Demographic response of tundra small mammals to a snow fencing experiment
نویسنده
چکیده
F. Bilodeau ([email protected]) and G. Gauthier, Dept de Biologie and Centre d ’ É tudes Nordiques (CEN), Univ. Laval, 1045 Avenues de la M é decine, Qu é bec City, QC, G1V 0A6, Canada. – D. G. Reid, Wildlife Conservation Society Canada, 39 Harbottle Road, Whitehorse, YT, Y1A 5T2, Canada. – C. J. Krebs and A. J. Kenney, Dept of Zoology, Univ. of British Columbia, Vancouver, BC, V6T 1Z4, Canada. – D. Berteaux,Chaire de recherche du Canada en conservation des é cosyst è mes nordiques and CEN, Univ. du Qu é bec à Rimouski (UQAR), Rimouski, QC, G5L 3A1, Canada.
منابع مشابه
Vegetation responses in Alaskan arctic tundra after 8 years of a summer warming and winter snow manipulation experiment
We used snow fences and small (1m) open-topped fiberglass chambers (OTCs) to study the effects of changes in winter snow cover and summer air temperatures on arctic tundra. In 1994, two 60m long, 2.8m high snow fences, one in moist and the other in dry tundra, were erected at Toolik Lake, Alaska. OTCs paired with unwarmed plots, were placed along each experimental snow gradient and in control a...
متن کاملModeling the Observed Microwave Emission from Shallow Multi-Layer Tundra Snow Using DMRT-ML
The observed brightness temperatures (Tb) at 37 GHz from typical moderate density dry snow in mid-latitudes decreases with increasing snow water equivalent (SWE) due to volume scattering of the ground emissions by the overlying snow. At a certain point, however, as SWE increases, the emission from the snowpack offsets the scattering of the sub-nivean emission. In tundra snow, the Tb slope rever...
متن کاملShrub canopies influence soil temperatures but not nutrient dynamics: An experimental test of tundra snow–shrub interactions
Shrubs are the largest plant life form in tundra ecosystems; therefore, any changes in the abundance of shrubs will feedback to influence biodiversity, ecosystem function, and climate. The snow-shrub hypothesis asserts that shrub canopies trap snow and insulate soils in winter, increasing the rates of nutrient cycling to create a positive feedback to shrub expansion. However, previous work has ...
متن کاملEffects on the structure of Arctic ecosystems in the short- and long-term perspectives.
Species individualistic responses to warming and increased UV-B radiation are moderated by the responses of neighbors within communities, and trophic interactions within ecosystems. All of these responses lead to changes in ecosystem structure. Experimental manipulation of environmental factors expected to change at high latitudes showed that summer warming of tundra vegetation has generally le...
متن کاملEffects of Simulated Climate Change on Plant Phenology and Nitrogen Mineralization in Alaskan Arctic Tundra
This study was part of the International Tundra Experiment (ITEX) and examined the effects of increased winter snow depth and decreased growing season length on the phenology of four arctic plant species (Betula nana, Salix pulchra, Eriophorum vaginatum, and Vaccinium vitis-idaea) and seasonal nitrogen availability in arctic snowbed communities. Increased snow depth had a large effect on the te...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2013