نتایج جستجو برای: oak decline
تعداد نتایج: 100201 فیلتر نتایج به سال:
The effects of white-tailed deer browsing on species richness, density and height of forest regeneration were examined on three oak dominated forests in southern Ohio. Each study site consisted of four 20 ha silvicultural treatments, resulting in 12 experimental units. Mean estimated post harvest deer densities were 6 deer km. Three pairs of plots were established within each treatment at each ...
Bacterial leaf scorch is caused by Xylella fastidiosa Wells et al. The pathogen causes chronic leaf scorch and decline in elm, oak, sycamore, and maple. X. fastidiosa has a wide host range and is responsible for many other serious diseases including Pierce's disease of grape, phony disease of peach, and citrus variegated chlorosis. Its role in shade tree disorders has only recently been recogni...
Abstract Background Mature oak ( Quercus spp.) and hickory Carya trees are gradually being replaced by more shade-tolerant tree species across the eastern U.S., likely due to fire suppression increased precipitation. Oaks hickories highly valuable wildlife; therefore, studying their mortality patterns can provide information on longevity of habitat quality for many animal species. Oak has most ...
BACKGROUND Oak moss absolute, an extract from the lichen Evernia prunastri, is a valued perfume ingredient but contains extreme allergens. OBJECTIVES To compare the elicitation properties of two preparations of oak moss absolute: 'classic oak moss', the historically used preparation, and 'new oak moss', with reduced contents of the major allergens atranol and chloroatranol. PATIENTS/MATERIA...
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