Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin
The Barents Sea stock of capelin (Mallotus villosus) has suffered three major collapses (>90% reduction) since 1985 due to recruitment failures. As capelin is a key species in the area, these population collapses have had major ecosystem consequences. By analysing data on spawner biomass and thre...
Published in: | Canadian Journal of Fisheries and Aquatic Sciences |
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Language: | English |
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Online Access: | http://hdl.handle.net/11250/108523 https://doi.org/10.1139/F10-064 |
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ftimr:oai:imr.brage.unit.no:11250/108523 2023-05-15T14:30:27+02:00 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 Endre Gjøsæter, Harald Ottersen, Geir Eikeset, Anne Maria Stenseth, Nils Christian 2010-08-10 application/pdf http://hdl.handle.net/11250/108523 https://doi.org/10.1139/F10-064 eng eng NRC Research Press urn:issn:1205-7533 http://hdl.handle.net/11250/108523 http://dx.doi.org/10.1139/F10-064 1363-1375 67 Canadian Journal of Fisheries and Aquatic Sciences 9 Barents Sea Barentshavet capelin lodde stock collapse bestandssammenbrudd VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Journal article Peer reviewed 2010 ftimr https://doi.org/10.1139/F10-064 2021-09-23T20:14:46Z The Barents Sea stock of capelin (Mallotus villosus) has suffered three major collapses (>90% reduction) since 1985 due to recruitment failures. As capelin is a key species in the area, these population collapses have had major ecosystem consequences. By analysing data on spawner biomass and three recruitment stages (larvae, 0-group, and 1-year-olds), we suggest that much of the recruitment failures are caused by predation from herring (Clupea harengus) and 0-group and adult Northeast Arctic cod (Gadus morhua). Recruitment is furthermore positively correlated with sea temperatures in winter and spring. Harvesting of maturing capelin on their way to the spawning grounds reduced the abundance of larvae significantly, but this reduction to a large extent is compensated for later in life, as mortality is strongly density-dependent between the larval stage and age 1. Altogether, our study indicates a very high importance of trophic interactions, consistent with similar findings in other high-latitude marine ecosystems. Article in Journal/Newspaper Arctic cod Arctic Barents Sea Barentshav* Gadus morhua Northeast Arctic cod Institute for Marine Research: Brage IMR Arctic Barents Sea Canadian Journal of Fisheries and Aquatic Sciences 67 9 1363 1375 |
institution |
Open Polar |
collection |
Institute for Marine Research: Brage IMR |
op_collection_id |
ftimr |
language |
English |
topic |
Barents Sea Barentshavet capelin lodde stock collapse bestandssammenbrudd VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
spellingShingle |
Barents Sea Barentshavet capelin lodde stock collapse bestandssammenbrudd VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 Hjermann, Dag Ø. Bogstad, Bjarte Dingsør, Gjert Endre Gjøsæter, Harald Ottersen, Geir Eikeset, Anne Maria Stenseth, Nils Christian Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin |
topic_facet |
Barents Sea Barentshavet capelin lodde stock collapse bestandssammenbrudd VDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921 |
description |
The Barents Sea stock of capelin (Mallotus villosus) has suffered three major collapses (>90% reduction) since 1985 due to recruitment failures. As capelin is a key species in the area, these population collapses have had major ecosystem consequences. By analysing data on spawner biomass and three recruitment stages (larvae, 0-group, and 1-year-olds), we suggest that much of the recruitment failures are caused by predation from herring (Clupea harengus) and 0-group and adult Northeast Arctic cod (Gadus morhua). Recruitment is furthermore positively correlated with sea temperatures in winter and spring. Harvesting of maturing capelin on their way to the spawning grounds reduced the abundance of larvae significantly, but this reduction to a large extent is compensated for later in life, as mortality is strongly density-dependent between the larval stage and age 1. Altogether, our study indicates a very high importance of trophic interactions, consistent with similar findings in other high-latitude marine ecosystems. |
format |
Article in Journal/Newspaper |
author |
Hjermann, Dag Ø. Bogstad, Bjarte Dingsør, Gjert Endre Gjøsæter, Harald Ottersen, Geir Eikeset, Anne Maria Stenseth, Nils Christian |
author_facet |
Hjermann, Dag Ø. Bogstad, Bjarte Dingsør, Gjert Endre Gjøsæter, Harald Ottersen, Geir Eikeset, Anne Maria Stenseth, Nils Christian |
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 |
NRC Research Press |
publishDate |
2010 |
url |
http://hdl.handle.net/11250/108523 https://doi.org/10.1139/F10-064 |
geographic |
Arctic Barents Sea |
geographic_facet |
Arctic Barents Sea |
genre |
Arctic cod Arctic Barents Sea Barentshav* Gadus morhua Northeast Arctic cod |
genre_facet |
Arctic cod Arctic Barents Sea Barentshav* Gadus morhua Northeast Arctic cod |
op_source |
1363-1375 67 Canadian Journal of Fisheries and Aquatic Sciences 9 |
op_relation |
urn:issn:1205-7533 http://hdl.handle.net/11250/108523 http://dx.doi.org/10.1139/F10-064 |
op_doi |
https://doi.org/10.1139/F10-064 |
container_title |
Canadian Journal of Fisheries and Aquatic Sciences |
container_volume |
67 |
container_issue |
9 |
container_start_page |
1363 |
op_container_end_page |
1375 |
_version_ |
1766304294957481984 |