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dc.contributor.authorSkjoldal, Hein Rune
dc.contributor.authorAarflot, Johanna Myrseth
dc.date.accessioned2024-01-04T11:09:36Z
dc.date.available2024-01-04T11:09:36Z
dc.date.created2023-12-07T15:55:49Z
dc.date.issued2023
dc.identifier.citationJournal of Plankton Research. 2023, 45 (6), 870-884.
dc.identifier.issn0142-7873
dc.identifier.urihttps://hdl.handle.net/11250/3109801
dc.description.abstractZooplankton in the Barents Sea have been monitored annually with a standard procedure with determination of size-fractioned biomass since the mid-1980s. Biomass of copepods and cladocerans was estimated based on measured abundance and individual weights taken from literature. Calanus species were dominant, making up ~85% of the estimated biomass of copepods. The second most important taxon was Oithona spp. (~0.5 g dry weight (dw) m−2, ~10%), followed by Metridia spp. (~0.15 g dw m−2, 2–3%) and Pseudocalanus spp. (0.10–0.15 g dw m−2, 1–5%). Estimated biomass of cladoceran taxa (Evadne and Podon) was low (0.01 g dw m−2). Calanus spp. contributed most of the biomass of the medium size fraction (1–2 mm), whereas small copepod species (Oithona, Pseudocalanus and others) contributed to the small size fraction (<1 mm). Estimated biomass of Calanus spp. and of the sum of small copepod species were both positively correlated with measured total zooplankton biomass (R2 = 0.72 and 0.34, respectively). The biomass ratio of small copepod species to Calanus was similar in Atlantic and Arctic water masses (~0.15–0.2) but tended to increase with decreasing total biomass. This suggests a shift to relatively larger roles of small copepods as Calanus and total biomass decrease.
dc.language.isoeng
dc.titleAbundance and biomass of copepods and cladocerans in Atlantic and Arctic domains of the Barents Sea ecosystem
dc.title.alternativeAbundance and biomass of copepods and cladocerans in Atlantic and Arctic domains of the Barents Sea ecosystem
dc.typePeer reviewed
dc.typeJournal article
dc.description.versionpublishedVersion
dc.source.pagenumber870-884
dc.source.volume45
dc.source.journalJournal of Plankton Research
dc.source.issue6
dc.identifier.doi10.1093/plankt/fbad043
dc.identifier.cristin2210549
dc.relation.projectNorges forskningsråd: 228880
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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