Who eats whom in the Barents Sea?
An overview of the estimates of consumption by predators on the main fish stocks in the Barents Sea is given. The main predators are cod (Gadus morhua), harp seal (Phoca groenlandica) and minke whale (Balaenoptera acutorostrata). The results indicate that cod is the most important predator, consumin...
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Language: | English |
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Septentrio Academic Publishing
2000
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Online Access: | https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2975 https://doi.org/10.7557/3.2975 |
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ftunitroemsoe:oai:ojs.henry.ub.uit.no:article/2975 2023-05-15T15:36:05+02:00 Who eats whom in the Barents Sea? Bogstad, Bjarte Haug, Tore Mehl, Sigbjørn 2000-05-29 application/pdf https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2975 https://doi.org/10.7557/3.2975 eng eng Septentrio Academic Publishing https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2975/2848 https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2975 doi:10.7557/3.2975 Copyright (c) 2000 Bjarte Bogstad, Tore Haug, Sigbjørn Mehl http://creativecommons.org/licenses/by/3.0/ CC-BY NAMMCO Scientific Publications; Vol 2: Minke whales, harp and hooded seals: Major predators in the North Atlantic Ecosystem; 98-119 2309-2491 1560-2206 10.7557/3.2 predators consumption fish stocks minke whales Balaenoptera acutorostrata harp seal Phoca groenlandica cod Gadus morhua multispecies model info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion 2000 ftunitroemsoe https://doi.org/10.7557/3.2975 https://doi.org/10.7557/3.2 2021-08-16T16:41:30Z An overview of the estimates of consumption by predators on the main fish stocks in the Barents Sea is given. The main predators are cod (Gadus morhua), harp seal (Phoca groenlandica) and minke whale (Balaenoptera acutorostrata). The results indicate that cod is the most important predator, consuming about as much food annually as harp seals and minke whales combined. The consumption estimates, together with data on the amount of fish removed by commercial fisheries, are compared to estimates of the abundance and removal through natural mortality of the various species of fish prey. The consistency between these estimates is discussed. The natural mortality values for cod and haddock used in assessments are found to be reasonably consistent with the consumption estimates. The consumption of capelin is found to be higher than what is available for predation in years of low capelin abundance, while in years of high herring abundance the consumption of herring does not explain all the mortality. The way in which the consumption estimates are and can be utilised in theassessment and management of fish stocks in the Barents Sea using multispecies models and approaches is described. Article in Journal/Newspaper Balaenoptera acutorostrata Barents Sea Gadus morhua Harp Seal minke whale Phoca groenlandica University of Tromsø: Septentrio Academic Publishing Barents Sea NAMMCO Scientific Publications 2 98 |
institution |
Open Polar |
collection |
University of Tromsø: Septentrio Academic Publishing |
op_collection_id |
ftunitroemsoe |
language |
English |
topic |
predators consumption fish stocks minke whales Balaenoptera acutorostrata harp seal Phoca groenlandica cod Gadus morhua multispecies model |
spellingShingle |
predators consumption fish stocks minke whales Balaenoptera acutorostrata harp seal Phoca groenlandica cod Gadus morhua multispecies model Bogstad, Bjarte Haug, Tore Mehl, Sigbjørn Who eats whom in the Barents Sea? |
topic_facet |
predators consumption fish stocks minke whales Balaenoptera acutorostrata harp seal Phoca groenlandica cod Gadus morhua multispecies model |
description |
An overview of the estimates of consumption by predators on the main fish stocks in the Barents Sea is given. The main predators are cod (Gadus morhua), harp seal (Phoca groenlandica) and minke whale (Balaenoptera acutorostrata). The results indicate that cod is the most important predator, consuming about as much food annually as harp seals and minke whales combined. The consumption estimates, together with data on the amount of fish removed by commercial fisheries, are compared to estimates of the abundance and removal through natural mortality of the various species of fish prey. The consistency between these estimates is discussed. The natural mortality values for cod and haddock used in assessments are found to be reasonably consistent with the consumption estimates. The consumption of capelin is found to be higher than what is available for predation in years of low capelin abundance, while in years of high herring abundance the consumption of herring does not explain all the mortality. The way in which the consumption estimates are and can be utilised in theassessment and management of fish stocks in the Barents Sea using multispecies models and approaches is described. |
format |
Article in Journal/Newspaper |
author |
Bogstad, Bjarte Haug, Tore Mehl, Sigbjørn |
author_facet |
Bogstad, Bjarte Haug, Tore Mehl, Sigbjørn |
author_sort |
Bogstad, Bjarte |
title |
Who eats whom in the Barents Sea? |
title_short |
Who eats whom in the Barents Sea? |
title_full |
Who eats whom in the Barents Sea? |
title_fullStr |
Who eats whom in the Barents Sea? |
title_full_unstemmed |
Who eats whom in the Barents Sea? |
title_sort |
who eats whom in the barents sea? |
publisher |
Septentrio Academic Publishing |
publishDate |
2000 |
url |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2975 https://doi.org/10.7557/3.2975 |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Balaenoptera acutorostrata Barents Sea Gadus morhua Harp Seal minke whale Phoca groenlandica |
genre_facet |
Balaenoptera acutorostrata Barents Sea Gadus morhua Harp Seal minke whale Phoca groenlandica |
op_source |
NAMMCO Scientific Publications; Vol 2: Minke whales, harp and hooded seals: Major predators in the North Atlantic Ecosystem; 98-119 2309-2491 1560-2206 10.7557/3.2 |
op_relation |
https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2975/2848 https://septentrio.uit.no/index.php/NAMMCOSP/article/view/2975 doi:10.7557/3.2975 |
op_rights |
Copyright (c) 2000 Bjarte Bogstad, Tore Haug, Sigbjørn Mehl http://creativecommons.org/licenses/by/3.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.7557/3.2975 https://doi.org/10.7557/3.2 |
container_title |
NAMMCO Scientific Publications |
container_volume |
2 |
container_start_page |
98 |
_version_ |
1766366426277347328 |