Blar i forfatter "Halvorsen, Elisabeth"

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    • Extramural English, with an emphasis on gaming, and Norwegian National test scores in English, 8th grade 

      Halvorsen, Elisabeth; Haaland, Therese J. (Master thesis; Mastergradsoppgave, 2022-05-14)
      In an increasingly globalized world, digital gaming has emerged, and learning English as a second language has changed towards being a language easily accessible in students out-of-school contexts. This thesis investigates if there are significant interactions between the participants extramural English language activities and the results on the NNT in English, 8th grade. English is a global language ...

    • Food web functions and interactions during spring and summer in the arctic water inflow region: Investigated through inverse modeling 

      Olli, Kalle; Halvorsen, Elisabeth; Vernet, Maria; Lavrentyev, Peter J.; Franzè, Gayantonia; Sanz-Martín, Marina; Paulsen, Maria Lund; Reigstad, Marit (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-28)
      We used inverse modeling to reconstruct major planktonic food web carbon flows in the Atlantic Water inflow, east and north of Svalbard during spring (18–25 May) and summer (9–13 August), 2014. The model was based on three intensively sampled stations during both periods, corresponding to early, peak, and decline phases of a <i>Phaeocystis</i> and diatom dominated bloom (May), and flagellates dominated ...

    • Seasonal variation in transport of zooplankton into the Arctic Basin through the Atlantic gateway, Fram Strait 

      Basedow, Sünnje Linnéa; Sundfjord, Arild; von Appen, Wilken-Jon; Halvorsen, Elisabeth; Kwasniewski, Slawomir; Reigstad, Marit (Journal article; Tidsskriftartikkel; Peer reviewed, 2018-06-04)
      The largest contribution of oceanic heat to the Arctic Ocean is the warm Atlantic Water (AW) inflow through the deep Fram Strait. The AW current also carries Atlantic plankton into the Arctic Basin and this inflow of zooplankton biomass through the Atlantic-Arctic gateway far exceeds the inflow through the shallow Pacific-Arctic gateway. However, because this transport has not yet been adequately ...

    • Surface aggregations of Calanus finmarchicus during the polar night 

      Espinasse, Boris Dristan; Daase, Malin; Halvorsen, Elisabeth; Reigstad, Marit; Berge, Jørgen; Basedow, Sünnje Linnéa (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-16)
      While marine ecosystems in polar areas were thought to be mostly inactive during the polar night, recent observations in the Arctic highlight that dynamic biological interactions occur across all trophic levels. One particularly interesting observation made repeatedly is the occurrence of Calanus finmarchicus, a key species at the base of the food web, in the upper part of the water column in early ...

    • Zooplankton communities associated with new and regenerated primary production in the Atlantic inflow north of Svalbard 

      Svensen, Camilla; Halvorsen, Elisabeth; Vernet, Maria; Franzè, Gayantonia; Dmoch, Katarzyna; Lavrentyev, Peter J.; Kwasniewski, Slawomir (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-06-05)
      The Arctic Ocean is changing rapidly with respect to ice cover extent and volume, growth season duration and biological production. Zooplankton are important components in the arctic marine food web, and tightly coupled to the strong seasonality in primary production. In this study, we investigate zooplankton composition, including microzooplankton, copepod nauplii, as well as small and large copepod ...