Changes in land distribution of polar bears in western Hudson Bay

Arctic

Volumn 63, Issue 2, 2010, Pages 206-212

  Towns, Lindsay ^a   Derocher, Andrew E ^a   Stirling, Ian ^a,b   Lunn, Nick J ^b  

^a UNIVERSITY OF ALBERTA   (Canada)

^b ENVIRONMENT CANADA   (Canada)

Author keywords

Distribution; Polar bear; Population structure; Sea ice breakup; Temporal trends; Ursus maritimus; Western Hudson Bay

Indexed keywords

AGE CLASS; BEAR; ICE BREAKUP; LAND COVER; POPULATION DISTRIBUTION; POPULATION STRUCTURE; REPRODUCTIVE STATUS; SEA ICE; SEX DETERMINATION; TEMPORAL ANALYSIS;

CANADA; HUDSON BAY;

URSUS MARITIMUS;

EID: 77954300631     PISSN: 00040843     EISSN: None     Source Type: Journal    
DOI: 10.14430/arctic975     Document Type: Article

References (60)

1. Amstrup, S. C., Durner, G. M., Stirling, I., Lunn, N. J., and Messier, F. 2000. Movements and distribution of polar bears in the Beaufort Sea. Canadian Journal of Zoology 78:948-966.
2. Andrewartha, H. G., and Birch, L. C. 1982. Selections from the distribution and abundance of animals. Chicago: The University of Chicago Press.
3. Arnould, J. P. Y., and Ramsay, M. A. 1994. Milk production and milk consumption in polar bears during the ice-free period in western Hudson Bay. Canadian Journal of Zoology 72:1365-1370.
4. Bluhm, B. A., and Gradinger, R. 2008. Regional variability in food availability for Arctic marine mammals. Ecological Applications 18 Supplement: S77-S96.
5. Burek, K. A., Gulland, F. M. D., and O'Hara, T. M. 2008. Effects of climate change on Arctic marine mammal health. Ecological Applications 18 Supplement: S126-S134.
6. Calvert, W., and Ramsay, M. A. 1998. Evaluation of age determination of polar bears by counts of cementum growth layer groups. Ursus 10:449-453.
7. Comiso, J. C. 2003. Warming trends in the Arctic from clear sky satellite observations. Journal of Climate 16:3498-3510.
8. Derocher, A. E., and Stirling, I. 1990a. Distribution of polar bears (Ursus maritimus) during the ice-free period in western Hudson Bay. Canadian Journal of Zoology 68:1395-1403.
9. -. 1990b. Observations of aggregating behaviour in adult male polar bears (Ursus maritimus). Canadian Journal of Zoology 68:1390-1394.
10. -. 1995. Temporal variation in reproduction and body mass of polar bears in western Hudson Bay. Canadian Journal of Zoology 73:1657-1665.
11. Derocher, A. E., Stirling, I., and Calvert, W. 1997. Male-biased harvesting of polar bears in western Hudson Bay. Journal of Wildlife Management 61:1075-1082. (Pubitemid 28111022)
12. Derocher, A. E., Lunn, N. J., and Stirling, I. 2004. Polar bears in a warming climate. Integrative and Comparative Biology 44:163-176.
13. Etkin, D. A. 1991. Breakup in Hudson Bay: Its sensitivity to air temperatures and implications for climate warming. Climatological Bulletin 25:21-34.
14. Fischbach, A. S., Amstrup, S. C., and Douglas, D. C. 2007. Landward and eastward shift of Alaskan polar bear denning associated with recent sea ice changes. Polar Biology 30:1395-1405.
15. Gagnon, A. S., and Gough, W. A. 2005a. Trends in the dates of ice freeze-up and breakup over Hudson Bay, Canada. Arctic 58(4):370-382.
16. -. 2005b. Climate change scenarios for the Hudson Bay region: An intermodel comparison. Climate Change 69:269-297.
17. Gende, S. M., and Quinn, T. P. 2004. The relative importance of prey density and social dominance in determining energy intake by bears feeding on Pacific salmon. Canadian Journal of Zoology 82:75-85.
18. Gough, W. A., and Wolfe, E. 2001. Climate change scenarios for Hudson Bay, Canada, from general circulation models. Arctic 54(2):142-148.
19. 13C among Hudson Bay polar bears: Implications for metabolism and tracing terrestrial foraging. Marine Mammal Science 13:359-367, doi:10.1111/j.l748-7692.1997.tb00645.x.
