Stepping stones towards Antarctica: Switch to southern spawning grounds explains an abrupt range shift in krill

doi:10.1111/gcb.16009

CORC > 海洋研究所 > 中国科学院海洋研究所 > 海洋生态与环境科学重点实验室

	Stepping stones towards Antarctica: Switch to southern spawning grounds explains an abrupt range shift in krill
	Atkinson, Angus 4; Hill, Simeon L.5; Reiss, Christian S.6; Pakhomov, Evgeny A.1,2,7; Beaugrand, Gregory 8; Tarling, Geraint A.5; Yang, Guang 9; Steinberg, Deborah K.10; Schmidt, Katrin 11; Edwards, Martin 4
刊名	GLOBAL CHANGE BIOLOGY
	2021-12-18
页码	17
关键词	abrupt community shift Antarctic krill ecosystem shift euphausiid management marine protected areas range shift recruitment spawning
ISSN号	1354-1013
DOI	10.1111/gcb.16009
通讯作者	Atkinson, Angus(aat@pml.ac.uk)
英文摘要	Poleward range shifts are a global-scale response to warming, but these vary greatly among taxa and are hard to predict for individual species, localized regions or over shorter (years to decadal) timescales. Moving poleward might be easier in the Arctic than in the Southern Ocean, where evidence for range shifts is sparse and contradictory. Here, we compiled a database of larval Antarctic krill, Euphausia superba and, together with an adult database, it showed how their range shift is out of step with the pace of warming. During a 70-year period of rapid warming (1920s-1990s), distribution centres of both larvae and adults in the SW Atlantic sector remained fixed, despite warming by 0.5-1.0 degrees C and losing sea ice. This was followed by a hiatus in surface warming and ice loss, yet during this period the distributions of krill life stages shifted greatly, by similar to 1000 km, to the south-west. Understanding the mechanism of such step changes is essential, since they herald system reorganizations that are hard to predict with current modelling approaches. We propose that the abrupt shift was driven by climatic controls acting on localized recruitment hotspots, superimposed on thermal niche conservatism. During the warming hiatus, the Southern Annular Mode index continued to become increasingly positive and, likely through reduced feeding success for larvae, this led to a precipitous decline in recruitment from the main reproduction hotspot along the southern Scotia Arc. This cut replenishment to the northern portion of the krill stock, as evidenced by declining density and swarm frequency. Concomitantly, a new, southern reproduction area developed after the 1990s, reinforcing the range shift despite the lack of surface warming. New spawning hotspots may provide the stepping stones needed for range shifts into polar regions, so planning of climate-ready marine protected areas should include these key areas of future habitat.
资助项目	World Wildlife Fund ; US National Science Foundation's Antarctic Organisms and Ecosystems Program[OPP 2026045] ; Natural Environment Research Council -SYM-PEL project[NE/S002502/1]
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
语种	英语
出版者	WILEY
WOS记录号	WOS:000731293400001
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/177488]
专题	海洋研究所_海洋生态与环境科学重点实验室
通讯作者	Atkinson, Angus
作者单位	1.Univ British Columbia, Inst Oceans & Fisheries, Vancouver, BC, Canada 2.Hakai Inst, Heriot Bay, BC, Canada 3.Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina 4.Plymouth Marine Lab, Prospect Pl, Plymouth PL1 3DH, Devon, England 5.British Antarctic Survey, Cambridge, England 6.NOAA Fisheries, South West Fisheries Sci Ctr, La Jolla, CA USA 7.Univ British Columbia, Dept Earth Ocean & Atmospher Sci, Vancouver, BC, Canada 8.Univ Littoral Cote dOpale, Univ Lille, Stn Marine Wimereux, Ctr Natl Rech Sci,UMR 8187 LOG,Lab Oceanol & Geos, Wimereux, France 9.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 10.Virginia Inst Marine Sci, Coll William & Mary, Gloucester Point, VA 23062 USA
推荐引用方式 GB/T 7714	Atkinson, Angus,Hill, Simeon L.,Reiss, Christian S.,et al. Stepping stones towards Antarctica: Switch to southern spawning grounds explains an abrupt range shift in krill[J]. GLOBAL CHANGE BIOLOGY,2021:17.
APA	Atkinson, Angus.,Hill, Simeon L..,Reiss, Christian S..,Pakhomov, Evgeny A..,Beaugrand, Gregory.,...&Perry, Frances A..(2021).Stepping stones towards Antarctica: Switch to southern spawning grounds explains an abrupt range shift in krill.GLOBAL CHANGE BIOLOGY,17.
MLA	Atkinson, Angus,et al."Stepping stones towards Antarctica: Switch to southern spawning grounds explains an abrupt range shift in krill".GLOBAL CHANGE BIOLOGY (2021):17.