Summer declines in activity and body temperature offer polar bears limited energy savings-Reference-Cited by-同舟云学术

Summer declines in activity and body temperature offer polar bears limited energy savings

Published:2015-07-17 Issue:6245 Volume:349 Page:295-298
ISSN:0036-8075
Container-title:Science
language:en
Short-container-title:Science

Author:

Whiteman J. P.¹²,Harlow H. J.²,Durner G. M.³,Anderson-Sprecher R.⁴,Albeke S. E.⁵,Regehr E. V.⁶,Amstrup S. C.⁷,Ben-David M.¹²

Affiliation:

1. Program in Ecology, University of Wyoming, Laramie, WY 82071, USA.

2. Department of Zoology and Physiology, University of Wyoming, Laramie, WY 82071, USA.

3. U.S. Geological Survey, Alaska Science Center, Anchorage, AK 99508, USA.

4. Department of Statistics, University of Wyoming, Laramie, WY 82071, USA.

5. Wyoming Geographic Information Science Center, University of Wyoming, Laramie, WY 82071, USA.

6. Marine Mammals Management, U.S. Fish and Wildlife Service, Anchorage, AK 99503, USA.

7. Polar Bears International, Bozeman, MT 59772, USA.

Abstract

Not that unusual after all As polar ice recedes, polar bears are facing a changed habitat with reduced summer foraging opportunities. It has been hypothesized that they might be able to resist summer food shortages by reducing their metabolic needs in a sort of “walking hibernation.” Whiteman et al. monitored energy expenditure in polar bears both on and off the ice and found energy reductions, but that these were more akin to normal mammalian fasting levels. Thus, it appears that polar bears have no energetic protections against reduced summer food supplies and will face increasing starvation threats if summer foraging habitats continue to decline. Science , this issue p. 295

Funder

NSF

U.S. Geological Survey

Wyoming NASA Space

Publisher

American Association for the Advancement of Science (AAAS)

Subject

Multidisciplinary

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5. J. Whiteman thesis University of Wyoming Laramie WY (2014).

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