Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/fee.1963 |
Historical and potential future importance of large whales as food for polar bears | |
Laidre, Kristin L.1; Stirling, Ian2,2,3; Estes, James A.4; Kochnev, Anatoly5; Roberts, Jason6 | |
2018-11-01 | |
发表期刊 | FRONTIERS IN ECOLOGY AND THE ENVIRONMENT
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ISSN | 1540-9295 |
EISSN | 1540-9309 |
出版年 | 2018 |
卷号 | 16期号:9页码:515-524 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada; Russia; Norway |
英文摘要 | Polar bears (Ursus maritimus) are expected to be adversely impacted by a warming Arctic due to melting of the sea-ice platform from which they hunt ice-breeding seals. We evaluated the hypothesis that scavenging on stranded large whale carcasses may have facilitated polar bear survival through past interglacial periods during which sea-ice was limited by analyzing: (1) present-day scavenging by polar bears on large whale carcasses; (2) energy values of large whale species; and (3) the ability of polar bears, like the brown bears (Ursus arctos) from which they evolved, to quickly store large amounts of lipids and to fast for extended periods. We concluded that scavenging on large whale carcasses likely facilitated survival of polar bears in past interglacial periods when access to seals was reduced. In a future, ice-impoverished Arctic, whale carcasses are less likely to provide nutritional refuge for polar bears because overharvesting by humans has greatly reduced large whale populations, carcass availability is geographically limited, and climate-induced sea-ice loss is projected to occur at a more rapid pace than polar bears have experienced at any previous time in their evolutionary history. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000449881700007 |
WOS关键词 | SEALS PHOCA-HISPIDA ; URSUS-MARITIMUS ; BALAENA-MYSTICETUS ; BOWHEAD WHALES ; POPULATION PARAMETERS ; TERRESTRIAL FOODS ; SVALBARD AREA ; ECOLOGY ; PRODUCTIVITY ; INSIGHTS |
WOS类目 | Ecology ; Environmental Sciences |
WOS研究方向 | Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/31637 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Washington, Appl Phys Lab, Polar Sci Ctr, Seattle, WA 98105 USA; 2.Univ Alberta, Dept Biol Sci, Edmonton, AB, Canada; 3.Environm & Climate Change Canada, Wildlife Res Div, Edmonton, AB, Canada; 4.Univ Calif Santa Cruz, Dept Ecol & Evolutionary Biol, Santa Cruz, CA 95064 USA; 5.Russian Acad Sci, Mammals Ecol Lab, Inst Biol Problems North, Far East Branch, Magadan, Russia; 6.Jason Roberts Prod, Longyearbyen, Norway |
推荐引用方式 GB/T 7714 | Laidre, Kristin L.,Stirling, Ian,Estes, James A.,et al. Historical and potential future importance of large whales as food for polar bears[J]. FRONTIERS IN ECOLOGY AND THE ENVIRONMENT,2018,16(9):515-524. |
APA | Laidre, Kristin L.,Stirling, Ian,Estes, James A.,Kochnev, Anatoly,&Roberts, Jason.(2018).Historical and potential future importance of large whales as food for polar bears.FRONTIERS IN ECOLOGY AND THE ENVIRONMENT,16(9),515-524. |
MLA | Laidre, Kristin L.,et al."Historical and potential future importance of large whales as food for polar bears".FRONTIERS IN ECOLOGY AND THE ENVIRONMENT 16.9(2018):515-524. |
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