) man is characterised as compared to the power of an oak; b) it belongs to a person whose name is derived from an oak; c) someone belongs to a place whose name is derived from an oak; d) a chancellery name ending in –ski derived from an oak. These names, aside to the primary names, are forms by means of suffixes: -ch-, -cz-, -j-, -l-, -ł-, -n-, -ń-, -r-, -s-, -ś-, -sz-, -t-; -a-, -o-; -ów, -owy, -in, -ny; -c-,; -k-; -ic(z); -ski. Sometimes names have a complex form and hybryd with foreign linguistic elements of Russian, German, and Latin. The ambiguity of foundations and multifunctional character of some of their formants results in the phenomenon of homonymy that is present in the anthroponymy under study. Such an anthroponymy, described with regard to its semantic and formal aspect, took shape from the pra-Slavonic times up to the nineteenth century. It is part of the context of floristic anthroponyms and, broader, natural; being its considerable element. This is confirmed by the important role of the oak in the language as a reflection of its meaning in the landscape and in man’s material and spiritual life.

Źródło:

Roczniki Humanistyczne; 2010, 58, 6; 119-155
0035-7707

Pojawia się w:

Roczniki Humanistyczne

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 96.

Tytuł:

The spread of Impatiens parviflora DC. in Central European oak forests - another stage of invasion?

Autorzy:

Reczynska, K.
Swierkosz, K.
Dajdok, Z.

Powiązania:

https://bibliotekanauki.pl/articles/56626.pdf

Data publikacji:

2015

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

Impatiens parviflora
spread
Central Europe
oak forest
invasive plant
long-term change
plant species
species composition
forest vegetation
small balsam

Opis:

In this study, we examine the pattern of occurrence of Impatiens parviflora in Central European oak forests over time and its ecological requirements within these types of communities. Research was based on phytosociological data collected in 3776 relevés. A modified TWINSPAN algorithm were used to distinguish the groups of oak forests. The ecological preferences of the I. parviflora and studied communities as well as differences between invaded and non-invaded vegetation plots were analyzed using mean weighted Ellenberg indicator values (EIVs). Finally, both the temporal pattern of I. parviflora participation and changes in its coverage in the studied communities were analyzed. Our study confirmed a high adaptability of this species with respect to temperature, moisture, soil reaction and nutrients and determined its broad ecological optimum in oak forests. However, it also revealed both a greater sensitivity of some communities within Central European oak forests to the invasion of I. parviflora and differences in habitat conditions between invaded and non-invaded vegetation plots. This suggests that the habitat niche of I. parviflora within oak forests is not accidental. The analysis of temporal changes in the frequency of I. parviflora confirmed a 20% increase in relevés over the last 50 years. However, we did not identify any statistically significant rise in the coverage of I. parviflora in oak forests specifically during the studied period.

Źródło:

Acta Societatis Botanicorum Poloniae; 2015, 84, 4
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 97.

Tytuł:

Modelling of the relationship between the SPAD values and photosynthetic pigments content in Quercus petraea and Prunus serotina leaves

Autorzy:

Bielinis, E.
Jozwiak, W.
Robakowski, P.

Powiązania:

https://bibliotekanauki.pl/articles/41313.pdf

Data publikacji:

2015

Wydawca:

Polska Akademia Nauk. Instytut Dendrologii PAN

Tematy:

black cherry
tree
modelling
relationship
SPAD value
photosynthetic pigment
pigment content
Quercus petraea
Prunus serotina
leaf
sessile oak
chlorophyll
carotenoid

Opis:

In forest research and nursery practice there is often a need to monitor the condition and responses of trees to different stressors. Chlorophyll content in leaf is a good indicator of plant health and can be measured rapidly in many repetitions using the chlorophyll meter SPAD-502Plus. This practical tool provides the values of chlorophyll content in relative units (SPAD values), therefore it should be calibrated for each species to determine chlorophyll content in physiological units. In this study, the chlorophyll meter SPAD-502Plus was calibrated to be used for total chlorophyll (Chl), chlorophyll a (Chl a), chlorophyll b (Chl b) and carotenoids (Car) contents determination in leaves of Quercus petraea and Prunus serotina seedlings growing in different light environments. In the same leaf, SPAD values were measured with the Chl meter, and then photosynthetic pigments content (PP; chlorophyll and carotenoids) was consistently assessed using a conventional extraction method. The measurements were conducted once a month from May to November in three light treatments to obtain the widest possible range of the PP content values. To estimate total Chl content in leaves using the chlorophyll meter the quadratic polynomial functions: y = 0.0374x2 + 0.5345x + 0.5137 and y = 0.024x2 + 2.1998x – 32.7866 were obtained from the relationship between the Chl meter SPAD readings and total Chl determined spectrophotometrically for P. serotina and Q. petraea, respectively. Chl was higher under shade compared with full light regime and Car were linearly correlated with Chl. PP content was positively correlated with air temperature except for Car in P. serotina leaves. It was concluded that at the same soil conditions chlorophyll content in leaves of Q. petraea and P. serotina depended on species, light regimes and temperature of growth. The chlorophyll meter can be used as a practical tool to monitor and compare photosynthetic pigments content in leaves between tree species or populations acclimated to different environments together with a control of abiotic and biotic factors affecting pigments content and leaf optical properties.

