Movements and distribution of polar bears in the Beaufort Sea

By Steven C. Amstrup, G. Durner, Ian Stirling, N. Lunn, F. Messier. 2000

163 citations recorded by the source corpus.

Subfields: Atmospheric Science, Ecology, General Health Professions

View Paper: https://www.semanticscholar.org/paper/fd6a9e41e4f1da164bb5d4dbe0a7ab8f019c70be

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Citations in the corpus

Polar Bears and Seals in the Eastern Beaufort Sea and Amundsen Gulf: A Synthesis of Population Trends and Ecological Relationships over Three Decades (2002, background): “The later addition of data from tracking of females with satellite radios (Bethke et al., 1996; Amstrup et al., 2000) further confirmed the separation of the Northern Beaufort and Southern Beaufort populations.”
Importance of fast ice and glacier fronts for female polar bears and their cubs during spring in Svalbard, Norway (2012, unknown): “The polar bear’s annual cycle is characterised by a spring/summer season with very active foraging, followed by a less active period in autumn and winter (Messier et al. 1992, Amstrup et al. 2000, Ferguson et al. 2001).”
Variation in winter diet of southern Beaufort Sea polar bears inferred from stable isotope analysis (2007, unknown): “Individuals frequently move over 50 km per day, over ice, water, and along shorelines, in search of prey and of optimal hunting conditions near open leads and in active zones of the polar ice pack (Garner et al. 1990; Amstrup et al. 2000; Ferguson et al. 2000; Durner et al. 2004).”
POLAR BEAR DIETS AND ARCTIC MARINE FOOD WEBS: INSIGHTS FROM FATTY ACID ANALYSIS (2008, background): “Mark– recapture and telemetry data demonstrate that polar bears restrict their movements and reproductive activities to within the subpopulation regions (e.g., Stirling et al. 1999, Amstrup et al. 2000, Taylor et al. 2001, Mauritzen et al. 2002).”
Landward and eastward shift of Alaskan polar bear denning associated with recent sea ice changes (2007, background): “Implications to population ecology Historically, most polar bears throughout the polar basin including the Beaufort Sea reside on the sea ice throughout the summer (Amstrup et al. 2000; Amstrup 2003).”
Effects of sea ice extent and food availability on spatial and temporal distribution of polar bears during the fall open-water period in the Southern Beaufort Sea (2008, background): “... BaYn Bay, includes spending up to 4 months of the year on land during the fall open-water period (Stirling et al. 1977; Derocher et al. 1993; Ferguson et al. 1997, 2000), polar bears in Alaskan populations, including the Southern Beaufort Sea (SBS) and Chukchi Sea, and other open basin populatio”
Space-use strategies of female polar bears in a dynamic sea ice habitat (2001, background): “Previous studies have revealed pronounced variation in polar bears’ space use, with annual range sizes varying by a factor of 300 within populations (Wiig 1995; Ferguson et al. 1999; Amstrup et al. 2000).”
Quantifying the sensitivity of Arctic marine mammals to climate-induced habitat change. (2008, background): “Polar bear home ranges are up to 600 000 km2 but vary greatly between individuals (Garner et al. 1990, Wiig 1995, Born et al. 1997b, Ferguson et al. 1999, Amstrup et al. 2000, Mauritzen et al. 2001, Wiig et al. 2003).”
Polar bears in the Beaufort Sea: A 30-year mark-recapture case history (2001, background): “We assumed at the start of this study that the polar bears of the SBS were members of one population extending from approximately Wainwright to Tuktoyaktuk (Treseder and Carpenter 1989; Amstrup, Durner, Stirling, Lunn, and Messier 2000 ).”
Observations of mortality associated with extended open-water swimming by polar bears in the Alaskan Beaufort Sea (2006, methodology): “The BWASP is based on a set of random field transects within established geographic blocks overlapping or near Chukchi and Beaufort Sea lease sale areas offshore of the north Alaskan coast (140–157� W and south of 72� N, Fig. 1). The study area roughly overlaps a ‘‘core area’’ of polar bear activity”
Forecasting the relative influence of environmental and anthropogenic stressors on polar bears (2016, background): “Bears in the Divergent historically spent ≤ 7% of their time on land (Amstrup et al. 2000, Amstrup 2003), but with recent prolonged sea ice retreats more bears now come ashore for longer periods during summer (Ovsyanikov and Menyushina 2007, Schliebe et al. 2008).”
Seasonal and annual movement patterns of polar bears on the sea ice of Hudson Bay (2006, unknown): “However, reproductive status did not affect movement rate in Hudson Bay, whereas in the southern Beaufort Sea, solitary females had higher movement rates than females with yearlings ( Amstrup et al. 2000 ).”