Comments in response to "estimating the energetic contribution of polar bear (Ursus maritimus) summer diets to the total energy budget" by Dyck and Kebreab (2009)

Journal of Mammalogy

Volumn 91, Issue 6, 2010, Pages 1517-1523

  Rode, Karyn D ^a   Reist, James D ^b   Peacock, Elizabeth ^c,f   Stirling, Ian ^d,e  

^a U States Fish and Wildlife Service   (United States)

^b FISHERIES AND OCEANS CANADA   (Canada)

^c Government of Nunavut   (Canada)

^d ENVIRONMENT CANADA   (Canada)

^e UNIVERSITY OF ALBERTA   (Canada)

^f U S GEOLOGICAL SURVEY   (United States)

Author keywords

fasting; food intake; polar bears; sea ice; terrestrial foraging

Indexed keywords

ANNUAL VARIATION; ARCTIC ENVIRONMENT; BEAR; BODY MASS; DIET; ENERGY BUDGET; ENERGY EFFICIENCY; ESTIMATION METHOD; FASTING; FEEDING BEHAVIOR; FOOD INTAKE; FORAGING BEHAVIOR; FRUGIVORY; FUNCTIONAL MORPHOLOGY; MATHEMATICAL ANALYSIS; METABOLISM; OPEN WATER; SALMONID; SEA ICE; TERRESTRIAL ENVIRONMENT;

ARCTIC OCEAN; BEAUFORT SEA; CANADA; HUDSON BAY;

PHOCA HISPIDA; SALVELINUS ALPINUS; URSUS ARCTOS; URSUS MARITIMUS;

EID: 78650468854     PISSN: 00222372     EISSN: 15451542     Source Type: Journal    
DOI: 10.1644/09-MAMM-A-399.1     Document Type: Review

References (60)

