Polar Bears in a Warming Climate
نویسندگان
چکیده
منابع مشابه
Effects of climate change on polar bears.
In this article, we review the effects on polar bears of global warming that have already been observed, and try to evaluate what may happen to the polar bears in the future. Many researchers have predicted a wide range of impacts of climate change on polar bear demography and conditions. A predicted major reduction in sea ice habitat will reduce the availability of ice associated seals, the ma...
متن کاملAnthropogenic flank attack on polar bears: interacting consequences of climate warming and pollutant exposure
Bjørn M. Jenssen*, Gro D. Villanger, Kristin M. Gabrielsen, Jenny Bytingsvik, Thea Bechshoft, Tomasz M. Ciesielski, Christian Sonne and Rune Dietz 1 Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway 2 Department of Arctic Technology, The University Centre in Svalbard, Longyearbyen, Norway 3 Division of Mental Health, Department of Child Development and Men...
متن کاملPossible Effects of Climate Warming on Selected Populations of Polar Bears (Ursus maritimus) in the Canadian Arctic
Polar bears depend on sea ice for survival. Climate warming in the Arctic has caused significant declines in total cover and thickness of sea ice in the polar basin and progressively earlier breakup in some areas. Inuit hunters in the areas of four polar bear populations in the eastern Canadian Arctic (including Western Hudson Bay) have reported seeing more bears near settlements during the ope...
متن کاملPolar bears of western Hudson Bay and climate change: Are warming spring air temperatures the ‘‘ultimate’’ survival control factor?
Long-term warming of late spring (April–June) air temperatures has been proposed by Stirling et al. [Stirling, I., Lunn, N.J., Iacozza, J., 1999. Long-term trends in the population ecology of polar bears in western Hudson Bay in relation to climatic change. Arctic 52, 294– 306] as the ‘‘ultimate’’ factor causing earlier sea-ice break-up around western Hudson Bay (WH) that has, in turn, led to t...
متن کاملHarvesting wildlife affected by climate change: a modelling and management approach for polar bears
The conservation of many wildlife species requires understanding the demographic effects of climate change, including interactions between climate change and harvest, which can provide cultural, nutritional or economic value to humans.We present a demographic model that is based on the polar bear Ursus maritimus life cycle and includes density-dependent relationships linking vital rates to envi...
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ژورنال
عنوان ژورنال: Integrative and Comparative Biology
سال: 2004
ISSN: 1540-7063,1557-7023
DOI: 10.1093/icb/44.2.163