Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate
Antarctic krill Euphausia superba, a keystone species in the Southern Ocean, is highly relevant for studying effects of climate-related shifts on management systems. Krill provides a key link between primary producers and higher trophic levels and supports the largest regional fishery. Any major per...
Published in: | Marine Ecology Progress Series |
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Online Access: | http://hdl.handle.net/10852/86569 http://urn.nb.no/URN:NBN:no-89212 https://doi.org/10.3354/meps13705 |
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ftoslouniv:oai:www.duo.uio.no:10852/86569 2023-05-15T14:02:31+02:00 Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate McBride, Margaret Stokke, Olav Schram Renner, Angelika Krafft, Bjørn Arne Bergstad, Odd Aksel Biuw, Martin Lowther, Andrew Stiansen, Jan Erik 2021-06-25T11:38:10Z http://hdl.handle.net/10852/86569 http://urn.nb.no/URN:NBN:no-89212 https://doi.org/10.3354/meps13705 EN eng NFR/257614 NFR/267416 http://urn.nb.no/URN:NBN:no-89212 McBride, Margaret Stokke, Olav Schram Renner, Angelika Krafft, Bjørn Arne Bergstad, Odd Aksel Biuw, Martin Lowther, Andrew Stiansen, Jan Erik . Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate. Marine Ecology Progress Series. 2021, 668, 185-214 http://hdl.handle.net/10852/86569 1918436 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Marine Ecology Progress Series&rft.volume=668&rft.spage=185&rft.date=2021 Marine Ecology Progress Series 668 185 214 https://doi.org/10.3354/meps13705 URN:NBN:no-89212 Fulltext https://www.duo.uio.no/bitstream/handle/10852/86569/1/m668p185.pdf Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ CC-BY 0171-8630 Journal article Tidsskriftartikkel Peer reviewed PublishedVersion 2021 ftoslouniv https://doi.org/10.3354/meps13705 2021-07-14T22:30:55Z Antarctic krill Euphausia superba, a keystone species in the Southern Ocean, is highly relevant for studying effects of climate-related shifts on management systems. Krill provides a key link between primary producers and higher trophic levels and supports the largest regional fishery. Any major perturbation in the krill population would have severe ecological and economic ramifications. We review the literature to determine how climate change, in concert with other environmental changes, alters krill habitat, affects spatial distribution/abundance, and impacts fisheries management. Findings recently reported on the effects of climate change on krill distribution and abundance are inconsistent, however, raising questions regarding methods used to detect changes in density and biomass. One recent study reported a sharp decline in krill densities near their northern limit, accompanied by a poleward contraction in distribution in the Southwest Atlantic sector. Another recent study found no evidence of long-term decline in krill density or biomass and reported no evidence of a poleward shift in distribution. Moreover, with predicted decreases in phytoplankton production, vertical foraging migrations to the seabed may become more frequent, also impacting krill production and harvesting. Potentially cumulative impacts of climate change further compound the management challenge faced by CCAMLR, the organization responsible for conservation of Antarctic marine living resources: to detect changes in the abundance, distribution, and reproductive performance of krill and krill-dependent predator stocks and to respond to such change by adjusting its conservation measures. Based on CCAMLR reports and documents, we review the institutional framework, outline how climate change has been addressed within this organization, and examine the prospects for further advances toward ecosystem risk assessment and an adaptive management system. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean Universitet i Oslo: Digitale utgivelser ved UiO (DUO) Antarctic Southern Ocean Marine Ecology Progress Series 668 185 214 |
institution |
Open Polar |
collection |
Universitet i Oslo: Digitale utgivelser ved UiO (DUO) |
op_collection_id |
ftoslouniv |
language |
English |
description |
Antarctic krill Euphausia superba, a keystone species in the Southern Ocean, is highly relevant for studying effects of climate-related shifts on management systems. Krill provides a key link between primary producers and higher trophic levels and supports the largest regional fishery. Any major perturbation in the krill population would have severe ecological and economic ramifications. We review the literature to determine how climate change, in concert with other environmental changes, alters krill habitat, affects spatial distribution/abundance, and impacts fisheries management. Findings recently reported on the effects of climate change on krill distribution and abundance are inconsistent, however, raising questions regarding methods used to detect changes in density and biomass. One recent study reported a sharp decline in krill densities near their northern limit, accompanied by a poleward contraction in distribution in the Southwest Atlantic sector. Another recent study found no evidence of long-term decline in krill density or biomass and reported no evidence of a poleward shift in distribution. Moreover, with predicted decreases in phytoplankton production, vertical foraging migrations to the seabed may become more frequent, also impacting krill production and harvesting. Potentially cumulative impacts of climate change further compound the management challenge faced by CCAMLR, the organization responsible for conservation of Antarctic marine living resources: to detect changes in the abundance, distribution, and reproductive performance of krill and krill-dependent predator stocks and to respond to such change by adjusting its conservation measures. Based on CCAMLR reports and documents, we review the institutional framework, outline how climate change has been addressed within this organization, and examine the prospects for further advances toward ecosystem risk assessment and an adaptive management system. |
format |
Article in Journal/Newspaper |
author |
McBride, Margaret Stokke, Olav Schram Renner, Angelika Krafft, Bjørn Arne Bergstad, Odd Aksel Biuw, Martin Lowther, Andrew Stiansen, Jan Erik |
spellingShingle |
McBride, Margaret Stokke, Olav Schram Renner, Angelika Krafft, Bjørn Arne Bergstad, Odd Aksel Biuw, Martin Lowther, Andrew Stiansen, Jan Erik Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate |
author_facet |
McBride, Margaret Stokke, Olav Schram Renner, Angelika Krafft, Bjørn Arne Bergstad, Odd Aksel Biuw, Martin Lowther, Andrew Stiansen, Jan Erik |
author_sort |
McBride, Margaret |
title |
Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate |
title_short |
Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate |
title_full |
Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate |
title_fullStr |
Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate |
title_full_unstemmed |
Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate |
title_sort |
antarctic krill euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate |
publishDate |
2021 |
url |
http://hdl.handle.net/10852/86569 http://urn.nb.no/URN:NBN:no-89212 https://doi.org/10.3354/meps13705 |
geographic |
Antarctic Southern Ocean |
geographic_facet |
Antarctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Euphausia superba Southern Ocean |
op_source |
0171-8630 |
op_relation |
NFR/257614 NFR/267416 http://urn.nb.no/URN:NBN:no-89212 McBride, Margaret Stokke, Olav Schram Renner, Angelika Krafft, Bjørn Arne Bergstad, Odd Aksel Biuw, Martin Lowther, Andrew Stiansen, Jan Erik . Antarctic krill Euphausia superba: spatial distribution, abundance, and management of fisheries in a changing climate. Marine Ecology Progress Series. 2021, 668, 185-214 http://hdl.handle.net/10852/86569 1918436 info:ofi/fmt:kev:mtx:ctx&ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Marine Ecology Progress Series&rft.volume=668&rft.spage=185&rft.date=2021 Marine Ecology Progress Series 668 185 214 https://doi.org/10.3354/meps13705 URN:NBN:no-89212 Fulltext https://www.duo.uio.no/bitstream/handle/10852/86569/1/m668p185.pdf |
op_rights |
Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3354/meps13705 |
container_title |
Marine Ecology Progress Series |
container_volume |
668 |
container_start_page |
185 |
op_container_end_page |
214 |
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1766272836813455360 |