Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017)
Young-of-the-year (0-group) fish in the Barents Sea have been investigated in an annual joint Norwegian-Russian pelagic trawl survey in autumn, using a standardized procedure since 1980. We use a conceptual framework of ‘upstream’ spawning areas and ‘downstream’ nursery areas, recorded as 0-group di...
Published in: | Progress in Oceanography |
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Language: | English |
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Online Access: | https://hdl.handle.net/11250/3000083 https://doi.org/10.1016/j.pocean.2022.102845 |
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ftimr:oai:imr.brage.unit.no:11250/3000083 2023-05-15T15:07:14+02:00 Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017) Skjoldal, Hein Rune Eriksen, Elena Gjøsæter, Harald Skagseth, Øystein Prozorkevich, Dmitry A. Lien, Vidar Surén 2022 application/pdf https://hdl.handle.net/11250/3000083 https://doi.org/10.1016/j.pocean.2022.102845 eng eng urn:issn:0079-6611 https://hdl.handle.net/11250/3000083 https://doi.org/10.1016/j.pocean.2022.102845 cristin:2033794 206 Progress in Oceanography Peer reviewed Journal article 2022 ftimr https://doi.org/10.1016/j.pocean.2022.102845 2022-06-29T22:40:30Z Young-of-the-year (0-group) fish in the Barents Sea have been investigated in an annual joint Norwegian-Russian pelagic trawl survey in autumn, using a standardized procedure since 1980. We use a conceptual framework of ‘upstream’ spawning areas and ‘downstream’ nursery areas, recorded as 0-group distribution in the Barents Sea, to address spatial (geographical) and temporal (1980–2017) variation in 0-group length. Four boreal species (cod Gadus morhua, haddock Melanogrammus aeglefinus, herring Clupea harengus, and deepwater redfish Sebastes mentella) tended to have smaller 0-group individuals in the northern and eastern parts of the Barents Sea, with the largest individuals found in the central part where they were also most abundant. We interpret this to reflect slower growth as the ‘fore-runners’ of the seasonal cohort of juveniles are transported into colder waters (through lateral mixing). The Arctic species (capelin Mallotus villosus and polar cod Boreogadus saida) showed a different pattern with increasing 0-group length with increasing distance away from the spawning areas, seen most clearly for capelin. The longer juveniles in northern areas are probably older and stemming from early spawning. publishedVersion Article in Journal/Newspaper Arctic Barents Sea Boreogadus saida Gadus morhua polar cod Sebastes mentella Institute for Marine Research: Brage IMR Arctic Barents Sea Progress in Oceanography 206 102845 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
description |
Young-of-the-year (0-group) fish in the Barents Sea have been investigated in an annual joint Norwegian-Russian pelagic trawl survey in autumn, using a standardized procedure since 1980. We use a conceptual framework of ‘upstream’ spawning areas and ‘downstream’ nursery areas, recorded as 0-group distribution in the Barents Sea, to address spatial (geographical) and temporal (1980–2017) variation in 0-group length. Four boreal species (cod Gadus morhua, haddock Melanogrammus aeglefinus, herring Clupea harengus, and deepwater redfish Sebastes mentella) tended to have smaller 0-group individuals in the northern and eastern parts of the Barents Sea, with the largest individuals found in the central part where they were also most abundant. We interpret this to reflect slower growth as the ‘fore-runners’ of the seasonal cohort of juveniles are transported into colder waters (through lateral mixing). The Arctic species (capelin Mallotus villosus and polar cod Boreogadus saida) showed a different pattern with increasing 0-group length with increasing distance away from the spawning areas, seen most clearly for capelin. The longer juveniles in northern areas are probably older and stemming from early spawning. publishedVersion |
format |
Article in Journal/Newspaper |
author |
Skjoldal, Hein Rune Eriksen, Elena Gjøsæter, Harald Skagseth, Øystein Prozorkevich, Dmitry A. Lien, Vidar Surén |
spellingShingle |
Skjoldal, Hein Rune Eriksen, Elena Gjøsæter, Harald Skagseth, Øystein Prozorkevich, Dmitry A. Lien, Vidar Surén Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017) |
author_facet |
Skjoldal, Hein Rune Eriksen, Elena Gjøsæter, Harald Skagseth, Øystein Prozorkevich, Dmitry A. Lien, Vidar Surén |
author_sort |
Skjoldal, Hein Rune |
title |
Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017) |
title_short |
Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017) |
title_full |
Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017) |
title_fullStr |
Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017) |
title_full_unstemmed |
Recruitment variability of fish stocks in the Barents Sea: Spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017) |
title_sort |
recruitment variability of fish stocks in the barents sea: spatial and temporal variation in 0-group fish length of six commercial species during recent decades of warming (1980–2017) |
publishDate |
2022 |
url |
https://hdl.handle.net/11250/3000083 https://doi.org/10.1016/j.pocean.2022.102845 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic Barents Sea Boreogadus saida Gadus morhua polar cod Sebastes mentella |
genre_facet |
Arctic Barents Sea Boreogadus saida Gadus morhua polar cod Sebastes mentella |
op_source |
206 Progress in Oceanography |
op_relation |
urn:issn:0079-6611 https://hdl.handle.net/11250/3000083 https://doi.org/10.1016/j.pocean.2022.102845 cristin:2033794 |
op_doi |
https://doi.org/10.1016/j.pocean.2022.102845 |
container_title |
Progress in Oceanography |
container_volume |
206 |
container_start_page |
102845 |
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1766338775790649344 |