نتایج جستجو برای: vegetation understory
تعداد نتایج: 49366 فیلتر نتایج به سال:
Over recent years, rural abandonment and climate change have challenged grazed wooded landscapes in Mediterranean mountain regions. Fire hazard management procedures such as grazing, prescribed burning, or mechanical clearing must be adjusted to the new socioeconomic environmental situation according context circumstances of each territory. This study contributes adjusting vegetation techniques...
Pest spillover from wildlands to farms can create conflict between habitat conservation and agricultural production. For example, the key economic pest of hazelnuts in Oregon’s Willamette Valley is filbertworm (Cydia latiferreana), a moth hosted by native Oregon white oak (Quercus garryana). Oak near hazelnut orchards sustain source populations that compound load throughout growing season. This...
Grazing and browsing by large ungulates can have a strong effect on habitat composition structure. Associated effects be reduction in the abundance of palatable tree species alter understory properties, thereby affecting complexity. Changes structure complexity turn affect arthropod predation pressure, as predators are strongly influenced characteristics. This may increasingly important product...
planting shrub seedlings under oil mulches has frequently been used for stabilizing mobile sands in iran for during the last three decades. sandy desert of samad abad, sarakhs, northeast iran, has been fixed by cultivating seedling of haloxylon aphyllum under the oil mulches. therefore this study was designed to investigate the effects of the sand fixation project on soil and vegetation propert...
ELLIOTT, K. J. AND J. M. VOSE (Coweeta Hydrologic Laboratory, Southern Research Station, USDA Forest Service, Otto, NC 28763). Effects of prescribed fire in mixed oak forests in the Southern Appalachians: vegetation response. J. Torrey Bot. Soc. 137: 49–66. 2010.—We examined vegetation responses to prescribed fire on three mixed-oak sites located in the Blue Ridge Physiographic province of the ...
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