Productivity and Change in Fish and Squid in the Southern Ocean
Southern Ocean ecosystems are globally important and vulnerable to global drivers of change, yet they remain challenging to study. Fish and squid make up a significant portion of the biomass within the Southern Ocean, filling key roles in food webs from forage to mid-trophic species and top predator...
Published in: | Frontiers in Ecology and Evolution |
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Online Access: | http://dx.doi.org/10.3389/fevo.2021.624918 https://www.frontiersin.org/articles/10.3389/fevo.2021.624918/full |
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crfrontiers:10.3389/fevo.2021.624918 2024-03-31T07:49:00+00:00 Productivity and Change in Fish and Squid in the Southern Ocean Caccavo, Jilda Alicia Christiansen, Henrik Constable, Andrew J. Ghigliotti, Laura Trebilco, Rowan Brooks, Cassandra M. Cotte, Cédric Desvignes, Thomas Dornan, Tracey Jones, Christopher D. Koubbi, Philippe Saunders, Ryan A. Strobel, Anneli Vacchi, Marino van de Putte, Anton P. Walters, Andrea Waluda, Claire M. Woods, Briannyn L. Xavier, José C. Alexander von Humboldt-Stiftung Office of Polar Programs Office of Polar Programs 2021 http://dx.doi.org/10.3389/fevo.2021.624918 https://www.frontiersin.org/articles/10.3389/fevo.2021.624918/full unknown Frontiers Media SA https://creativecommons.org/licenses/by/4.0/ Frontiers in Ecology and Evolution volume 9 ISSN 2296-701X Ecology Ecology, Evolution, Behavior and Systematics journal-article 2021 crfrontiers https://doi.org/10.3389/fevo.2021.624918 2024-03-05T00:17:01Z Southern Ocean ecosystems are globally important and vulnerable to global drivers of change, yet they remain challenging to study. Fish and squid make up a significant portion of the biomass within the Southern Ocean, filling key roles in food webs from forage to mid-trophic species and top predators. They comprise a diverse array of species uniquely adapted to the extreme habitats of the region. Adaptations such as antifreeze glycoproteins, lipid-retention, extended larval phases, delayed senescence, and energy-conserving life strategies equip Antarctic fish and squid to withstand the dark winters and yearlong subzero temperatures experienced in much of the Southern Ocean. In addition to krill exploitation, the comparatively high commercial value of Antarctic fish, particularly the lucrative toothfish, drives fisheries interests, which has included illegal fishing. Uncertainty about the population dynamics of target species and ecosystem structure and function more broadly has necessitated a precautionary, ecosystem approach to managing these stocks and enabling the recovery of depleted species. Fisheries currently remain the major local driver of change in Southern Ocean fish productivity, but global climate change presents an even greater challenge to assessing future changes. Parts of the Southern Ocean are experiencing ocean-warming, such as the West Antarctic Peninsula, while other areas, such as the Ross Sea shelf, have undergone cooling in recent years. These trends are expected to result in a redistribution of species based on their tolerances to different temperature regimes. Climate variability may impair the migratory response of these species to environmental change, while imposing increased pressures on recruitment. Fisheries and climate change, coupled with related local and global drivers such as pollution and sea ice change, have the potential to produce synergistic impacts that compound the risks to Antarctic fish and squid species. The uncertainty surrounding how different species will respond ... Article in Journal/Newspaper Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Southern Ocean Frontiers (Publisher) Antarctic Southern Ocean Antarctic Peninsula Ross Sea Frontiers in Ecology and Evolution 9 |
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collection |
Frontiers (Publisher) |
op_collection_id |
crfrontiers |
language |
unknown |
topic |
Ecology Ecology, Evolution, Behavior and Systematics |
spellingShingle |
Ecology Ecology, Evolution, Behavior and Systematics Caccavo, Jilda Alicia Christiansen, Henrik Constable, Andrew J. Ghigliotti, Laura Trebilco, Rowan Brooks, Cassandra M. Cotte, Cédric Desvignes, Thomas Dornan, Tracey Jones, Christopher D. Koubbi, Philippe Saunders, Ryan A. Strobel, Anneli Vacchi, Marino van de Putte, Anton P. Walters, Andrea Waluda, Claire M. Woods, Briannyn L. Xavier, José C. Productivity and Change in Fish and Squid in the Southern Ocean |
