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    Wyświetlanie 1-4 z 4
    Tytuł:
    Effects of wild boar grazing on the yield of summer truffle (Tuscany, Italy)
    Autorzy:
    Salerni, E.
    Gardin, L.
    Baglioni, F.
    Perini, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/67080.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Botaniczne
    Tematy:
    wild boar
    Sus scrofa
    grazing
    yield
    summer
    truffle
    Tuber aestivum
    Quercus cerris
    harvesting
    Tuscany
    Italy
    Opis:
    The research presented here seeks to describe the impact of wild boar to a natural truffle ground of Tuber aestivum Vittad. on Monte Amiata (Tuscany – Italy). Pedoclimatic analyses indicated that the selected area could be considered suitable for the truffle production. Then classification of the vegetation of a Quercus cerris forest was carried out exploring the possibility of the BACI (Before-After-Control-Impact) sampling design. Finally 10 plots were selected, half of which have been fenced. For the first time the impact of wild boar was evaluated by estimating the surface area turned over by its activity. Moreover in each plot the number and weight of summer truffles was performed every 10 days during the fruiting period (June-November 2006-2008). The hypothesis that the presence of Sus scrofa has a strong negative influence on truffle harvesting has been amply confirmed by the data presented here, given the large increase of fruiting bodies of the summer truffle collected in the fenced plots. Consequently the destructive behaviour of the wild boar imply not only an ecological but also an economic damage in areas in which non-wood forest products are an important source of income.
    Źródło:
    Acta Mycologica; 2013, 48, 1
    0001-625X
    2353-074X
    Pojawia się w:
    Acta Mycologica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Biomass of the xerothermic oak ecosystem on a site of community importance, BG0001040 "Zapadna Stara Planina i Predbalkan", Bulgaria
    Autorzy:
    Lyubenova, M.
    Dimitrova, V.
    Georgieva, N.
    Dimitrov, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/52482.pdf
    Data publikacji:
    2014
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Technologii Drewna
    Tematy:
    biomass
    xerothermic plant
    forest ecosystem
    oak
    plant community
    Quercus frainetto-Quercus cerris forest
    Zapadna Stara Planina i Predbalkan area
    Natura 2000 area
    Bulgaria
    Opis:
    The belowground and aboveground biomass was estimated for the tree story, sproutsand seedling regeneration in a representative Quercus frainetto – Quercus cerris ecosystem on “Zapadna Stara planina i Predbalkan”, a Site of Community Importance (SCI). The biomass was measured by destructive sampling (on sample or “model trees” representing three calculated density classes for each species and cut at the stump) of leaves, annual and perennial branches, wood, bark and root components. The belowground (root) biomass was also calculated from a subsample. The data obtained were compared to the results of previous studies and the values on the Bazilevich and Rodin [1971] scale. The ecological status of the forest ecosystem studied and its functional efficiency are discussed based on the study results and specific climate data.
    Źródło:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty; 2014, 57, 192
    1644-3985
    Pojawia się w:
    Drewno. Prace Naukowe. Doniesienia. Komunikaty
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    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
    Artykuł
    Tytuł:
    Wzmocnienie desorpcyjne jako podstawa oceny jakości drewna dębu szypułkowego (Quercus robur L.) i dębu burgundzkiego (Quercus cerris L.)
    Desorption strengthening as a basis for the assessment of wood quality of pedunculate oak (Quercus robur L.) and Turkey oak (Quercus cerris L.)
    Autorzy:
    Szymański, M.
    Szykowny, T.
    Pazdrowski, W.
    Nawrot, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/994476.pdf
    Data publikacji:
    2013
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    drzewa lesne
    dab szypulkowy
    Quercus robur
    dab burgundzki
    Quercus cerris
    drewno debowe
    jakosc
    gestosc drewna
    gestosc umowna
    wytrzymalosc na sciskanie wzdluz wlokien
    wzmocnienie desorpcyjne
    conventional wood density
    compressive strength along the grain
    basic strength
    desorption strengthening
    wood quality
    Opis:
    The analysis was conducted on the wood of two 100−year−old oak species that grew in the riparian forest conditions. The aim of the study was to determine the effect of tree species on conventional wood density, compressive strength along the grain with a moisture content of 12% and above 30% and desorption strengthening. It was found that wood of both oak species differed in density, compressive strength along the grain and desorption strengthening. These differences should be taken into account in the processing and use of timber harvested in the prescribed cuts.
    Źródło:
    Sylwan; 2013, 157, 11; 811-816
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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