Krill, climate, and contrasting future scenarios for Arctic and Antarctic fisheries
Arctic and Antarctic marine systems have in common high latitudes, large seasonal changes in light levels, cold air and sea temperatures, and sea ice. In other ways, however, they are strikingly different, including their: age, extent, geological structure, ice stability, and foodweb structure. Both...
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fthighwire:oai:open-archive.highwire.org:icesjms:71/7/1934 2023-05-15T13:54:36+02:00 Krill, climate, and contrasting future scenarios for Arctic and Antarctic fisheries McBride, Margaret M. Dalpadado, Padmini Drinkwater, Kenneth F. Godø, Olav Rune Hobday, Alistair J. Hollowed, Anne B. Kristiansen, Trond Murphy, Eugene J. Ressler, Patrick H. Subbey, Sam Hofmann, Eileen E. Loeng, Harald 2014-10-01 00:00:00.0 text/html http://icesjms.oxfordjournals.org/cgi/content/short/71/7/1934 https://doi.org/10.1093/icesjms/fsu002 en eng Oxford University Press http://icesjms.oxfordjournals.org/cgi/content/short/71/7/1934 http://dx.doi.org/10.1093/icesjms/fsu002 Copyright (C) 2014, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer Original Articles TEXT 2014 fthighwire https://doi.org/10.1093/icesjms/fsu002 2015-02-28T22:22:56Z Arctic and Antarctic marine systems have in common high latitudes, large seasonal changes in light levels, cold air and sea temperatures, and sea ice. In other ways, however, they are strikingly different, including their: age, extent, geological structure, ice stability, and foodweb structure. Both regions contain very rapidly warming areas and climate impacts have been reported, as have dramatic future projections. However, the combined effects of a changing climate on oceanographic processes and foodweb dynamics are likely to influence their future fisheries in very different ways. Differences in the life-history strategies of the key zooplankton species (Antarctic krill in the Southern Ocean and Calanus copepods in the Arctic) will likely affect future productivity of fishery species and fisheries. To explore future scenarios for each region, this paper: (i) considers differing characteristics (including geographic, physical, and biological) that define polar marine ecosystems and reviews known and projected impacts of climate change on key zooplankton species that may impact fished species; (ii) summarizes existing fishery resources; (iii) synthesizes this information to generate future scenarios for fisheries; and (iv) considers the implications for future fisheries management. Published studies suggest that if an increase in open water during summer in Arctic and Subarctic seas results in increased primary and secondary production, biomass may increase for some important commercial fish stocks and new mixes of species may become targeted. In contrast, published studies suggest that in the Southern Ocean the potential for existing species to adapt is mixed and that the potential for the invasion of large and highly productive pelagic finfish species appears low. Thus, future Southern Ocean fisheries may largely be dependent on existing species. It is clear from this review that new management approaches will be needed that account for the changing dynamics in these regions under climate change. Text Antarc* Antarctic Antarctic Krill Arctic Climate change Sea ice Southern Ocean Subarctic Zooplankton Copepods HighWire Press (Stanford University) Antarctic Arctic Southern Ocean ICES Journal of Marine Science 71 7 1934 1955 |
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HighWire Press (Stanford University) |
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Original Articles |
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Original Articles McBride, Margaret M. Dalpadado, Padmini Drinkwater, Kenneth F. Godø, Olav Rune Hobday, Alistair J. Hollowed, Anne B. Kristiansen, Trond Murphy, Eugene J. Ressler, Patrick H. Subbey, Sam Hofmann, Eileen E. Loeng, Harald Krill, climate, and contrasting future scenarios for Arctic and Antarctic fisheries |
topic_facet |
Original Articles |
description |
Arctic and Antarctic marine systems have in common high latitudes, large seasonal changes in light levels, cold air and sea temperatures, and sea ice. In other ways, however, they are strikingly different, including their: age, extent, geological structure, ice stability, and foodweb structure. Both regions contain very rapidly warming areas and climate impacts have been reported, as have dramatic future projections. However, the combined effects of a changing climate on oceanographic processes and foodweb dynamics are likely to influence their future fisheries in very different ways. Differences in the life-history strategies of the key zooplankton species (Antarctic krill in the Southern Ocean and Calanus copepods in the Arctic) will likely affect future productivity of fishery species and fisheries. To explore future scenarios for each region, this paper: (i) considers differing characteristics (including geographic, physical, and biological) that define polar marine ecosystems and reviews known and projected impacts of climate change on key zooplankton species that may impact fished species; (ii) summarizes existing fishery resources; (iii) synthesizes this information to generate future scenarios for fisheries; and (iv) considers the implications for future fisheries management. Published studies suggest that if an increase in open water during summer in Arctic and Subarctic seas results in increased primary and secondary production, biomass may increase for some important commercial fish stocks and new mixes of species may become targeted. In contrast, published studies suggest that in the Southern Ocean the potential for existing species to adapt is mixed and that the potential for the invasion of large and highly productive pelagic finfish species appears low. Thus, future Southern Ocean fisheries may largely be dependent on existing species. It is clear from this review that new management approaches will be needed that account for the changing dynamics in these regions under climate change. |
format |
Text |
author |
McBride, Margaret M. Dalpadado, Padmini Drinkwater, Kenneth F. Godø, Olav Rune Hobday, Alistair J. Hollowed, Anne B. Kristiansen, Trond Murphy, Eugene J. Ressler, Patrick H. Subbey, Sam Hofmann, Eileen E. Loeng, Harald |
author_facet |
McBride, Margaret M. Dalpadado, Padmini Drinkwater, Kenneth F. Godø, Olav Rune Hobday, Alistair J. Hollowed, Anne B. Kristiansen, Trond Murphy, Eugene J. Ressler, Patrick H. Subbey, Sam Hofmann, Eileen E. Loeng, Harald |
author_sort |
McBride, Margaret M. |
title |
Krill, climate, and contrasting future scenarios for Arctic and Antarctic fisheries |
title_short |
Krill, climate, and contrasting future scenarios for Arctic and Antarctic fisheries |
title_full |
Krill, climate, and contrasting future scenarios for Arctic and Antarctic fisheries |
title_fullStr |
Krill, climate, and contrasting future scenarios for Arctic and Antarctic fisheries |
title_full_unstemmed |
Krill, climate, and contrasting future scenarios for Arctic and Antarctic fisheries |
title_sort |
krill, climate, and contrasting future scenarios for arctic and antarctic fisheries |
publisher |
Oxford University Press |
publishDate |
2014 |
url |
http://icesjms.oxfordjournals.org/cgi/content/short/71/7/1934 https://doi.org/10.1093/icesjms/fsu002 |
geographic |
Antarctic Arctic Southern Ocean |
geographic_facet |
Antarctic Arctic Southern Ocean |
genre |
Antarc* Antarctic Antarctic Krill Arctic Climate change Sea ice Southern Ocean Subarctic Zooplankton Copepods |
genre_facet |
Antarc* Antarctic Antarctic Krill Arctic Climate change Sea ice Southern Ocean Subarctic Zooplankton Copepods |
op_relation |
http://icesjms.oxfordjournals.org/cgi/content/short/71/7/1934 http://dx.doi.org/10.1093/icesjms/fsu002 |
op_rights |
Copyright (C) 2014, International Council for the Exploration of the Sea/Conseil International pour l'Exploration de la Mer |
op_doi |
https://doi.org/10.1093/icesjms/fsu002 |
container_title |
ICES Journal of Marine Science |
container_volume |
71 |
container_issue |
7 |
container_start_page |
1934 |
op_container_end_page |
1955 |
_version_ |
1766260591295463424 |