نتایج جستجو برای: quercus spp

تعداد نتایج: 57431  

2010
JAMES H. CANE JERRY A. PAYNE

Ann. Entomol. Soc. Am. 81(3): 419-427 (1988) ABSTRACT The anthophorid bee, Hahropoda (=Emphoropsis [R. W. Brooks, personal communication]) laboriosa (F.), is a locally abundant, vernal, univoltine species. It flies from February through April in Georgia and Alabama. In these states, females are oligolectic on Vaccinium spp., particularly V. ashei Reade and V. corymbosum L., with Gelsemium sempe...

2001
James M. Dyer

In 1787, the U.S. Congress authorized the sale of the “Ohio Company Purchase”, ca. 5000 km2 in Appalachian Ohio. The land was surveyed using a township and range system shortly thereafter. Data on >5600 witness trees were transcribed from the survey records, and witness tree locations were plotted on a digital map. This information was used to evaluate presettlement forest composition and struc...

Journal: :Remote Sensing 2023

One of the most determining factors in forest fire behaviour is to characterize fuel attributes. We investigated a complex Mediterranean type—mountainous Abies pinsapo–Pinus–Quercus–Juniperus with distinct structures, such as broadleaf and needleleaf forests—to integrate field data, low density Airborne Laser Scanning (ALS), multispectral satellite data for estimating The three-step procedure c...

Journal: :Poultry science 2011
T Sirirak S P Voravuthikunchai

The antibacterial activity of ethanolic extracts of selected Thai medicinal plants (Rhodomyrtus tomentosa (Aiton) Hassk., Quercus infectoria G. Olivier, and Eleutherine americana Merr.) against Campylobacter spp. was investigated. Sixty-five Campylobacter, including 39 isolates from humans and 26 isolates from chicken samples, were tested. Reference Campylobacter spp. that are commonly encounte...

Journal: :Molecular ecology 1998
P Taberlet L Fumagalli A G Wust-Saucy J F Cosson

The Quaternary cold periods in Europe are thought to have heavily influenced the amount and distribution of intraspecific genetic variation in both animals and plants. The phylogeographies of 10 taxa, including mammals (Ursus arctos, Sorex spp., Crocidura suaveolens, Arvicola spp.), amphibians (Triturus spp.), arthropods (Chorthippus parallelus), and plants (Abies alba, Picea abies, Fagus sylva...

Journal: :دانش گیاه پزشکی ایران 0
سید اکبر خداپرست فاطمه فتحی مهرداد عباسی محمدرضا میرزائی

in the framework of a study on the powdery mildew fungi in iran, several infected plant specimens were collected from around the country during 2001-2009. based on the results of the study erysiphe quercicola on quercus sp. and e. malvae on malva sp., golovinomyces ambrosiae on helianthus spp., golovinomyces fischeri on senecio glaucus, are the newly reported for iranian mycobiota. in addition,...

سید اکبر خداپرست, فاطمه فتحی محمدرضا میرزائی مهرداد عباسی

در ادامه مطالعه قارچ‌های تیره Erysiphaceae، نمونه‌های مختلفی که از نقاط مختلف کشور طی سال‌های 1388-1380 جمع‌آوری شده بودند مطالعه شد. بر اساس نتایج به دست آمده گونه‌های E. malvae روی Malva sp.، Erysiphe quercicola روی Quercus sp.، Golovinomyces ambrosiae روی Helianthus spp. وGolovinomyces fischeri روی Senecio glaucus برای اولین بار از ایران شرح داده شده است. همچنین نمونه‌های متعددی از گونه Golo...

Journal: :Journal of wildlife diseases 2008
Ellen S Martinsen Benjamin J Blumberg Rebecca J Eisen Jos J Schall

During spring-summer 2003-2004, the avian community was surveyed for hemosporidian parasites in an oak (Quercus spp.) and madrone (Arbutus spp.) woodland bordering grassland and chaparral habitats at a site in northern California, a geographic location and in habitat types not previously sampled for these parasites. Of 324 birds from 46 species (21 families) sampled (including four species not ...

Journal: :Forests 2021

Accurate information on tree species is in high demand for forestry management and further investigations biodiversity environmental monitoring. Over regional or large areas, distinguishing at resolutions faces the challenges of a lack representative features computational power. A novel methodology was proposed to delineate explicit spatial distribution six dominant (Pinus tabulaeformis, Querc...

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