Filters: Tags: tundra (X)134 results (134ms)
We investigated experimental warming and simulated grazing (clipping) effects on rangeland quality, as indicated by vegetation production and nutritive quality, in winter-grazed meadows and summer-grazed shrublands on the Tibetan Plateau, a rangeland system experiencing climatic and pastoral land use changes. Warming decreased total aboveground net primary productivity (ANPP) by 40 g.m?�.yr?� at the meadow habitats and decreased palatable ANPP (total ANPP minus non-palatable forb ANPP) by 10 g.m?�.yr?� at both habitats. The decreased production of the medicinal forb Gentiana straminea and the increased production of the non-palatable forb Stellera chamaejasme with warming also reduced rangeland quality. At the shrubland...
Winter habitat use by ptarmigan, snowshoe hares, red foxes, and river otters in the boreal forest - Tundra transition zone of western Quebec
Observation and estimation of daily actual evapotranspiration and evaporation on a glacierized watershed at the headwater of the Urumqi River, Tianshan, China
Early and Late Winter CO sub(2) Efflux from Arctic Tundra in the Kuparuk River Watershed, Alaska, U.S.A.
Assessment of tundra degradation resulting from the presence of a field camp in Kongsfjorden, Svalbard
Final Report for Detection of Climate-Linked Distributional Shifts of Breeding Waterbirds Across North America
The global mean surface temperature increased 0.85°C during the period 1880 – 2012. Some climate models predict an additional warming of up 2 to 4 ◦ C over the next 100 years for the primary breeding grounds for North American ducks. Such an increase has been predicted to reduce mid - continent breeding duck populations by >70%. Managing continental duck populations in the face of climate change requires understanding how waterfowl have responded to historical spatio - temporal climatic variation. However, such responses to climate may be obscured by how ducks respond to variation in land cover. We estimated effects of climate on settlement patterns of breeding ducks in the Prairie - Parkland Region (PPR), boreal...
Global carbon dynamics of higher latitude forests during an anticipated climate change: ecophysiological versus biome-migration view
Simulating heterogeneous vegetation in climate models. Identifying when secondary vegetation becomes important
What determines the population density and reproductive success of rough-legged buzzards, Buteo lagopus, in the Siberian tundra?
Winter production of CO sub(2) and N sub(2)O from alpine tundra: Environmental controls and relationship to inter-system C and N fluxes
Satellite-derived vegetation index and cover type maps for estimating carbon dioxide flux for arctic tundra regions
Characteristics of energy and water budgets over wet sedge and tussock tundra ecosystems at North Slope in Alaska