Assessing the risk of climate maladaptation for Canadian polar bears.

Autor: Rivkin LR; Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.; Polar Bears International, Bozeman, Montana, USA.; San Diego Zoo Wildlife Alliance, Escondido, California, USA., Richardson ES; Wildlife Research Division, Science and Technology Branch, Environment and Climate Change Canada, Winnipeg, Manitoba, Canada., Miller JM; Polar Bears International, Bozeman, Montana, USA.; San Diego Zoo Wildlife Alliance, Escondido, California, USA.; MacEwan University, Edmonton, Alberta, Canada., Atwood TC; U.S. Geological Survey, Alaska Science Center, Anchorage, Alaska, USA., Baryluk S; Department of Environment and Climate Change, Government of the Northwest Territories, Inuvik, Northwest Territories, Canada., Born EW; Greenland Institute of Natural Resources, Nuuk, Greenland., Davis C; Department of Biological Sciences, University of Alberta, Edmonton, Alberta, Canada., Dyck M; Department of Environment, Government of Nunavut, Igloolik, Nunavut, Canada., de Greef E; Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada., Laidre KL; Polar Science Center, Applied Physics Laboratory, University of Washington, Seattle, Washington, USA., Lunn NJ; Wildlife Research Division, Science and Technology Branch, Environment and Climate Change Canada, Edmonton, Alberta, Canada., McCarthy S; Wildlife Division, Department of Fisheries, Forestry and Agriculture, Government of Newfoundland and Labrador, Happy Valley-Goose Bay, Newfoundland and Labrador, Canada., Obbard ME; Wildlife Research and Development Section, Ontario Ministry of Natural Resources, Trent University, Peterborough, Ontario, Canada.; Environmental and Life Sciences Graduate Program, Trent University, Peterborough, Ontario, Canada., Owen MA; San Diego Zoo Wildlife Alliance, Escondido, California, USA., Pilfold NW; San Diego Zoo Wildlife Alliance, Escondido, California, USA., Roberto-Charron A; Department of Environment, Government of Nunavut, Igloolik, Nunavut, Canada., Wiig Ø; Natural History Museum, University of Oslo, Oslo, Norway., Wilder AP; San Diego Zoo Wildlife Alliance, Escondido, California, USA., Garroway CJ; Department of Biological Sciences, University of Manitoba, Winnipeg, Manitoba, Canada.
Jazyk: angličtina
Zdroj: Ecology letters [Ecol Lett] 2024 Aug; Vol. 27 (8), pp. e14486.
DOI: 10.1111/ele.14486
Abstrakt: The Arctic is warming four times faster than the rest of the world, threatening the persistence of many Arctic species. It is uncertain if Arctic wildlife will have sufficient time to adapt to such rapidly warming environments. We used genetic forecasting to measure the risk of maladaptation to warming temperatures and sea ice loss in polar bears (Ursus maritimus) sampled across the Canadian Arctic. We found evidence for local adaptation to sea ice conditions and temperature. Forecasting of genome-environment mismatches for predicted climate scenarios suggested that polar bears in the Canadian high Arctic had the greatest risk of becoming maladapted to climate warming. While Canadian high Arctic bears may be the most likely to become maladapted, all polar bears face potentially negative outcomes to climate change. Given the importance of the sea ice habitat to polar bears, we expect that maladaptation to future warming is already widespread across Canada.
(© 2024 The Author(s). Ecology Letters published by John Wiley & Sons Ltd.)
Databáze: MEDLINE
Externí odkaz: