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Wyszukujesz frazę "oak tree" wg kryterium: Temat


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
Artykuł
Tytuł:
Korek naturalny. Cz. I. Uprawy dębu korkowego, makro- i mikroskopowa morfologia korka
Natural cork. Part I. Cork oak tree culture, macro- and micromorphology of cork
Autorzy:
Urbaniak, M.
Gołuch-Góreczna, R.
Błędzki, A. K.
Gajdziński, S.
Powiązania:
https://bibliotekanauki.pl/articles/947070.pdf
Data publikacji:
2017
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Chemii Przemysłowej
Tematy:
korek
uprawy dębu korkowego
morfologia
skład chemiczny
suberyna
cork
cork oak tree culture
morphology
chemical composition
suberin
Opis:
Kora dębu korkowego, uprawianego głównie w Portugalii i w krajach zachodniej części basenu Morza Śródziemnego, jest wykorzystywana od ponad 5 tys. lat. Obecnie znajduje szerokie zastosowanie, od naturalnych korków do butelek po elementy z kompozytów w budownictwie, transporcie, a nawet przemyśle kosmicznym, jest strategicznym surowcem dla zrównoważonego rozwoju, nie tylko krajów śródziemnomorskich. W Cz. I artykułu omówiono uprawy dębów korkowych oraz strukturę chemiczną ich kory, a także makro- i mikroskopową morfologię korka naturalnego.
Cork is the bark of the cork oak tree cultivated mainly in Portugal and the Mediterranean region. As amaterial it has been used for more than 5000 years. Nowadays, it is used in multiple applications, from wine bottles to aeronautics and regarded as astrategic material for sustainable development in many countries. The first part of the presented review is focused on cultivation aspects of cork oak trees as well as morphology (at macro- and microscales) and chemical structure of suberin, the main constituent of cork. The honeycomb-like cork structure makes it one of the best natural, renewable, sustainable raw material, which is used all over the world.
Źródło:
Polimery; 2017, 62, 5; 388-393
0032-2725
Pojawia się w:
Polimery
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
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
Artykuł
Tytuł:
Oak (Quercus spp.) response to climate differs more among sites than among species in central Czech Republic
Autorzy:
Rybnicek, M.
Cermak, P.
Prokop, O.
Zid, T.
Trnka, M.
Kolar, T.
Powiązania:
https://bibliotekanauki.pl/articles/41078.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Instytut Dendrologii PAN
Tematy:
oak
Quercus
plant response
climatic parameter
precipitation
temperature
tree ring
Czech Republic
Opis:
Climatic parameters are the main environmental factors affecting tree growth. The main aim of the presented study was to determine whether different oak species growing under contrasting environmental conditions show different sensitivity to climatic parameters. Four oak stands with Quercus robur, Quercus petraea, Quercus polycarpa and Quercus dalechampii growing in the same area were evaluated. Standard dendrochronological methods were used for sample preparation, ring width measurements, cross-dating, chronology development, and the assessment of growth-climate response patterns. Although the species grew under different environmental conditions, their local tree-ring chronologies are highly correlated. The radial growth responses to climatic parameters differ slightly, but the response depends more on local site conditions than on the oak species. At the same time, the strongest correlations between radial growth and climatic parameters were identical among species and sites. The amount of water available in the soil was the main climate-dependent factor limiting radial growth. Approximately since the 1990s, the distribution of rainfalls within the growing season has changed at the expense of spring precipitation. The significance of relative soil moisture content during spring for oak growth increased and the significance of summer values decreased.
Źródło:
Dendrobiology; 2016, 75
1641-1307
Pojawia się w:
Dendrobiology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of Tree Shelters and Regeneration Method on Survival and Growth of Cork Oak Plantations in the Maamora Forest, Morocco
Autorzy:
El Alami, Sanae Lahlimi
El Aboudi, Ahmed
El Antry, Salwa
El Mnouar, El Ayyachi
Dallahi, Youssef
Rabhi, Ameur
Powiązania:
https://bibliotekanauki.pl/articles/27323832.pdf
Data publikacji:
2023
Wydawca:
Polskie Towarzystwo Inżynierii Ekologicznej
Tematy:
adaptation to climate change
arid climate
cork oak
forest regeneration
Morocco
tree shelter
Opis:
Forests are under intense human pressure, hindering their restoration. A potential solution to regeneration problems is the adoption of tree shelters, which have demonstrated protective benefits in the early establishment of forest plantations. A 9-year study was conducted in the Maamora forest (Morocco) to evaluate the effects of tube shelters and regeneration methods (direct seeding and seedling) on the growth and survival of cork oak (Quercus suber) plantations. A split-plot design was developed with three replicates of 36 plants for each of the four shelter treatments, including T0 (control), T1 (Tubex 1.20 m), T2 (Tubex 1.50 m), and T3 (Tubex 1.80 m) for a total of 964 plants, where periodic inventories were conducted to assess plant survival and growth. Our results show regeneration methods and shelters significantly influenced the survival of cork oak. Direct-seeded plants were more successful than those from seedlings, presenting survival rates of up to 97%. Despite a minimal shelter effect at the beginning, their positive influence was strong later on. Only plants installed with the 1.20 m shelter had an overall success rate of over 50%. Regeneration method had a strong influence on height and diameter growth, with seedling units showing taller plants initially, which shifted to direct-seeded plants in subsequent years. Conversely, the effect of shelters on growth parameters was generally non-significant. Nonetheless, sheltered trees exhibited greater height and diameter than unsheltered trees, particularly in the latter years. Sheltered plants showed an overall faster rate of vertical growth, while unsheltered plants showed faster radial growth.
Źródło:
Journal of Ecological Engineering; 2023, 24, 7; 360--374
2299-8993
Pojawia się w:
Journal of Ecological Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
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
Artykuł
Tytuł:
O Baublisie raz jeszcze...
About Baublis once again...
Autorzy:
Tomusiak, R.
Zarzyński, P.
Powiązania:
https://bibliotekanauki.pl/articles/1009653.pdf
Data publikacji:
2009
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
pomniki przyrody
dab Baublis
historia
Litwa
lesnictwo
drzewa lesne
'baublis'
common oak
monumental tree
lithuania
Opis:
This paper is a kind of addition to four other articles about famous Lithuanian oak−tree called 'Baublis' published in Sylwan, especially those from 1827 and 2002. The first one, written by Dionizy Paszkiewicz was a description of its cut down in 1812. The latter was a scientific estimation of 'Baublis'es' main parameters (trunk circumference, height, volume, age, etc.) basing on facts from the previous article. However, some new data about this tree were found basing on the parameters of unique building made from its trunk that had survived on Lithuania since the beginning of 1880s. The new estimations of this famous oak−tree size are presented.
Źródło:
Sylwan; 2009, 153, 12; 847-851
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł

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