气候变化领域集成服务门户(CCPortal): Arctic greening and bird nest predation risk across tundra ecotones

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DOI	10.1038/s41558-019-0514-9
	Arctic greening and bird nest predation risk across tundra ecotones
	Ims R.A.; Henden J.-A.; Strømeng M.A.; Thingnes A.V.; Garmo M.J.; Jepsen J.U.
发表日期	2019
ISSN	1758678X
EISSN	1758-6798
卷号	9 期号:8 页码:607-+
英文摘要	Alarming global-scale declines of bird numbers are occurring under the changing climate1, and species belonging to alpine and Arctic tundra are particularly affected2,3. Increased nest predation appears to be involved4, but the mechanisms linking predation to climate change remain to be shown. Here we test the prediction from food web theory that increased primary productivity (greening of tundra) in a warming Arctic leads to a higher risk of nest predation in tundra ecosystems. By exploiting landscape-scale spatial heterogeneity in areas of primary productivity across alpine tundra ecotones and supplied with experimental nests in sub-Arctic Scandinavia, we found that predation risk indeed increased with primary productivity. The productivity-predation risk relation was independent of the simultaneous effects of rodent population dynamics and vegetation cover at nest sites. Predation risk also increased steeply with altitude, implying that species at the high-altitude end of the alpine tundra ecotones are particularly vulnerable. Our study contributes to an improved understanding of how climate change may affect Arctic and alpine ecosystems and threaten endemic biodiversity through a trophic cascade. © 2019, The Author(s), under exclusive licence to Springer Nature Limited.
学科领域	Environmental Sciences;Environmental Studies;Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:000477738300016
scopus关键词	Aves; Rodentia
来源期刊	Nature Climate Change
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/79958
作者单位	Department of Arctic and Marine Biology, UiT Arctic University of Norway, Tromsø, Norway; Department of Arctic Ecology, Norwegian Institute for Nature Research, Tromsø, Norway
推荐引用方式 GB/T 7714	Ims R.A.,Henden J.-A.,Strømeng M.A.,et al. Arctic greening and bird nest predation risk across tundra ecotones[J],2019,9(8):607-+.
APA	Ims R.A.,Henden J.-A.,Strømeng M.A.,Thingnes A.V.,Garmo M.J.,&Jepsen J.U..(2019).Arctic greening and bird nest predation risk across tundra ecotones.Nature Climate Change,9(8),607-+.
MLA	Ims R.A.,et al."Arctic greening and bird nest predation risk across tundra ecotones".Nature Climate Change 9.8(2019):607-+.