Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1126/science.aan8677 |
High-energy, high-fat lifestyle challenges an Arctic apex predator, the polar bear | |
Pagano, A. M.1,2; Durner, G. M.1; Rode, K. D.1; Atwood, T. C.1; Atkinson, S. N.3; Peacock, E.1; Costa, D. P.2; Owen, M. A.4; Williams, T. M.2 | |
2018-02-02 | |
发表期刊 | SCIENCE
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ISSN | 0036-8075 |
EISSN | 1095-9203 |
出版年 | 2018 |
卷号 | 359期号:6375页码:568-+ |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Canada |
英文摘要 | Regional declines in polar bear (Ursus maritimus) populations have been attributed to changing sea ice conditions, but with limited information on the causative mechanisms. By simultaneously measuring field metabolic rates, daily activity patterns, body condition, and foraging success of polar bears moving on the spring sea ice, we found that high metabolic rates (1.6 times greater than previously assumed) coupled with low intake of fat-rich marine mammal prey resulted in an energy deficit for more than half of the bears examined. Activity and movement on the sea ice strongly influenced metabolic demands. Consequently, increases in mobility resulting from ongoing and forecasted declines in and fragmentation of sea ice are likely to increase energy demands and may be an important factor explaining observed declines in body condition and survival. |
领域 | 地球科学 ; 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000423795800040 |
WOS关键词 | SOUTHERN BEAUFORT SEA ; URSUS-MARITIMUS ; BODY-COMPOSITION ; ACTIVITY PATTERNS ; MARINE MAMMALS ; METABOLIC-RATE ; TEMPERATURE ; POPULATION ; BEHAVIOR ; WATER |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
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/197904 |
专题 | 地球科学 资源环境科学 气候变化 |
作者单位 | 1.US Geol Survey, Alaska Sci Ctr, Anchorage, AK 99508 USA; 2.Univ Calif Santa Cruz, Dept Ecol & Evolutionary Biol, Santa Cruz, CA 95060 USA; 3.Grp 7, POB 19,RR2, Dugald, MB R0E 0K0, Canada; 4.San Diego Zoo Global, Inst Conservat Res, San Diego, CA 92027 USA |
推荐引用方式 GB/T 7714 | Pagano, A. M.,Durner, G. M.,Rode, K. D.,et al. High-energy, high-fat lifestyle challenges an Arctic apex predator, the polar bear[J]. SCIENCE,2018,359(6375):568-+. |
APA | Pagano, A. M..,Durner, G. M..,Rode, K. D..,Atwood, T. C..,Atkinson, S. N..,...&Williams, T. M..(2018).High-energy, high-fat lifestyle challenges an Arctic apex predator, the polar bear.SCIENCE,359(6375),568-+. |
MLA | Pagano, A. M.,et al."High-energy, high-fat lifestyle challenges an Arctic apex predator, the polar bear".SCIENCE 359.6375(2018):568-+. |
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