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| Stepping stones towards Antarctica: Switch to southern spawning grounds explains an abrupt range shift in krill | |
| Atkinson, Angus1; Hill, Simeon L.2; Reiss, Christian S.3; Pakhomov, Evgeny A.4,5,6; Beaugrand, Gregory7; Tarling, Geraint A.2; Yang, Guang8; Steinberg, Deborah K.9; Schmidt, Katrin10; Edwards, Martin1; Rombola, Emilce11,12; Perry, Frances A.13 | |
| 2021-12-18 | |
| 发表期刊 | GLOBAL CHANGE BIOLOGY
 |
| ISSN | 1354-1013 |
| 页码 | 17 |
| 通讯作者 | Atkinson, Angus([email protected]) |
| 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. |
| 关键词 | abrupt community shift Antarctic krill ecosystem shift euphausiid management marine protected areas range shift recruitment spawning |
| DOI | 10.1111/gcb.16009 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 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 |
| WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
| WOS记录号 | WOS:000731293400001 |
| 出版者 | WILEY |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.qdio.ac.cn/handle/337002/177489 |
| 专题 | 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.Plymouth Marine Lab, Prospect Pl, Plymouth PL1 3DH, Devon, England 2.British Antarctic Survey, Cambridge, England 3.NOAA Fisheries, South West Fisheries Sci Ctr, La Jolla, CA USA 4.Univ British Columbia, Dept Earth Ocean & Atmospher Sci, Vancouver, BC, Canada 5.Univ British Columbia, Inst Oceans & Fisheries, Vancouver, BC, Canada 6.Hakai Inst, Heriot Bay, BC, Canada 7.Univ Littoral Cote dOpale, Univ Lille, Stn Marine Wimereux, Ctr Natl Rech Sci,UMR 8187 LOG,Lab Oceanol & Geos, Wimereux, France 8.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 9.Virginia Inst Marine Sci, Coll William & Mary, Gloucester Point, VA 23062 USA 10.Univ Plymouth, Sch Geog Earth & Environm Sci, Plymouth, Devon, England 11.Inst Antartico Argentino, Direcc Nacl Antartico, Buenos Aires, DF, Argentina 12.Consejo Nacl Invest Cient & Tecn, Buenos Aires, DF, Argentina 13.Marine Biol Assoc UK, Plymouth, Devon, England |
| 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. |
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| 文件名称/大小 | 文献类型 | 版本类型 | 开放类型 | 使用许可 | ||
| Global Change Biolog（2482KB） | 期刊论文 | 出版稿 | 限制开放 | CC BY-NC-SA | 浏览 | |
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