Showing papers by "Julia A. Klein published in 2012"
University of British Columbia1, Grand Valley State University2, University of Gothenburg3, University of Sheffield4, Royal Swedish Academy of Sciences5, St. John's University6, University of Tromsø7, VU University Amsterdam8, Arizona State University9, American Museum of Natural History10, United States Forest Service11, Agricultural University of Iceland12, University of California, Berkeley13, University of Alberta14, University of Melbourne15, University of Iceland16, Norwegian University of Life Sciences17, Colorado State University18, Hokkaido University19, University of Copenhagen20, Florida International University21, University of Saskatchewan22, Pennsylvania State University23, University of Manchester24, Aarhus University25, Marine Biological Laboratory26, Finnish Forest Research Institute27, La Trobe University28, Michigan State University29, University of Alaska Anchorage30, University of Stirling31
TL;DR: In this article, a synthesis of 61 experimental warming studies, of up to 20 years duration, in tundra sites worldwide, was used to understand the sensitivity of tundras vegetation to climate warming and to forecast future biodiversity and vegetation feedbacks to climate.
Abstract: 35 Abstract Understanding the sensitivity of tundra vegetation to climate warming is critical to forecasting future biodiversity and vegetation feedbacks to climate. In situ warming experiments accelerate climate change on a small scale to forecast responses of local plant communities. Limitations of this approach include the apparent site-specificity of results and uncertainty about the power of short-term studies to anticipate longer term change. We address these issues with a synthesis of 61 experimental warming studies, of up to 20 years duration, in tundra sites worldwide. The response of plant groups to warming often differed with ambient summer temperature, soil moisture and experimental duration. Shrubs increased with warming only where ambient temperature was high, whereas graminoids increased primarily in the coldest study sites. Linear increases in effect size over time were frequently observed. There was little indication of saturating or accelerating effects, as would be predicted if negative or positive vegetation feedbacks were common. These results indicate that tundra vegetation exhibits strong regional variation in response to warming, and that in vulnerable regions, cumulative effects of long-term warming on tundra vegetation - and associated ecosystem consequences - have the potential to be much greater than we have observed to date.
830 citations
University of British Columbia1, Grand Valley State University2, University of Gothenburg3, Université du Québec à Trois-Rivières4, VU University Amsterdam5, Arizona State University6, Umeå University7, Moscow State University8, Environment Canada9, United States Department of Agriculture10, University of California, Berkeley11, University of Alberta12, University of Texas at El Paso13, University of Saskatchewan14, University of Iceland15, United States Fish and Wildlife Service16, Norwegian University of Life Sciences17, Colorado State University18, Hokkaido University19, University of Copenhagen20, Florida International University21, Swiss Federal Institute for Forest, Snow and Landscape Research22, Aarhus University23, Marine Biological Laboratory24, University of California, Davis25, University of Oulu26, La Trobe University27, Michigan State University28, University of Alaska Anchorage29
TL;DR: In this paper, remote sensing data indicate that contemporary climate warming has already resulted in increased productivity and increased productivity in the tundra biome (Tundra Tundra Bi biome).
Abstract: Temperature is increasing at unprecedented rates across most of the tundra biome(1). Remote-sensing data indicate that contemporary climate warming has already resulted in increased productivity ov ...
782 citations
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1 citations