1. AMSTRUP, S. C., B. G. MARCOT, AND D. C. DOUGLAS. 2008. A Bayesian network modeling approach to forecasting the 21st century worldwide status of polar bears. Pp. 213-268 in Arctic sea ice decline: observations, projections, mechanisms, and implications (E. T. DeWeaver, C. M. Bitz, and L.-B. Tremblay, eds.). Geophysical Monograph 180. American Geophysical Union, Washington, D.C.
2. BARKER, O. E., AND A. E. DEROCHER. 2009. Brown bear (Ursus arctos) predation of broad whitefish (Coregonus nasus) in the Mackenzie Delta region, Northwest Territories. Arctic 82:312-316.
3. BURGNER, R. L. 1991. Life history of sockeye salmon (Oncorhynchus nerka). Pp. 1-118 in Pacific salmon life histories (C. Croot and L. Marcolis, eds.). University of British Columbia Press, Vancouver, British Columbia, Canada.
4. DEMPSON, J. B., AND J. M. GREEN. 1985. Life history of the anadromous arctic char (Salvelinus alpinus) in the Fraser River, northern Labrador. Canadian Journal of Zoology 63:315-324.
5. DEROCHER, A. E., D. ANDRIASHEK, AND I. STIRLING. 1993. Terrestrial foraging by polar bears during the ice-free period in western Hudson Bay. Arctic 46:251-254.
6. DEROCHER, A. E., R. A. NELSON, I. STIRLING, AND M. A. RAMSAY. 1990. Effects of fasting and feeding on serum urea and serum creatinine levels in polar bears. Marine Mammal Science 6:196-203.
7. DEROCHER, A. E., AND I. STIRLING. 1994. Age-specific reproductive performance of female polar bears (Ursus maritimus). Journal of Zoology (London) 234:527-536.
8. DYCK, M. G., AND E. KEBREAB. 2009. Estimating the energetic contribution of polar bear (Ursus maritimus) summer diets to the total energy budget. Journal of Mammalogy 90:585-593.
9. DYCK, M. G., AND S. ROMBERG. 2007. Observations of a wild polar bear (Ursus maritimus) successfully fishing arctic char (Salvelinus alpinus) and fourhorn sculpin (Myoxocephalus quadricornis). Polar Biology 30:1625-1628.
10. EAGLE, T. C., AND M. R. PELTON. 1983. Seasonal nutrition of black bears in the Great Smoky Mountains National Park. International Conference on Bear Research and Management 5:94-101.
11. FARLEY, S. D., AND C. T. ROBBINS. 1995. Lactation, hibernation, and mass dynamics of American black bears and grizzly bears. Canadian Journal of Zoology 73:2216-2222.
12. FERGUSON, S. H., M. K. TAYLOR, E. W. BORN, A. ROSING-ASVID, AND F. MESSIER. 2001. Activity and movement patterns of polar bears inhabiting consolidated versus active pack ice. Arctic 54:49-54.
13. GAU, R. J., R. CASE, D. F. PENNER, AND P. D. MCLOUGHLIN. 2002. Feeding patterns of barren-ground grizzly bears in the central Canadian Arctic. Arctic 55:339-344. (Pubitemid 36189420)
14. GENDE, S. M., T. P.QUINN, AND M. F. WILLSON. 2001. Consumption choice by bears feeding on salmon. Oecologia 127:372-382.
15. HEGGENES, J., AND S. J. SALTVEIT. 2007. Summer stream habitat partitioning by sympatric arctic char, Atlantic salmon and brown trout in two sub-arctic rivers. Journal of Fish Biology 71:1069- 1081.
16. HELLGREN, E. C. 1998. Physiology of hibernation in bears. Ursus 10:467-477.
17. HELLGREN, E. C., M. R. VAUGHAN, R. L. KIRKPATRICK, AND P. F. SCANLON. 1990. Serial changes in metabolic correlates of hibernation in black bears. Journal of Mammalogy 71:291-300.
18. HILDERBRAND, G. V., ET AL. 1999. The importance of meat, particularly salmon, to body size, population productivity, and conservation of North American brown bears. Canadian Journal of Zoology 77:132-138.
19. HOBSON, K. A., I. STIRLING, AND D. S. ANDRIASHEK. 2009. Isotopic homogeneity of breath CO2 from fasting and berryeating polar bears: implications for tracing reliance on terrestrial foods in a changing Arctic. Canadian Journal of Zoology 87:50-55.
20. HULTEN, E. 1968. Flora of Alaska and neighboring territories: a manual of the vascular plants. Stanford University Press, Stanford, California.
21. HUPP, J. W., R. NIELSON, AND W. ERICKSON. 2003. Izembek crowberry analysis. Report by West Inc. to United States Geological Survey, Anchorage, Alaska.
22. IGLOOLIK ORAL HISTORY DATABASE. 2009. Inullariit Society of Igloolik. Igloolik Research Centre, Igloolik, Nunavut, Canada.
23. 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.
24. 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.
25. LINDQVIST, C., ET AL. 2010. Complete mitochondrial genome of a Pleistocene jawbone unveils the origin of polar bear. Proceedings of the National Academy of Sciences 107:5053-5057.
26. LOHUIS, T. D., T. D. I. BECK, AND H. J. HARLOW. 2005. Hibernating black bears have blood chemistry and plasma amino acid profiles that are indicative of long-term adaptive fasting. Canadian Journal of Zoology 83:1257-1263.
27. LUNN, N. J., AND I. STIRLING. 1985. The significance of supplemental food to polar bears during the ice-free period of Hudson Bay. Canadian Journal of Zoology 63:2291-2297.
28. MAURITZEN, M., A. E. DEROCHER, O. PAVLOVA, AND O. WIIG. 2003. Female polar bears, Ursus maritimus, on the Barents Sea drift ice: walking the treadmill. Animal Behaviour 66:107-113.
29. MCDONALD, M., L. ARRAGUTAINAQ, AND Z. NOVALINGA. 1997. Voices from the bay: traditional ecological knowledge of Inuit and Cree in the Hudson Bay bioregion. Canadian Arctic Resources Committee and Environmental Committee of Municipality of Sankikiluaq, Ottawa, Ontario, Canada.
30. MCKINNEY, M. A., E. PEACOCK, AND R. J. LETCHER. 2009. Sea iceassociated diet change increases the level of chlorinated and brominated contaminants in polar bears. Environmental Science and Technology 43:4334-4339.
