نتایج جستجو برای: eastern sagebrush
تعداد نتایج: 87203 فیلتر نتایج به سال:
The sagebrush biome within the western United States has been reshaped by disturbances, management, and changing environmental conditions. As a result, cover configuration have varied over space time, influencing processes species that rely on contiguous, connected sagebrush. Previous studies documented changes in cover, but we know little about how connectivity of changed time across biome. We...
The invasive grass Bromus tectorum fuels fires, displaces native species, and reduces wildlife habitat on sagebrush steppe throughout the western United States. Recently, it has spread from the Great Basin Desert into higher elevations of the eastern Sierra Nevada, where it coexists with natives but has not yet altered fire regimes. We evaluated effects of a springtime water pulse (+10 mm) in a...
For the past several years, USGS has taken a multi-faceted approach to investigating the condition and trends in sagebrush steppe ecosystems. This recent effort builds upon decades of work in semi-arid ecosystems providing a specific, applied focus on the cumulative impacts of expanding human activities across these landscapes. Here, we discuss several on-going projects contributing to these ef...
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