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

/5

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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

/5

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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:

I re macedoni e le due corone di Zeus
The Macedonian Kings and the Two Wreaths of Zeus

Autorzy:

Santagati, Elena

Powiązania:

https://bibliotekanauki.pl/articles/52157799.pdf

Data publikacji:

2023

Wydawca:

Uniwersytet Jagielloński. Wydawnictwo Uniwersytetu Jagiellońskiego

Tematy:

oak wreath
Zeus
Vergina
Philip II

Opis:

This paper aims to investigate the reasons why, since the reign of Philip II, the “national” Zeus, venerated on Olympus and Dion and characterized by the oak crown, was abandoned in favor of the Olympian Zeus of Elis, characterized by the olive/oleaster wreath. We notice that while the members of the royal family display, in life and death, an oak wreath as an insignia of their kingship, and at the same time also as a symbol of their highest divinity, the kings themselves issue the image of the panhellenic god with an olive/laurel wreath on their coins.

Źródło:

Electrum; 2023, 30; 55-74
1897-3426
2084-3909

Pojawia się w:

Electrum

Dostawca treści:

Biblioteka Nauki

/5

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Skocz do pozycji: 13.

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

/5

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Skocz do pozycji: 14.

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

/5

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Skocz do pozycji: 15.

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: 16.

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

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Skocz do pozycji: 17.

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: 18.

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: 19.

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

/5

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Skocz do pozycji: 20.

Tytuł:

Analiza stanu zachowania najgrubszych dębów powiatu gryfińskiego
Analysis of the state of conservation of the largest oaks in Gryfino County

Autorzy:

Jankowski, Krzysztof
Klimowicz, Marta

Powiązania:

https://bibliotekanauki.pl/articles/50113557.pdf

Data publikacji:

2022-05-01

Wydawca:

Polskie Towarzystwo Dendrologiczne

Tematy:

Quercus
oak tree
natural monument
Gryfino County

Opis:

Oaks have often been depicted in scientific and popular literature primarily for their size, as well as cultural and historical value. Such studies usually concerned the most impressive specimens on a national scale. However, often there is little data on the largest specimens on a local scale. The study carried out between 2020-2021 in Gryfino County was an attempt to fill this gap. The study was conducted on a group of trees that are thickest in terms of diameter at breast height. The analysis included a detailed description of dendrological parameters and an assessment of health according to the scales used in modern dendrology. Information from historical sources was also taken into account.

Źródło:

Rocznik Polskiego Towarzystwa Dendrologicznego; 2021, 69; 59-70
2080-4164
2300-8326

Pojawia się w:

Rocznik Polskiego Towarzystwa Dendrologicznego

Dostawca treści:

Biblioteka Nauki

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Skocz do pozycji: 21.

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: 22.

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: 23.

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: 24.

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: 25.

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: 26.

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

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Skocz do pozycji: 27.

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: 28.

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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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

/5

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Skocz do pozycji: 30.

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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Skocz do pozycji: 31.

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: 32.

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: 33.

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: 34.

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

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Skocz do pozycji: 35.

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: 36.

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: 37.

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: 38.

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: 39.

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: 40.

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: 41.

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

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Skocz do pozycji: 42.

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: 43.

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: 44.

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: 45.

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: 46.

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: 47.

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: 48.

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: 49.

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: 50.

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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