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dc.contributor.authorKunisch, Erin
dc.contributor.authorBluhm, Bodil
dc.contributor.authorDaase, Malin
dc.contributor.authorGradinger, Rolf
dc.contributor.authorHop, Haakon
dc.contributor.authorMelnikov, Igor A.
dc.contributor.authorØystein, Varpe
dc.contributor.authorBerge, Jørgen
dc.identifier.citationJournal of Plankton Research. 2020, 42 (1), 73-86.nb_NO
dc.description.abstractApherusa glacialis is a common, sea ice-associated amphipod found throughout the Arctic Ocean and has long been considered permanently associated with the sea ice habitat. However, pelagic occurrences of A. glacialis have also been reported. It was recently suggested that A. glacialis overwinters at depth within the Atlantic-water inflow near Svalbard, to avoid being exported out of the Arctic Ocean through the Fram Strait. This study collated pelagic occurrence records over a 71-year period and found that A. glacialis was consistently found away from its presumed sea ice habitat on a pan-Arctic scale, in different depths and water masses. In the Svalbard region, A. glacialis was found in Atlantic Water both in winter and summer. Additionally, we analyzed A. glacialis size distributions throughout the year, collected mostly from sea ice, in order to elucidate potential life cycle strategies. The majority of young-of-the-year A. glacialis was found in the sea ice habitat during spring, supporting previous findings. Data on size distributions and sex ratios suggest a semelparous lifestyle. A synchronous seasonal vertical migration was not evident, but our data imply a more complex life history than previously assumed. We provide evidence that A. glacialis can no longer be regarded as an autochthonous sympagic species.nb_NO
dc.rightsNavngivelse 4.0 Internasjonal*
dc.titlePelagic occurrences of the ice amphipod Apherusa glacialis throughout the Arcticnb_NO
dc.typeJournal articlenb_NO
dc.typePeer reviewednb_NO
dc.source.journalJournal of Plankton Researchnb_NO
dc.description.localcode© The Author(s) 2020. Published by Oxford University Press. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (, which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.nb_NO
cristin.unitnameInstitutt for biologi

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