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dc.contributor.authorHjermann, Dag Ø.
dc.contributor.authorBogstad, Bjarte
dc.contributor.authorDingsør, Gjert Endre
dc.contributor.authorGjøsæter, Harald
dc.contributor.authorOttersen, Geir
dc.contributor.authorEikeset, Anne Maria
dc.contributor.authorStenseth, Nils Christian
dc.date.accessioned2010-10-21T07:19:38Z
dc.date.available2010-10-21T07:19:38Z
dc.date.issued2010-08-10
dc.identifier.issn1205-7533
dc.identifier.urihttp://hdl.handle.net/11250/117100
dc.description.abstractThe 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.en_US
dc.language.isoengen_US
dc.publisherNRC Research Pressen_US
dc.subjectBarents Seaen_US
dc.subjectBarentshaveten_US
dc.subjectcapelinen_US
dc.subjectloddeen_US
dc.subjectstock collapseen_US
dc.subjectbestandssammenbrudden_US
dc.titleTrophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelinen_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.subject.nsiVDP::Agriculture and fishery disciplines: 900::Fisheries science: 920::Resource biology: 921en_US
dc.source.pagenumber1363-1375en_US
dc.source.volume67
dc.source.journalCanadian Journal of Fisheries and Aquatic Sciences
dc.source.issue9
dc.identifier.doihttp://dx.doi.org/10.1139/F10-064


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