Blar i forfatter "Nilssen, Einar Magnus"

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    • Genetic differentiation between inshore and offshore populations of northern shrimp (Pandalus borealis) 

      Hansen, Agneta; Westgaard, Jon-Ivar; Søvik, Guldborg; Hanebrekke, Tanja Lexau; Nilssen, Einar Magnus; Jorde, Per Erik; Albretsen, Jon; Johansen, Torild (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-09-20)
      Many marine organisms have a permanent presence both inshore and offshore and spawn in multiple areas, yet their status as separate populations or stocks remain unclear. This is the situation for the northern shrimp (Pandalus borealis) around the Arctic Ocean, which in northern Norway represents an important income for a small-scale coastal fishery and a large-vessel offshore fleet. In Norwegian ...

    • Seasonal dynamics of meroplankton in a high-latitude fjord 

      Michelsen, Helena Kling; Svensen, Camilla; Reigstad, Marit; Nilssen, Einar Magnus; Pedersen, Torstein (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-12-09)
      Knowledge on the seasonal timing and composition of pelagic larvae of many benthic invertebrates, referred to as meroplankton, is limited for high-latitude fjords and coastal areas. We investigated the seasonal dynamics of meroplankton in the sub-Arctic Porsangerfjord (70°N), Norway, by examining their seasonal changes in relation to temperature, chlorophyll a and salinity. Samples were collected ...

    • Size at maturity and molting probability across latitude in female Cancer pagurus 

      Bakke, Snorre; Larssen, Wenche Merete Emblem; Woll, Astrid Kari; Søvik, Guldborg; Gundersen, Agnes Christine; Hvingel, Carsten; Nilssen, Einar Magnus (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-04-11)
      Edible crab, <i>Cancer pagurus</i>, is a valuable North Atlantic fishery resource distributed from Morocco to northern Norway, covering a wide range of temperatures and other oceanographic variables. Knowledge on how local environmental conditions affect life history traits like maturity and growth in this species is however lacking, despite its importance in science-based management. Through analyses ...

    • Spatial patterns of spring meroplankton along environmental gradients in a sub-Arctic fjord 

      Michelsen, Helena Kling; Nilssen, Einar Magnus; Pedersen, Torstein; Reigstad, Marit; Svensen, Camilla (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-11-02)
      The spatial patterns in abundance and composition of benthic invertebrate larvae (meroplankton), the correlation between these patterns and environmental variables (temperature, salinity and chl a) and the relative abundance of meroplankton in the mesozooplankton community were investigated in the sub-Arctic Porsangerfjord, Norway (70° N). Zooplankton samples and CTD-profiles were collected at ...

    • Temporal and spatial dynamics of the invasive red king crab and native brachyuran and anomuran larvae in Norwegian waters 

      Michelsen, Helena Kling; Nilssen, Einar Magnus; Pedersen, Torstein; Svensen, Camilla (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-01-16)
      This study investigates the temporal and spatial patterns of larval stages of the invasive red king crab <i>Paralithodes camtschaticus</i> (RKC) and co-existing native brachyurans and anomurans in a Norwegian fjord. It is one of few field studies describing the larval stage of native and invasive brachyurans and anomurans in the southern Barents Sea. Larvae were collected at 6 to 18 stations at ...