Polar Bears and Seals in the Eastern Beaufort Sea and Amundsen Gulf: A Synthesis of Population Trends and Ecological Relationships over Three Decades

By Ian Stirling. 2002

190 citations recorded by the source corpus.

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Citations in the corpus

Observations of mortality associated with extended open-water swimming by polar bears in the Alaskan Beaufort Sea (2006, background): “Although a number of published papers have discussed implications of climate change on polar bears (e.g., Stirling and Derocher 1993; Stirling et al. 1999; Norris et al. 2002; Stirling 2002; Derocher et al. 2004), to date, mortality due to swimming has not been identified as an associated risk.”
POLAR BEAR DIETS AND ARCTIC MARINE FOOD WEBS: INSIGHTS FROM FATTY ACID ANALYSIS (2008, background): “These periods of heavy ice and low seal abundance were associated with declines in polar bear reproduction (Stirling et al. 1977a, Stirling and Lunn 1997, Stirling 2002) and it is possible that polar bear diets may have also changed.”
VARIABILITY IN THE BLUBBER FATTY ACID COMPOSITION OF RINGED SEALS (PHOCA HISPIDA) ACROSS THE CANADIAN ARCTIC (2007, background): “Changes in ringed seal populations can reflect large-scale changes in ice conditions and/or food supply (e.g., Stirling 2002), and recent declines in ringed seal reproduction may be a consequence of earlier sea ice breakup, decreasing snow cover, and likely other unknown ecological factors…”
Prokaryotic community structure and heterotrophic production in a river-influenced coastal arctic ecosystem (2006, background): “The physical and geochemical oceanography of this region is well documented (Carmack & Macdonald 2002), and several reports exist concerning the upper trophic levels (Dickson & Gilchrist 2002, Harwood & Smith 2002, Stirling 2002).”
Change in the Beaufort Sea ecosystem: Diverging trends in body condition and/or production in five marine vertebrate species (2015, background): “Temporary declines in seal productivity in the southeast Beaufort Sea have been documented in the past, coincidentally with declines in body condition and reproductive output of polar bears in the 1970s (Kingsley, 1979; Stirling, 2002).”
Quantifying the sensitivity of Arctic marine mammals to climate-induced habitat change. (2008, background): “In the mid-1960s, 1970s, and 1980s, reproductive failures in ringed seals in the Beaufort Sea and Amundsen Gulf were associated with severe ice conditions (Stirling and Archibald 1977, Smith and Stirling 1978, Stirling et al. 1982, Smith 1987, Kingsley and Byers 1998, Stirling 2002).”
Population ecology of polar bears at Svalbard, Norway (2005, background): “: +1-780-4925570 Fax: +1-780-4929234 A. E. Derocher Norwegian Polar Institute, Tromsø, 9296, Norway The best studied polar bear populations are found in the Beaufort Sea, north of Alaska and western Canada, and in western Hudson Bay (Amstrup et al. 1986; Stirling et al. 1999; Stirling 2002).”
Variation in winter diet of southern Beaufort Sea polar bears inferred from stable isotope analysis (2007, unknown): “Although the southern Beaufort Sea population of polar bears has been estimated to be between 1500 and 2500 individuals (Amstrup et al. 1986, 2001; Stirling 2002; Regehr et al. 2006), these include polar bears captured along both the Canadian and the Alaskan portions of the Beaufort Sea.”
Marine mammals as ecosystem sentinels (2008, background): “Not surprisingly, species dependent on sea ice for feeding and breeding, such as the polar bear (Ursus maritimus) and the ringed seal (Phoca hispida), provide the clearest examples of sensitivity to environmental change (Derocher et al. 2004; Stirling 2002).”