Źródło:

Dendrobiology; 2015, 73
1641-1307

Pojawia się w:

Dendrobiology

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 98.

Tytuł:

Variability in morphology of Microsphaera alphitoides Griffon et Maubl. in Poland

Autorzy:

Ufnalski, K
Przybyl, K.

Powiązania:

https://bibliotekanauki.pl/articles/56970.pdf

Data publikacji:

2004

Wydawca:

Polskie Towarzystwo Botaniczne

Tematy:

variability
powdery mildew
young tree
Polska
forest stand
nursery seedling
morphology
leaf
Microsphaera alphitoides
taxonomy
Quercus robur
oak
Quercus petraea

Opis:

The aim of this study was to verify descriptions of the morphology of the fungus responsible for powdery mildew on oak leaves of nursery seedlings and of young trees in forest stands. Infected, fully developed leaves from apical parts of stems of Quercus robur or Q. petraea were collected in two national parks and in six forest districts in Poland. The taxonomic characteres of all specimens were generally consistent with those given in keys for Microsphaera alphitoides. However, the limoniform shape of conidia, characteristic of two sites (nurseries), has not been found in available synopses. Limoniform conidia were significantly longer and wider than others. Agreat variety of forms of mycelium on leaves were observed. The mycelium appeared in three forms: (1) floccose or felted oval patches (always with yellow or brown discoloration), (2) faveolate oval patches (often with yellow or brown discoloration), and (3) felted or mealy mycelium along veins (rarely with discoloration). Mycelium without limoniform conidia appeared in all forms, while mycelium with limoniform conidia appeared only in the form of patches, always causing leaf discoloration.

Źródło:

Acta Societatis Botanicorum Poloniae; 2004, 73, 3
0001-6977
2083-9480

Pojawia się w:

Acta Societatis Botanicorum Poloniae

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 99.

Tytuł:

Wyniki przebudowy drzewostanów w Nadleśnictwie Doświadczalnym Siemianice

Autorzy:

Jaszczak, R.
Magnuski, K.

Powiązania:

https://bibliotekanauki.pl/articles/1022076.pdf

Data publikacji:

2005

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

drzewostany sosnowe
drzewostany debowe
rebnie
drzewostany swierkowe
przebudowa drzewostanow
lesnictwo
Nadlesnictwo Doswiadczalne Siemianice
reconstruction
cuttings
transformation cuttings
pine
spruce
oak

Opis:

The study presents results of long−term investigations carried out in the Siemianice Experimental Forest Division on the reconstruction of pine, oak and spruce old forests employing different types of cuttings and their modifications as well as of medium−age pine stands using the author's own original method of 'transformation cutting'.

Źródło:

Sylwan; 2005, 149, 10; 20-27
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 100.

Tytuł:

Odnowienie naturalne dębu w Leśnym Kompleksie Promocyjnym "Puszcza Białowieska" - stan, warunki i perspektywy

Autorzy:

Paluch, R.

Powiązania:

https://bibliotekanauki.pl/articles/1022909.pdf

Data publikacji:

2005

Wydawca:

Polskie Towarzystwo Leśne

Tematy:

lesne kompleksy promocyjne
Quercus
lesnictwo
dab
odnowienia naturalne
Puszcza Bialowieska
drzewa lesne
oak
natural regeneration
białowieża primeval forest
hornbeam expansion

Opis:

The paper presents the state and conditions of oak natural regeneration in the „Białowieża Primeval Forest” Promotional Forest Complex. It has been stated that under natural conditions oak appears in all forest types but it infrequently grows into a stand. With the recent expansion of hornbeam, it is difficult for oak effectively to regenerate. It has been confirmed in this study that the shelterwood cutting system (leaving some trees to dye naturally) is the most efficient method of natural regeneration of oak in the Białowieża stands.

Źródło:

Sylwan; 2005, 149, 01; 30-41
0039-7660

Pojawia się w:

Sylwan

Dostawca treści:

Biblioteka Nauki

/5

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