31. MCLOUGHLIN, P. D., R. L. CASE, R. J. GAU, H. D. CLUFF, R. MULDERS, AND F. MESSIER. 2002. Hierarchical habitat selection by barrenground grizzly bears in the central Canadian Arctic. Oecologia 132:102-108. (Pubitemid 36080219)
32. MOORE, J. W. 1974. Distribution, movements, and mortality of anadromous arctic char, Salvelinus alpinus L., in the Cumberland Sound area of Baffin Island. Journal of Fish Biology 7:339-348.
33. MOORE, J. W., AND I. A. MOORE. 1974. Food and growth of arctic char, Salvelinus alpinus (L.), in the Cumberland Sound area of Baffin Island. Journal of Fish Biology 6:79-92.
34. NELSON, R. A., G. E. FOLKS, JR., E. W. PFEIFFER, J. J. CRAIGHEAD, C. J. JONKEL, AND D. L. STEIGER. 1983. Behavior, biochemistry, and hibernation in black, grizzly, and polar bears. International Conference on Bear Research and Management 5:284-290.
35. NORMENT, C. J., AND M. E. FULLER. 1997. Breeding-season frugivory by Harris' sparrows (Zonotrichia querula) and white-crowned sparrows (Zonotrichia leucophrys) in a low-arctic ecosystem. Canadian Journal of Zoology 75:670-679.
36. OBBARD, M. E., ET AL. 2006. Temporal trends in the body condition of Southern Hudson Bay polar bears. Climate change research information note 3. Ministry of Natural Resources, Peterborough, Ontario, Canada.
37. POWER, M., J. D. REIST, AND J. B. DEMPSON. 2008. Fish in high-latitude Arctic lakes. Pp. 249-268 in Polar lakes and rivers: limnology of Arctic and Antarctic aquatic ecosystems (W. F. Vincent and J. Laybourn-Parry, eds.). Oxford University Press, Oxford, United Kingdom.
38. PRITCHARD, G. T., AND C. T. ROBBINS. 1990. Digestive and metabolic efficiencies of grizzly and black bears. Canadian Journal of Zoology 68:1645-1651.
39. RAMSAY, M. A., AND K. A. HOBSON. 1991. Polar bears make little use of terrestrial food webs: evidence from stable-carbon isotope analysis. Oecologia 86:598-600.
40. RAMSAY, M. A., R. A. NELSON, AND I. STIRLING. 1991. Seasonal changes in the ratio of serum urea to creatinine in feeding and fasting polar bears. Canadian Journal of Zoology 69:298-302.
41. RAMSAY, M. A., I. STIRLING, L. O. KNUTSEN, AND E. BROUGHTON. 1985. Use of yohimbine to reverse immobilization of polar bears by ketamine hydrochloride and xylazine hydrochloride. Journal of Wildlife Diseases 21:390-394.
42. REGEHR, E. V., C. M. HUNTER, H. CASWELL, S. C. AMSTRUP, AND I. STIRLING. 2010. Survival and breeding of polar bears in the southern Beaufort Sea in relation to sea ice. Journal of Animal Ecology 79:117-127.
43. REGEHR, E. V., N. J. LUNN, S. C. AMSTRUP, AND I. STIRLING. 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.
44. RODE, K. D., S. C. AMSTRUP, AND E. V. REGEHR. 2010. Reduced body size and cub recruitment in polar bears associated with sea ice decline. Ecological Applications 20:768-782.
45. RODE, K. D., S. D. FARLEY, AND C. T. ROBBINS. 2006. Behavioral responses of brown bears mediate nutritional effects of experimentally introduced tourism. Biological Conservation 133:70-80.
46. RODE, K. D., AND C. T. ROBBINS. 2000. Why bears consume mixed diets during fruit abundance. Canadian Journal of Zoology 78:1640-1645.
47. ROGERS, L. 1976. Effects of mast and berry crop failures on survival, growth, and reproductive success of black bears. Transactions of North American Wildlife and Natural Resources Conference 41:431-438.
48. RUSSELL, R. H. 1975. The food habits of polar bears of James Bay and southwest Hudson Bay in summer and autumn. Arctic 28:117-129.
49. SCHLIEBE, S., ET AL. 2008. 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. Polar Biology 31:999-1010.
50. SEDINGER, J. S., AND K. S. BOLLINGER 1987. Autumn staging of cackling Canada geese on the Alaska Peninsula. Wildfowl 38:13-18.
51. SEDINGER, J. S., AND D. G. RAVELING. 1984. Dietary availability in relation to availability and quality of food for goslings of cackling geese. Auk 101:295-306.
52. SMITH, P., I. STIRLING, C. JONKEL, AND I. JUNIPER. 1975. Notes on the present status of the polar bear (Ursus maritimus) in Ungava Bay and northern Labrador. Canadian Wildlife Service Progress Notes 53:1-8.
53. STIRLING, I., N. J. LUNN, AND J. IACOZZA. 1999. Long-term trends in the population ecology of polar bears in western Hudson Bay in relation to climatic change. Arctic 52:294-306.
54. STIRLING, I., AND C. L. PARKINSON. 2006. Possible effects of climatic warming on selected populations of polar bears (Ursus maritimus) in the Canadian Arctic. Arctic 59:261-275.
55. TAYLOR, M. K., ET AL. 2001. Delineating Canadian and Greenland polar bear (Ursus maritimus) populations by cluster analysis of movements. Canadian Journal of Zoology 79:690-709.
56. THIEMANN, G. W., A. E. DEROCHER, AND I. STIRLING. 2008. Polar bear Ursus maritimus conservation in Canada: an ecological basis for identifying designatable units. Oryx 42:504-515.
57. UNITED STATES FISH AND WILDLIFE SERVICE. 2009. Waterfowl population status. United States Department of the Interior, Washington, D.C. http://www.fws.gov/migratorybirds/NewReports Publications/PopulationStatus/ Waterfowl/StatusReport2009-Final. pdf. Accessed 16 November 2009.
58. WALKER, D. A., ET AL. 2009. The circumpolar Arctic vegetation map. Journal of Vegetation Science 16:267-282.
59. WALLENIUS, T. H. 1999. Yield variations of some common wild berries in Finland in 1956-1996. Annules Botanici Fennici 36:299-314.
60. WELCH, C. A., J. KEAY, K. C. KENDALL, AND C. T. ROBBINS. 1997. Constraints on frugivory by bears. Ecology 78:1105-1119.