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dc.contributor.authorvan der Jagt, Helga
dc.contributor.authorWiedmann, Ingrid
dc.contributor.authorHildebrandt, Nicole
dc.contributor.authorNiehoff, Barbara
dc.contributor.authorIversen, Morten H.
dc.date.accessioned2020-10-29T09:39:39Z
dc.date.available2020-10-29T09:39:39Z
dc.date.issued2020-09-24
dc.description.abstractUp to 95% of the oceanic primary production is recycled within the upper few hundred meters of the water column. Marine snow and zooplankton fecal pellets in the upper water column are often recycled at rates exceeding those measured for microbial degradation, suggesting that zooplankton might be important for flux attenuation of particulate organic carbon in the upper ocean. However, direct evidence for interactions between zooplankton and settling aggregates are still rare. We investigated the importance of zooplankton aggregate feeding for carbon flux attenuation in the upper ocean by determining aggregate ingestion rates and feeding behavior on settling aggregates by the dominant Arctic filter-feeding copepods <i>Calanus</i> spp. and <i>Pseudocalanus</i> spp. Both genera were observed to detect and feed on settling aggregates. Using <i>in situ</i> zooplankton and aggregate abundances in combination with the measured aggregate feeding rates, we calculated that 60–67% of the total carbon flux attenuation at three Arctic locations could be explained by <i>Calanus</i> spp. and <i>Pseudocalanus</i> spp. aggregate feeding alone. When including microbial degradation of the settling aggregates, we could explain up to 77% of the total carbon flux attenuation. Our results suggest that by directly ingesting and fragmenting settling marine snow, mesozooplankton are key organisms for flux attenuation in Arctic waters.en_US
dc.identifier.citationvan der Jagt, Wiedmann, Hildebrandt, Niehoff, Iversen. Aggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive period. Frontiers in Marine Science. 2020;7en_US
dc.identifier.cristinIDFRIDAID 1833191
dc.identifier.doi10.3389/fmars.2020.543124
dc.identifier.issn2296-7745
dc.identifier.urihttps://hdl.handle.net/10037/19705
dc.language.isoengen_US
dc.publisherFrontiers Mediaen_US
dc.relation.journalFrontiers in Marine Science
dc.relation.projectIDinfo:eu-repo/grantAgreement/RCN/?/228107/?/?/?/en_US
dc.rights.accessRightsopenAccessen_US
dc.rights.holderCopyright 2020 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.titleAggregate feeding by the copepods Calanus and Pseudocalanus controls carbon flux attenuation in the Arctic shelf sea during the productive perioden_US
dc.type.versionpublishedVersionen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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