20. Holland, M. M., Bitz, C. M., and Tremblay, B. 2006. Future abrupt reductions in the summer Arctic sea ice. Geophysical Research Letters 33, L23503, doi:10.1029/2006GL028024. (Pubitemid 47407873)
21. Hooge, P. N., Eichenlaub, W., and Solomon, E. 1999. The animal movement program. Anchorage: Alaska Biological Science Center, USGS.
22. Hovelsrud, G. K., McKenna, M., and Huntington, H. P. 2008. Marine mammal harvests and other interactions with humans. Ecological Applications 18 Supplement: S135-S147.
23. IPCC (Intergovernmental Panel on Climate Change). 2007. Climate change 2007: The physical science basis. Working Group I Contribution to the Fourth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge: Cambridge University Press. 1009 p.
24. Knudsen, B. 1978. Time budgets of polar bears (Ursus maritimus) on North Twin Island, James Bay, during summer. Canadian Journal of Zoology 56:1627-1628.
25. Laidre, K. L., Stirling, I., Lowry, L. F., Wiig, Ø., Heide-Jorgensen, M. P., and Ferguson, S. H. 2008. Quantifying the sensitivity of Arctic marine mammals to climate-induced habitat change. Ecological Applications 18 Supplement: S97-S125.
26. Latour, P. B. 1981. Spatial relationships and behavior of polar bears (Ursus maritimus Phipps) concentrated on land during the ice-free season of Hudson Bay. Canadian Journal of Zoology 59:1763-1774.
27. Lunn, N. J., Stirling, I., Andriashek, D., and Richardson, E. 2004. Selection of maternity dens by female polar bears in western Hudson Bay, Canada, and the effects of human disturbance. Polar Biology 27:350-356.
28. 2, Part II: Seasonal response. Journal of Climate 5:105-126.
29. Markham, W. E. 1986. The ice cover. In: Martini, LP., ed. Canadian inland seas. Elsevier Oceanography Series 44. Amsterdam: Elsevier. 101-116.
30. Maslanik, J. A., Serreze, M. C., and Barry, R. G. 1996. Recent decreases in Arctic summer ice cover and linkages to atmospheric circulation anomalies. Geophysical Research Letters 23:1677-1680.
31. Mauritzen, M., Derocher, A. E., and Wiig, Ø. 2001. Space-use strategies of female polar bears in a dynamic sea ice habitat. Canadian Journal of Zoology 79:1704-1713.
32. McLoughlin, P. D., Case, R. L., Gau, R. J., Cluff, H. D., Mulders, R., and Messier, F. 2002. Hierarchical habitat selection by barrenground grizzly bears in the central Canadian Arctic. Oecologia 132:102-108. (Pubitemid 36080219)
33. Parkinson, C. L. 2000. Variability of Arctic sea ice: The view from space, an 18-year record. Arctic 53(4):341-358.
34. Parmesan, C. 2006. Ecological and evolutionary responses to recent climate change. The Annual Review of Ecology, Evolution, and Systematics 37:637-669.
35. Parmesan, C., Ryrholm, N., Stefanescu, C., Hill, J. K., Thomas, C. D., Descimon, H., Huntley, B., et al. 1999. Poleward shifts in geographical ranges of butterfly species associated with regional warming. Nature 399:579-583.
36. Ramsay, M. A., and Stirling, I. 1990. Fidelity of female polar bears to winter den sites. Journal of Mammalogy 71:233-236.
37. Regehr, E. V., Lunn, N. J., Amstrup, S. C., and Stirling, I. 2007. Effects of earlier sea ice breakup on survival and population size of polar bears in western Hudson Bay. Journal of Wildlife Management 71:2673-2683.
38. Rigor, I. G., and Wallace, J. M. 2004. Variations in the age of Arctic sea-ice and summer sea-ice extent. Geophysical Research Letters 31, L09401, doi:10.1029/2004GL019492. (Pubitemid 39026624)
39. Root, T. L., Price, J. T., Hall, K. R., Schneider, S. H., Rosenzweig, C., and Pounds, J. A. 2003. Fingerprints of global warming on wild animals and plants. Nature 421:57-60.
