Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin ...
No abstracts are to be cited without prior reference to the author.In the Barents Sea, capelin is a key food item for the North-East Arctic cod stock. This capelin stock has had very unstable population dynamics since 1985, with recruitment failures leading to three major collapses of the stock (>...
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ASC 2009 - Theme session C
2024
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Online Access: | https://dx.doi.org/10.17895/ices.pub.25070414 https://ices-library.figshare.com/articles/conference_contribution/Trophic_interactions_affecting_a_key_ecosystem_component_a_multi-stage_analysis_of_the_recruitment_of_the_Barents_Sea_capelin/25070414 |
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ftdatacite:10.17895/ices.pub.25070414 2024-03-31T07:49:54+00:00 Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin ... Hjermann, Dag Ø. Bogstad, Bjarte Dingsør, Gjert E. Gjøsæter, Harald Ottersen, Geir Eikeset, Anne Maria Stenseth, Nils Chr. 2024 https://dx.doi.org/10.17895/ices.pub.25070414 https://ices-library.figshare.com/articles/conference_contribution/Trophic_interactions_affecting_a_key_ecosystem_component_a_multi-stage_analysis_of_the_recruitment_of_the_Barents_Sea_capelin/25070414 unknown ASC 2009 - Theme session C https://ices-library.figshare.com/ICES-ASC-2009/groups ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx Ecosystem observation, processes and dynamics Pressures, impacts, conservation, and management Conference contribution article CreativeWork Other 2024 ftdatacite https://doi.org/10.17895/ices.pub.25070414 2024-03-04T12:15:15Z No abstracts are to be cited without prior reference to the author.In the Barents Sea, capelin is a key food item for the North-East Arctic cod stock. This capelin stock has had very unstable population dynamics since 1985, with recruitment failures leading to three major collapses of the stock (>90% reduction of the stock size), resulting in decreased growth and survival of cod. Here we analyze in detail how predation and harvest affects the recruitment of capelin, using data on three different stages (i.e., larvae, zero-group and 1-year-olds) through the first 1.5 years of the capelin's life. We demonstrate that both herring predation (on capelin larvae) and cod predation (both on spawners and on offspring) has had major negative effects on capelin recruitment. Mortality is furthermore demonstrated to be strongly density-dependent, and is lower when temperatures are high – probably due to higher food availability for capelin. Harvesting maturing capelin on the way to the spawning grounds did affect the ... Conference Object Arctic cod Arctic Barents Sea DataCite Metadata Store (German National Library of Science and Technology) Arctic Barents Sea |
institution |
Open Polar |
collection |
DataCite Metadata Store (German National Library of Science and Technology) |
op_collection_id |
ftdatacite |
language |
unknown |
topic |
Ecosystem observation, processes and dynamics Pressures, impacts, conservation, and management |
spellingShingle |
Ecosystem observation, processes and dynamics Pressures, impacts, conservation, and management Hjermann, Dag Ø. Bogstad, Bjarte Dingsør, Gjert E. Gjøsæter, Harald Ottersen, Geir Eikeset, Anne Maria Stenseth, Nils Chr. Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin ... |
topic_facet |
Ecosystem observation, processes and dynamics Pressures, impacts, conservation, and management |
description |
No abstracts are to be cited without prior reference to the author.In the Barents Sea, capelin is a key food item for the North-East Arctic cod stock. This capelin stock has had very unstable population dynamics since 1985, with recruitment failures leading to three major collapses of the stock (>90% reduction of the stock size), resulting in decreased growth and survival of cod. Here we analyze in detail how predation and harvest affects the recruitment of capelin, using data on three different stages (i.e., larvae, zero-group and 1-year-olds) through the first 1.5 years of the capelin's life. We demonstrate that both herring predation (on capelin larvae) and cod predation (both on spawners and on offspring) has had major negative effects on capelin recruitment. Mortality is furthermore demonstrated to be strongly density-dependent, and is lower when temperatures are high – probably due to higher food availability for capelin. Harvesting maturing capelin on the way to the spawning grounds did affect the ... |
format |
Conference Object |
author |
Hjermann, Dag Ø. Bogstad, Bjarte Dingsør, Gjert E. Gjøsæter, Harald Ottersen, Geir Eikeset, Anne Maria Stenseth, Nils Chr. |
author_facet |
Hjermann, Dag Ø. Bogstad, Bjarte Dingsør, Gjert E. Gjøsæter, Harald Ottersen, Geir Eikeset, Anne Maria Stenseth, Nils Chr. |
author_sort |
Hjermann, Dag Ø. |
title |
Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin ... |
title_short |
Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin ... |
title_full |
Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin ... |
title_fullStr |
Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin ... |
title_full_unstemmed |
Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin ... |
title_sort |
trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the barents sea capelin ... |
publisher |
ASC 2009 - Theme session C |
publishDate |
2024 |
url |
https://dx.doi.org/10.17895/ices.pub.25070414 https://ices-library.figshare.com/articles/conference_contribution/Trophic_interactions_affecting_a_key_ecosystem_component_a_multi-stage_analysis_of_the_recruitment_of_the_Barents_Sea_capelin/25070414 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic cod Arctic Barents Sea |
genre_facet |
Arctic cod Arctic Barents Sea |
op_relation |
https://ices-library.figshare.com/ICES-ASC-2009/groups |
op_rights |
ICES Custom Licence https://www.ices.dk/Pages/library_policies.aspx |
op_doi |
https://doi.org/10.17895/ices.pub.25070414 |
_version_ |
1795027952513056768 |