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dc.contributor.authorKunisch, Erin
dc.contributor.authorGraeve, Martin
dc.contributor.authorGradinger, Rolf Rudolf
dc.contributor.authorFlores, Hauke
dc.contributor.authorVarpe, Øystein
dc.contributor.authorBluhm, Bodil
dc.date.accessioned2023-08-14T12:02:42Z
dc.date.available2023-08-14T12:02:42Z
dc.date.created2023-07-27T10:30:26Z
dc.date.issued2023
dc.identifier.issn0024-3590
dc.identifier.urihttps://hdl.handle.net/11250/3083863
dc.description.abstractDuring the productive polar day, zooplankton and sea-ice amphipods fulfill a critical role in energy transfer from primary producers to higher trophic-level species in Arctic marine ecosystems. Recent polar night studies on zooplankton and sea-ice amphipods suggest higher levels of biological activity than previously assumed. However, it is unknown if these invertebrates maintain polar night activity on stored lipids, opportunistic feeding, or a combination of both. To assess how zooplankton (copepods, amphipods, and krill) and sea-ice amphipods support themselves on seasonally varying resources, we studied their lipid classes, fatty acid compositions, and compound-specific stable isotopes of trophic biomarker fatty acids during polar day (June/July) and polar night (January). Lipid storage and fatty acid results confirm previously described dietary sources in all species during polar day. We found evidence of polar night feeding in all species, including shifts from herbivory to omnivory. Sympagic-, pelagic-, and Calanus spp.-derived carbon sources supported zooplankton and sea-ice amphipods in both seasons. We provide a first indication of polar night feeding of sea-ice amphipods in the pelagic realm.en_US
dc.language.isoengen_US
dc.publisherWileyen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.titleWhat we do in the dark: Prevalence of omnivorous feeding activity in Arctic zooplankton during polar nighten_US
dc.typeJournal articleen_US
dc.typePeer revieweden_US
dc.description.versionpublishedVersionen_US
dc.rights.holderCopyright 2023 The Author(s)en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1
dc.identifier.doi10.1002/lno.12389
dc.identifier.cristin2163739
dc.source.journalLimnology and Oceanographyen_US
dc.identifier.citationLimnology and Oceanography. 2023.en_US


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Navngivelse 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Navngivelse 4.0 Internasjonal