气候变化领域集成服务门户(CCPortal): Krill (Euphausia superba) distribution contracts southward during rapid regional warming

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DOI	10.1038/s41558-018-0370-z
	Krill (Euphausia superba) distribution contracts southward during rapid regional warming
	Atkinson A.; Hill S.L.; Pakhomov E.A.; Siegel V.; Reiss C.S.; Loeb V.J.; Steinberg D.K.; Schmidt K.; Tarling G.A.; Gerrish L.; Sailley S.F.
发表日期	2019
ISSN	1758678X
EISSN	1758-6798
卷号	9 期号:2 页码:142-+
英文摘要	High-latitude ecosystems are among the fastest warming on the planet1. Polar species may be sensitive to warming and ice loss, but data are scarce and evidence is conflicting2–4. Here, we show that, within their main population centre in the southwest Atlantic sector, the distribution of Euphausia superba (hereafter, ‘krill’) has contracted southward over the past 90 years. Near their northern limit, numerical densities have declined sharply and the population has become more concentrated towards the Antarctic shelves. A concomitant increase in mean body length reflects reduced recruitment of juvenile krill. We found evidence for environmental controls on recruitment, including a reduced density of juveniles following positive anomalies of the Southern Annular Mode. Such anomalies are associated with warm, windy and cloudy weather and reduced sea ice, all of which may hinder egg production and the survival of larval krill5. However, the total post-larval density has declined less steeply than the density of recruits, suggesting that survival rates of older krill have increased. The changing distribution is already perturbing the krill-centred food web6 and may affect biogeochemical cycling7,8. Rapid climate change, with associated nonlinear adjustments in the roles of keystone species, poses challenges for the management of valuable polar ecosystems3. © 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:000456994900019
scopus关键词	Euphausia superba; Euphausiacea
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/82292
作者单位	Plymouth Marine Laboratory, Plymouth, United Kingdom; British Antarctic Survey, Cambridge, United Kingdom; Department of Earth, Ocean and Atmospheric Sciences, University of British Columbia, Vancouver, BC, Canada; Institute for the Oceans and Fisheries, University of British Columbia, Vancouver, BC, Canada; Hakai Institute, Heriot Bay, BC, Canada; Thuenen Institute of Sea Fisheries, Bremerhaven, Germany; Antarctic Ecosystem Research Division, South West Fisheries Science Centre, NOAA Fisheries, La Jolla, CA, United States; Moss Landing Marine Laboratories, Moss Landing, CA, United States; Virginia Institute of Marine Science, College of William & Mary, Gloucester Point, VA, United States; School of Geography, Earth and Environmental Sciences, University of Plymouth, Plymouth, United Kingdom
推荐引用方式 GB/T 7714	Atkinson A.,Hill S.L.,Pakhomov E.A.,et al. Krill (Euphausia superba) distribution contracts southward during rapid regional warming[J],2019,9(2):142-+.
APA	Atkinson A..,Hill S.L..,Pakhomov E.A..,Siegel V..,Reiss C.S..,...&Sailley S.F..(2019).Krill (Euphausia superba) distribution contracts southward during rapid regional warming.Nature Climate Change,9(2),142-+.
MLA	Atkinson A.,et al."Krill (Euphausia superba) distribution contracts southward during rapid regional warming".Nature Climate Change 9.2(2019):142-+.