نتایج جستجو برای: in highland watersheds
تعداد نتایج: 16977197 فیلتر نتایج به سال:
Tibetan sheep have lived on the Tibetan Plateau for thousands of years; however, the process and consequences of adaptation to this extreme environment have not been elucidated for important livestock such as sheep. Here, seven sheep breeds, representing both highland and lowland breeds from different areas of China, were genotyped for a genome-wide collection of single-nucleotide polymorphisms...
Hurricanes are infrequent but influential disruptors of ecosystem processes in the southeastern Atlantic and Gulf coasts. Every southeastern forested wetland has the potential to be struck by a tropical cyclone. We examined the impact of Hurricane Hugo on two paired coastal South Carolina watersheds in terms of streamflow and vegetation dynamics, both before and after the hurricane’s passage in...
Introduction The impacts of watershed deforestation on lacustrine environments can dramatically affect the productivity of the littoral zone and strongly influence sedimentation rates. Many watersheds flowing into Lake Tanganyika (3°18’8°47’S, 29°05’ 31°18’E) from northern Kigoma region, Tanzania are currently experiencing the effects of deforestation to accommodate high human population densit...
Water quality regulation and litigation have elevated the awareness and need for quantifying water quality and source contributions in watersheds across the USA. In the present study, the regression method, which is typically applied to large (perennial) rivers, was evaluated in its ability to estimate constituent loads (NO(3)-N, total N, PO(4)-P, total P, sediment) on three small (ephemeral) w...
The range of 3 ø by 3 ø regional slopes of the earth and Venus is similar (approximately 0.0ø-2.4ø); however, the surface distribution of these values differs significantly. On earth, cratonic and abyssal plains form extensive regions of 0.0 ø slope. Within these regions a variety of features (mid-ocean ridges, volcanic island chains, subduction zones, and folded mountains) have regional slope ...
OBJECTIVES Native Andean ancestry gives partial protection from reduced birthweight at high altitude in the Andes compared with European ancestry. Whether Andean ancestry is also associated with body proportions and greater postnatal body size at altitude is unknown. Therefore, we tested whether a greater proportion of Andean ancestry is associated with stature and body proportions among Peruvi...
Future climate and land-use changes and growing human populations may reduce the abundance of water resources relative to anthropogenic and ecological needs in the Northeast and Midwest (U.S.). We used output from WaSSI, a water accounting model, to assess potential changes between 2010 and 2060 in (1) anthropogenic water stress for watersheds throughout the Northeast and Midwest and (2) native...
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