40. Schliebe, S., Rode, K. D., Gleason, J. S., Wilder, L., Proffitt, K., Evans, T. J., and Miller, S. 2008. Effects of sea ice extent and food availability on spatial and temporal distribution of polar bears during the fall open-water season in the southern Beaufort Sea. Polar Biology 31:999-1010.
41. Serreze, M. C., Holland, M. M., and Stroeve, J. 2007. Perspectives on the Arctic's shrinking sea-ice cover. Science 315:1533-1536.
42. Skinner, W. R., Jefferies, R. L., Carleton, T. J., Rockwell, R. F., and Abraham, K. F. 1998. Prediction of reproductive success and failure in lesser snow geese based on early season climatic variables. Global Change Biology 4:3-16.
43. Stirling, I., and Derocher, A. E. 1993. Possible impacts of climatic warming on polar bears. Arctic 46(3):240-245.
44. Stirling, I., and Lunn, N. J. 1997. Environmental fluctuations in Arctic marine ecosystems as reflected by variability in reproduction of polar bears and ringed seals. In: Woodin, S. J., and Marquiss, M., eds. Ecology of Arctic environments. Oxford: Blackwell Science. 167-181.
45. Stirling, I., and Parkinson, C. L. 2006. Possible effects of climate warming on selected populations of polar bears (Ursus maritimus) in the Canadian Arctic. Arctic 59(3):261-275.
46. Stirling, I., Jonkel, C., Smith, P., Robertson, R., and Cross, D. 1977. The ecology of the polar bear (Ursus maritimus) along the western coast of Hudson Bay. Canadian Wildlife Service Occasional Paper 33.
47. Stirling, I., Spencer, C., and Andriashek, D. 1989. Immobilization of polar bears (Ursus maritimus) with Telazol in the Canadian Arctic. Journal of Wildlife Diseases 25:159-168.
48. Stirling, I., Lunn, N. J., and Iacozza, I. 1999. Long-term trends in the population ecology of polar bears in western Hudson Bay in relation to climatic change. Arctic 52(3):294-306.
49. Stirling, I., Lunn, N. J., Iacozza, J., Elliott, C., and Obbard, M. 2004. Polar bear distribution and abundance on the southwestern Hudson Bay coast during open water season, in relation to population trends and annual ice patterns. Arctic 57(1):15-26.
50. Stroeve, J., Holland, M. M., Meier, W., Scambos, T., and Serreze, M. 2007. Arctic sea ice decline: Faster than forecast. Geophysical Research Letters 34, L09501, doi:10.1029/2007GL029703. (Pubitemid 47008153)
51. Taylor, M., Larsen, T., and Schweinsburg, R. 1985. Observations of intraspecific aggression and cannibalism in polar bears (Ursus maritimus). Arctic 38(4):303-309.
52. Thomas, C. D., and Lennon, J. J. 1999. Birds extend their ranges northwards. Nature 399:213.
53. Towns, L., Derocher, A. E., Stirling, I., Lunn, N. J., and Hedman, D. 2009. Spatial and temporal patterns of problem polar bears in Churchill, Manitoba. Polar Biology 32(10):1529-1537, doi: 10.1007/s00300-009-0653-y.
54. Tucker, W. B., Weatherly, J. W. I., Eppler, D. T., Farmer, D., and Bentley, D. L. 2001. Evidence for the rapid thinning of sea ice in the western Arctic Ocean at the end of the 1980s. Geophysical Research Letters 28:2851-2854.
55. Wang, J., Mysak, L. A., and Ingram, R. G. 1994. A numerical simulation of sea ice cover in Hudson Bay. Journal of Physical Oceanography 24:2515-2533.
56. Watts, P. D., and Hansen, S. E. 1987. Cyclic starvation as a reproductive strategy in the polar bear. Symposium of the Zoological Society of London 57:305-318.
57. Wielgus, R. B., and Bunnell, F. L. 1994. Sexual segregation and female grizzly bear avoidance of males. Journal of Wildlife Management 58:405-413.
58. Walsh, J. E. 2008. Climate of the Arctic marine environment. Ecological Applications 18 Supplement: S3-S22.
59. Wiig, Ø., Aars, J., and Born, E. W. 2008. Effects of climate change on polar bears. Science Progress 91:151-173.
60. Zar, J. 1999. Biostatistical analysis, 4th ed. Upper Saddle River, New Jersey: Prentice-Hall Inc.