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dc.contributor.authorDaase, Malin
dc.contributor.authorSøreide, Janne E.
dc.date.accessioned2021-12-23T09:46:03Z
dc.date.available2021-12-23T09:46:03Z
dc.date.issued2021-06-04
dc.description.abstractRecent observations from high-latitude marine ecosystems indicate that non-consumptive mortality may be particularly high in Arctic zooplankton during the polar night. Here we have estimated the contribution of dead organisms to the mesozooplankton community in the high Arctic (Svalbard 78–81oN) during the polar night (January), in spring (May) and in late summer (end of August). To identify in situ dead organisms, we used Neutral Red Stain. The dead zooplankton fraction consisted mainly of copepods, while the contribution of dead non-copepods was low in all seasons. The absolute abundance of dead copepods varied little between seasons; however, the relative contribution of dead copepods was highest in January with 11–35% of the copepods classified as dead, in contrast to 2–12% in spring and summer. Furthermore, there were species-specific differences: copepods of the genus Calanus contributed more to the dead fraction of the copepod community during the polar night compared to spring and summer, leading to a higher “dead” biomass in winter. We conclude that non-consumptive winter mortality is considerable in calanoid copepods in the Arctic and an important but so far neglected component of the passive carbon flux, providing carbon in larger portions for higher trophic level consumers during the low-productive winter.en_US
dc.identifier.citationDaase, Søreide. Seasonal variability in non-consumptive mortality of Arctic zooplankton. Journal of Plankton Research. 2021;43(4):565-585en_US
dc.identifier.cristinIDFRIDAID 1928134
dc.identifier.doi10.1093/plankt/fbab042
dc.identifier.issn0142-7873
dc.identifier.issn1464-3774
dc.identifier.urihttps://hdl.handle.net/10037/23494
dc.language.isoengen_US
dc.publisherOxford University Pressen_US
dc.relation.journalJournal of Plankton Research
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/POLARPROG/244319/Norway/Arctic Ocean ecosystems - Applied technology, Biological interactions and Consequences in an era of abrupt climate change//en_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/KLIMAFORSK/300333/Norway/The impact of artificial light on arctic marine organisms and ecosystems during the polar night//en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2021 The Author(s)en_US
dc.subjectVDP::Mathematics and natural science: 400::Zoology and botany: 480en_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480en_US
dc.titleSeasonal variability in non-consumptive mortality of Arctic zooplanktonen_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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