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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2021
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ftunivtasmania:oai:eprints.utas.edu.au:46685 2023-05-15T13:43:28+02:00 Productivity and change in fish and squid in the Southern Ocean Caccavo, JA Christiansen, H Constable, AJ Ghigliotti, L Trebilco, R Brooks, CM Cotte, C Desvignes, T Dornan, T Jones, CD Koubbi, P Saunders, RA Strobel, A Vacci, M van de Putte, AP Walters, A Waluda, CM Woods, BL Xavier, JC 2021 https://eprints.utas.edu.au/46685/ unknown Frontiers Research Foundation Caccavo, JA, Christiansen, H, Constable, AJ, Ghigliotti, L, Trebilco, R orcid:0000-0001-9712-8016 , Brooks, CM, Cotte, C, Desvignes, T, Dornan, T, Jones, CD, Koubbi, P, Saunders, RA, Strobel, A, Vacci, M, van de Putte, AP, Walters, A orcid:0000-0002-7166-5689 , Waluda, CM, Woods, BL and Xavier, JC 2021 , 'Productivity and change in fish and squid in the Southern Ocean' , Frontiers in Ecology and Evolution, vol. 9 , pp. 1-25 , doi:10.3389/fevo.2021.624918 <http://dx.doi.org/10.3389/fevo.2021.624918>. fish and squid Southern Ocean ecosystem structure and function productivity habitat food webs environmental change Article PeerReviewed 2021 ftunivtasmania https://doi.org/10.3389/fevo.2021.624918 2022-08-01T22:16:34Z 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 University of Tasmania: UTas ePrints Antarctic Southern Ocean Antarctic Peninsula Ross Sea Frontiers in Ecology and Evolution 9 |
institution |
Open Polar |
collection |
University of Tasmania: UTas ePrints |
op_collection_id |
ftunivtasmania |
language |
unknown |
topic |
fish and squid Southern Ocean ecosystem structure and function productivity habitat food webs environmental change |
spellingShingle |
fish and squid Southern Ocean ecosystem structure and function productivity habitat food webs environmental change Caccavo, JA Christiansen, H Constable, AJ Ghigliotti, L Trebilco, R Brooks, CM Cotte, C Desvignes, T Dornan, T Jones, CD Koubbi, P Saunders, RA Strobel, A Vacci, M van de Putte, AP Walters, A Waluda, CM Woods, BL Xavier, JC Productivity and change in fish and squid in the Southern Ocean |
topic_facet |
fish and squid Southern Ocean ecosystem structure and function productivity habitat food webs environmental change |
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 ... |
format |
Article in Journal/Newspaper |
author |
Caccavo, JA Christiansen, H Constable, AJ Ghigliotti, L Trebilco, R Brooks, CM Cotte, C Desvignes, T Dornan, T Jones, CD Koubbi, P Saunders, RA Strobel, A Vacci, M van de Putte, AP Walters, A Waluda, CM Woods, BL Xavier, JC |
author_facet |
Caccavo, JA Christiansen, H Constable, AJ Ghigliotti, L Trebilco, R Brooks, CM Cotte, C Desvignes, T Dornan, T Jones, CD Koubbi, P Saunders, RA Strobel, A Vacci, M van de Putte, AP Walters, A Waluda, CM Woods, BL Xavier, JC |
author_sort |
Caccavo, JA |
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 Research Foundation |
publishDate |
2021 |
url |
https://eprints.utas.edu.au/46685/ |
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_relation |
Caccavo, JA, Christiansen, H, Constable, AJ, Ghigliotti, L, Trebilco, R orcid:0000-0001-9712-8016 , Brooks, CM, Cotte, C, Desvignes, T, Dornan, T, Jones, CD, Koubbi, P, Saunders, RA, Strobel, A, Vacci, M, van de Putte, AP, Walters, A orcid:0000-0002-7166-5689 , Waluda, CM, Woods, BL and Xavier, JC 2021 , 'Productivity and change in fish and squid in the Southern Ocean' , Frontiers in Ecology and Evolution, vol. 9 , pp. 1-25 , doi:10.3389/fevo.2021.624918 <http://dx.doi.org/10.3389/fevo.2021.624918>. |
op_doi |
https://doi.org/10.3389/fevo.2021.624918 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
9 |
_version_ |
1766189298408751104 |