نتایج جستجو برای: carpinus
تعداد نتایج: 375 فیلتر نتایج به سال:
Arboreal spiders in deciduous and coniferous trees were investigated on their distribution and diversity. Insecticidal knock-down was used to comprehensively sample spiders from 175 trees from 2001 to 2003 in the Białowieża forest and three remote forests in Poland. We identified 140 species from 9273 adult spiders. Spider communities were distinguished between deciduous and coniferous trees. T...
PA1 01 Do biochemical and geochemical influences of acidic deposition affect dendroclimatic stability? PA2 Reconstruction of past climate variations: a challenge for the present and future PA2 10 Dendrochronological analysis of selected spruce stands in the Drahany highlands PA2 14 Studies with the Finnish over 7650-year pine chronology PA3 Tree rings and insects, diseases and anthropogenic fac...
Microclimate in different positions on a host plant has strong direct effects on herbivores. But little is known about indirect effects due to changes of leaf traits. We hypothesized that herbivory increases from upper canopy to lower canopy and understory due to a combination of direct and indirect pathways. Furthermore, we hypothesized that herbivory in the understory differs between tree spe...
Now a days the paper factories, which because of environmental issues and lack of forest sources, use waste papers, need to identify fibers in raw materials to improve quality of recycled papers. In order to evaluate feasibility of fibers identification, papers of 9 Iranian important factories (12 different papers) were sampled and the frequency of identified species in papers was recorded in m...
To advance our understanding of host effects on the community structure of ectomycorrhizal fungi (EMF), EMF communities were compared among different host species, genera and families in two mixed conifer-broadleaf forests in Japan. Using molecular identification methods we examined EMF root tips of eight coexisting species belonging to six genera (three families): Abies and Tsuga (Pinaceae), B...
Diversity and species composition of endophytic fungi on leaves of 11 tree 10 species in Betulaceae were studied, with reference to climatic, tree species, and seasonal 11 variations. A total of 186 fungal isolates were obtained from 190 leaves collected in a 12 subalpine, a cool temperate, and a subtropical forest in Japan and were divided into 46 13 operational taxonomic units (OTUs) accordin...
گونهی ممرز از عناصر مهم جنگلهای هیرکانی است و بیشترین پراکنش در میان گونههای این جنگلها مربوط به آن است.بنابراین، مطالعات جامع در زمینهی شناسایی فنوتیپهای آن بسیار ضروری است.به تأیید اکثر محققان، کارآمدترین صفت برای شناسایی و رستهبندی ممرز صفات میوه و براکتهی آن است.به همین دلیل، در این تحقیق سعی شده است فنوتیپهای مختلف آن با استفاده از 26 صفت بذر و براکتهی آن شناسایی شود. در ابتدا با...
A magyarországi hosszú lejáratú erdészeti tartamkísérleti hálózatot 1962-ben alapították Solymos Rezső irányításával, azóta az Erdészeti Tudományos Intézet folyamatosan fenntartja a és vizsgálja adatait. hálózat fenntartásának alapvető céljai változatlanok annak megalapítása óta. Elsődleges célja, hogy megfelelő bázist nyújtson erdőművelési fatermési kutatásoknak Magyarországon. kísérleti bükk ...
Since the early 2000s, reports on declining hornbeam trees (Carpinus betulus) are spreading in Europe. Two fungi involved decline phenomenon: One is Anthostoma decipiens, but other etiological agent has not been identified yet. We examined morphology, phylogenetic position, and pathogenicity of yellow fungal isolates obtained from Austria, Georgia Switzerland, compared data with disease norther...
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