Blar i forfatter "Eiane, Ketil"

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    • Effects of mortality changes on biomass and production in Calanus spp. populations 

      Skardhamar, Jofrid; Reigstad, Marit; Carroll, Jolynn; Eiane, Ketil; Wexels Riser, Christian; Slagstad, Dag (Journal article; Tidsskriftartikkel; Peer reviewed, 2011-04-28)
      Calanus species are the main link between primary producers and higher trophic-level organisms in the Barents Sea. The natural mortality rate is an essential parameter for determining the standing stock of Calanus, but it is also one of the most uncertain parameters in present knowledge. The level of human activity, and the associated risk of pollution, is increasing in the Barents Sea, and knowledge ...

    • Genetics redraws pelagic biogeography of Calanus 

      Choquet, Marvin Raoul Charles Roger Ren; Haltebakk, Maja; Dhanasiri, Anusha Krishanthi Shyama; Kosobokova, Ksenia N.; Smolina, Irina Vladimirovna; Søreide, Janne; Svensen, Camilla; Melle, Webjørn Raunsgård; Kwasniewski, Slawomir; Eiane, Ketil; Daase, Malin; Tverberg, Vigdis; Skreslet, Stig; Bucklin, Ann; Hoarau, Galice Guillaume (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-12-20)
      Planktonic copepods of the genus Calanus play a central role in North Atlantic/Arctic marine food webs. Here, using molecular markers, we redrew the distributional ranges of Calanus species inhabiting the North Atlantic and Arctic Oceans and revealed much wider and more broadly overlapping distributions than previously described. The Arctic shelf species, C. glacialis, dominated the zooplankton ...

    • Seasonal vertical strategies in a high-Arctic coastal zooplankton community 

      Bandara, Kanchana; Varpe, Øystein; Søreide, Janne; Wallenschus, Jago; Berge, Jørgen; Eiane, Ketil (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-08-18)
      We studied the larger (>1000 µm) size fraction of zooplankton in an Arctic coastal water community in Billefjorden, Svalbard (78°40’ N), Norway, in order to describe seasonal vertical distributions of the dominant taxa in relation to environmental variability. Calanus spp. numerically dominated the herbivores; Aglantha digitale, Mertensia ovum, Beroë cucumis, and Parasagitta elegans were the ...

    • Two hundred years of zooplankton vertical migration research 

      Bandara, Kanchana; Varpe, Øystein; Wijewardene, Lishani; Tverberg, Vigdis; Eiane, Ketil (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-04)
      Vertical migration is a geographically and taxonomically widespread behaviour among zooplankton that spans across diel and seasonal timescales. The shorter-term diel vertical migration (DVM) has a periodicity of up to 1 day and was first described by the French naturalist Georges Cuvier in 1817. In 1888, the German marine biologist Carl Chun described the longer-term seasonal vertical migration ...

    • Variability in Calanus spp. abundance on fine- to mesoscales in an Arctic fjord: implications for little auk feeding 

      Vogedes, Daniel Ludwig; Eiane, Ketil; Båtnes, Anna Solvang; Berge, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2014)