Effects of climate and spawning stock structure on the spatial distribution of Northeast Arctic cod larvae
The spatial distribution of fish early life stages can impact recruitment at later stages and affect population size and resilience. Northeast Arctic (NEA) cod spawning occurs along the Norwegian coast. Eggs, larvae, and pelagic juveniles drift near-surface towards the Barents Sea nursery area. In t...
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Language: | English |
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Online Access: | https://hdl.handle.net/11250/2682802 https://doi.org/10.1093/icesjms/fsaa057 |
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ftimr:oai:imr.brage.unit.no:11250/2682802 2023-05-15T14:30:28+02:00 Effects of climate and spawning stock structure on the spatial distribution of Northeast Arctic cod larvae Endo, Clarissa Vikebø, Frode Bendiksen Yaragina, Natalia A. Hjøllo, Solfrid Sætre Stige, Leif Christian 2020 application/pdf https://hdl.handle.net/11250/2682802 https://doi.org/10.1093/icesjms/fsaa057 eng eng Norges forskningsråd: 280468 urn:issn:1054-3139 https://hdl.handle.net/11250/2682802 https://doi.org/10.1093/icesjms/fsaa057 cristin:1826997 ICES Journal of Marine Science Peer reviewed Journal article 2020 ftimr https://doi.org/10.1093/icesjms/fsaa057 2021-09-23T20:15:55Z The spatial distribution of fish early life stages can impact recruitment at later stages and affect population size and resilience. Northeast Arctic (NEA) cod spawning occurs along the Norwegian coast. Eggs, larvae, and pelagic juveniles drift near-surface towards the Barents Sea nursery area. In this study, a 35-year long time series of NEA cod larvae data was analysed in combination with factors that potentially may affect the distribution of eggs and larvae. These factors included biological aspects of the spawning stock, and environmental variables, such as water temperature, wind, ocean current, and prey abundance. Our aim was to shed light on how these factors influence larval abundance and distribution and how larval abundance and distribution influenced recruitment at age 3. We found that biomass and mean weight of the spawners were positively associated with larval abundance and that a high liver condition index of the spawners was associated with a north-easterly distribution of the larvae. The environmental variables showed generally weak or no correlations with abundance or distribution of larvae. Lastly, we found significant association between larval abundance and year-class abundance at age 3, while the spatial distribution metrics of the larvae, i.e. distribution extent, mean longitude, and mean latitude, showed no significant association with future year-class abundance. acceptedVersion Article in Journal/Newspaper Arctic cod Arctic Barents Sea Northeast Arctic cod Institute for Marine Research: Brage IMR Arctic Barents Sea ICES Journal of Marine Science 78 2 666 679 |
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Open Polar |
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Institute for Marine Research: Brage IMR |
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language |
English |
description |
The spatial distribution of fish early life stages can impact recruitment at later stages and affect population size and resilience. Northeast Arctic (NEA) cod spawning occurs along the Norwegian coast. Eggs, larvae, and pelagic juveniles drift near-surface towards the Barents Sea nursery area. In this study, a 35-year long time series of NEA cod larvae data was analysed in combination with factors that potentially may affect the distribution of eggs and larvae. These factors included biological aspects of the spawning stock, and environmental variables, such as water temperature, wind, ocean current, and prey abundance. Our aim was to shed light on how these factors influence larval abundance and distribution and how larval abundance and distribution influenced recruitment at age 3. We found that biomass and mean weight of the spawners were positively associated with larval abundance and that a high liver condition index of the spawners was associated with a north-easterly distribution of the larvae. The environmental variables showed generally weak or no correlations with abundance or distribution of larvae. Lastly, we found significant association between larval abundance and year-class abundance at age 3, while the spatial distribution metrics of the larvae, i.e. distribution extent, mean longitude, and mean latitude, showed no significant association with future year-class abundance. acceptedVersion |
format |
Article in Journal/Newspaper |
author |
Endo, Clarissa Vikebø, Frode Bendiksen Yaragina, Natalia A. Hjøllo, Solfrid Sætre Stige, Leif Christian |
spellingShingle |
Endo, Clarissa Vikebø, Frode Bendiksen Yaragina, Natalia A. Hjøllo, Solfrid Sætre Stige, Leif Christian Effects of climate and spawning stock structure on the spatial distribution of Northeast Arctic cod larvae |
author_facet |
Endo, Clarissa Vikebø, Frode Bendiksen Yaragina, Natalia A. Hjøllo, Solfrid Sætre Stige, Leif Christian |
author_sort |
Endo, Clarissa |
title |
Effects of climate and spawning stock structure on the spatial distribution of Northeast Arctic cod larvae |
title_short |
Effects of climate and spawning stock structure on the spatial distribution of Northeast Arctic cod larvae |
title_full |
Effects of climate and spawning stock structure on the spatial distribution of Northeast Arctic cod larvae |
title_fullStr |
Effects of climate and spawning stock structure on the spatial distribution of Northeast Arctic cod larvae |
title_full_unstemmed |
Effects of climate and spawning stock structure on the spatial distribution of Northeast Arctic cod larvae |
title_sort |
effects of climate and spawning stock structure on the spatial distribution of northeast arctic cod larvae |
publishDate |
2020 |
url |
https://hdl.handle.net/11250/2682802 https://doi.org/10.1093/icesjms/fsaa057 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic cod Arctic Barents Sea Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Barents Sea Northeast Arctic cod |
op_source |
ICES Journal of Marine Science |
op_relation |
Norges forskningsråd: 280468 urn:issn:1054-3139 https://hdl.handle.net/11250/2682802 https://doi.org/10.1093/icesjms/fsaa057 cristin:1826997 |
op_doi |
https://doi.org/10.1093/icesjms/fsaa057 |
container_title |
ICES Journal of Marine Science |
container_volume |
78 |
container_issue |
2 |
container_start_page |
666 |
op_container_end_page |
679 |
_version_ |
1766304312473944064 |