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...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2021-06-01
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| Series: | Frontiers in Ecology and Evolution |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fevo.2021.624918/full |
| _version_ | 1818668568613486592 |
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| author | Jilda Alicia Caccavo Jilda Alicia Caccavo Jilda Alicia Caccavo Henrik Christiansen Andrew J. Constable Andrew J. Constable Laura Ghigliotti Rowan Trebilco Rowan Trebilco Cassandra M. Brooks Cédric Cotte Thomas Desvignes Tracey Dornan Tracey Dornan Christopher D. Jones Philippe Koubbi Philippe Koubbi Ryan A. Saunders Anneli Strobel Marino Vacchi Anton P. van de Putte Anton P. van de Putte Andrea Walters Claire M. Waluda Briannyn L. Woods José C. Xavier José C. Xavier |
| author_facet | Jilda Alicia Caccavo Jilda Alicia Caccavo Jilda Alicia Caccavo Henrik Christiansen Andrew J. Constable Andrew J. Constable Laura Ghigliotti Rowan Trebilco Rowan Trebilco Cassandra M. Brooks Cédric Cotte Thomas Desvignes Tracey Dornan Tracey Dornan Christopher D. Jones Philippe Koubbi Philippe Koubbi Ryan A. Saunders Anneli Strobel Marino Vacchi Anton P. van de Putte Anton P. van de Putte Andrea Walters Claire M. Waluda Briannyn L. Woods José C. Xavier José C. Xavier |
| author_sort | Jilda Alicia Caccavo |
| collection | DOAJ |
| 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 to these challenges, given their varying life histories, environmental dependencies, and resiliencies, necessitates regular assessment to inform conservation and management decisions. Urgent attention is needed to determine whether the current management strategies are suitably precautionary to achieve conservation objectives in light of the impending changes to the ecosystem. |
| first_indexed | 2024-12-17T06:38:23Z |
| format | Article |
| id | doaj.art-93a86af3106445779ee1ad9559f6f54e |
| institution | Directory Open Access Journal |
| issn | 2296-701X |
| language | English |
| last_indexed | 2024-12-17T06:38:23Z |
| publishDate | 2021-06-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Ecology and Evolution |
| spelling | doaj.art-93a86af3106445779ee1ad9559f6f54e2022-12-21T21:59:56ZengFrontiers Media S.A.Frontiers in Ecology and Evolution2296-701X2021-06-01910.3389/fevo.2021.624918624918Productivity and Change in Fish and Squid in the Southern OceanJilda Alicia Caccavo0Jilda Alicia Caccavo1Jilda Alicia Caccavo2Henrik Christiansen3Andrew J. Constable4Andrew J. Constable5Laura Ghigliotti6Rowan Trebilco7Rowan Trebilco8Cassandra M. Brooks9Cédric Cotte10Thomas Desvignes11Tracey Dornan12Tracey Dornan13Christopher D. Jones14Philippe Koubbi15Philippe Koubbi16Ryan A. Saunders17Anneli Strobel18Marino Vacchi19Anton P. van de Putte20Anton P. van de Putte21Andrea Walters22Claire M. Waluda23Briannyn L. Woods24José C. Xavier25José C. Xavier26Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, GermanyBerlin Center for Genomics in Biodiversity Research, Berlin, GermanyDepartment of Evolutionary Genetics, Leibniz Institute for Zoo and Wildlife Research, Berlin, GermanyLaboratory of Biodiversity and Evolutionary Genomics, KU Leuven, Leuven, BelgiumAustralian Antarctic Division, Kingston, TAS, AustraliaCentre for Marine Socioecology, University of Tasmania, Hobart, TAS, AustraliaInstitute for the Study of the Anthropic Impacts and the Sustainability in the Marine Environment (IAS), National Research Council of Italy (CNR), Genoa, ItalyCentre for Marine Socioecology, University of Tasmania, Hobart, TAS, AustraliaOceans and Atmosphere, Commonwealth Scientific and Industrial Research Organisation (CSIRO), Hobart, TAS, AustraliaEnvironmental Studies Program, University of Colorado, Boulder, Boulder, CO, United States0LOCEAN Laboratory, Sorbonne Universités (UPMC, University Paris 06)-CNRS-IRD-MNHN, Paris, France1Institute of Neuroscience, University of Oregon, Eugene, OR, United States2British Antarctic Survey, Cambridge, United Kingdom3School of Biological Sciences, University of Bristol, Bristol, United Kingdom4Southwest Fisheries Science Center, National Marine Fisheries Service, NOAA Fisheries, La Jolla, CA, United States5UFR 918 Terre Environnement Biodiversité, Sorbonne Université, Paris, France6Channel and North Sea Fisheries Research Unit, IFREMER, Boulogne-sur-Mer, France2British Antarctic Survey, Cambridge, United KingdomAlfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven, GermanyInstitute for the Study of the Anthropic Impacts and the Sustainability in the Marine Environment (IAS), National Research Council of Italy (CNR), Genoa, Italy7Royal Belgian Institute of Natural Sciences, Brussels, Belgium8Universit libre de Bruxelles (ULB), Brussels, Belgium9Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia2British Antarctic Survey, Cambridge, United Kingdom9Institute for Marine and Antarctic Studies, University of Tasmania, Hobart, TAS, Australia2British Antarctic Survey, Cambridge, United Kingdom0Department of Life Sciences, Marine and Environmental Sciences Centre, University of Coimbra, Coimbra, PortugalSouthern 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 to these challenges, given their varying life histories, environmental dependencies, and resiliencies, necessitates regular assessment to inform conservation and management decisions. Urgent attention is needed to determine whether the current management strategies are suitably precautionary to achieve conservation objectives in light of the impending changes to the ecosystem.https://www.frontiersin.org/articles/10.3389/fevo.2021.624918/fullmarine ecosystem assessmentclimate changeconservation managementAntarcticfisheriesnotothenioids |
| spellingShingle | Jilda Alicia Caccavo Jilda Alicia Caccavo Jilda Alicia Caccavo Henrik Christiansen Andrew J. Constable Andrew J. Constable Laura Ghigliotti Rowan Trebilco Rowan Trebilco Cassandra M. Brooks Cédric Cotte Thomas Desvignes Tracey Dornan Tracey Dornan Christopher D. Jones Philippe Koubbi Philippe Koubbi Ryan A. Saunders Anneli Strobel Marino Vacchi Anton P. van de Putte Anton P. van de Putte Andrea Walters Claire M. Waluda Briannyn L. Woods José C. Xavier José C. Xavier Productivity and Change in Fish and Squid in the Southern Ocean Frontiers in Ecology and Evolution marine ecosystem assessment climate change conservation management Antarctic fisheries notothenioids |
| title | 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_short | Productivity and Change in Fish and Squid in the Southern Ocean |
| title_sort | productivity and change in fish and squid in the southern ocean |
| topic | marine ecosystem assessment climate change conservation management Antarctic fisheries notothenioids |
| url | https://www.frontiersin.org/articles/10.3389/fevo.2021.624918/full |
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