topic_facet |
Ecology Ecology, Evolution, Behavior and Systematics |
description |
Southern Ocean ecosystems are globally important and vulnerable to global drivers of change, yet they remain challenging to study. Fish and squid make up a significant portion of the biomass within the Southern Ocean, filling key roles in food webs from forage to mid-trophic species and top predators. They comprise a diverse array of species uniquely adapted to the extreme habitats of the region. Adaptations such as antifreeze glycoproteins, lipid-retention, extended larval phases, delayed senescence, and energy-conserving life strategies equip Antarctic fish and squid to withstand the dark winters and yearlong subzero temperatures experienced in much of the Southern Ocean. In addition to krill exploitation, the comparatively high commercial value of Antarctic fish, particularly the lucrative toothfish, drives fisheries interests, which has included illegal fishing. Uncertainty about the population dynamics of target species and ecosystem structure and function more broadly has necessitated a precautionary, ecosystem approach to managing these stocks and enabling the recovery of depleted species. Fisheries currently remain the major local driver of change in Southern Ocean fish productivity, but global climate change presents an even greater challenge to assessing future changes. Parts of the Southern Ocean are experiencing ocean-warming, such as the West Antarctic Peninsula, while other areas, such as the Ross Sea shelf, have undergone cooling in recent years. These trends are expected to result in a redistribution of species based on their tolerances to different temperature regimes. Climate variability may impair the migratory response of these species to environmental change, while imposing increased pressures on recruitment. Fisheries and climate change, coupled with related local and global drivers such as pollution and sea ice change, have the potential to produce synergistic impacts that compound the risks to Antarctic fish and squid species. The uncertainty surrounding how different species will respond ... |
author2 |
Alexander von Humboldt-Stiftung Office of Polar Programs Office of Polar Programs |
format |
Article in Journal/Newspaper |
author |
Caccavo, Jilda Alicia Christiansen, Henrik Constable, Andrew J. Ghigliotti, Laura Trebilco, Rowan Brooks, Cassandra M. Cotte, Cédric Desvignes, Thomas Dornan, Tracey Jones, Christopher D. Koubbi, Philippe Saunders, Ryan A. Strobel, Anneli Vacchi, Marino van de Putte, Anton P. Walters, Andrea Waluda, Claire M. Woods, Briannyn L. Xavier, José C. |
author_facet |
Caccavo, Jilda Alicia Christiansen, Henrik Constable, Andrew J. Ghigliotti, Laura Trebilco, Rowan Brooks, Cassandra M. Cotte, Cédric Desvignes, Thomas Dornan, Tracey Jones, Christopher D. Koubbi, Philippe Saunders, Ryan A. Strobel, Anneli Vacchi, Marino van de Putte, Anton P. Walters, Andrea Waluda, Claire M. Woods, Briannyn L. Xavier, José C. |
author_sort |
Caccavo, Jilda Alicia |
title |
Productivity and Change in Fish and Squid in the Southern Ocean |
title_short |
Productivity and Change in Fish and Squid in the Southern Ocean |
title_full |
Productivity and Change in Fish and Squid in the Southern Ocean |
title_fullStr |
Productivity and Change in Fish and Squid in the Southern Ocean |
title_full_unstemmed |
Productivity and Change in Fish and Squid in the Southern Ocean |
title_sort |
productivity and change in fish and squid in the southern ocean |
publisher |
Frontiers Media SA |
publishDate |
2021 |
url |
http://dx.doi.org/10.3389/fevo.2021.624918 https://www.frontiersin.org/articles/10.3389/fevo.2021.624918/full |
geographic |
Antarctic Southern Ocean Antarctic Peninsula Ross Sea |
geographic_facet |
Antarctic Southern Ocean Antarctic Peninsula Ross Sea |
genre |
Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Peninsula Ross Sea Sea ice Southern Ocean |
op_source |
Frontiers in Ecology and Evolution volume 9 ISSN 2296-701X |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3389/fevo.2021.624918 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
9 |
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1795037213576134656 |