Blar i forfatter "Coguiec, Estelle"

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    • Photoperiodism and overwintering in boreal and sub-Arctic Calanus finmarchicus populations 

      Coguiec, Estelle; Last, Kim S.; Cohen, Jonathan H.; Hobbs, Laura; Choquet, Marvin; Ershova, Elizaveta; Berge, Jørgen; Daase, Malin (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-08)
      The copepod Calanus finmarchicus, a key species in the North Atlantic, generally spends the non-productive season by descending into deep waters and entering diapause, a physiological state characterized by reduced metabolism and arrested development. In the open ocean, overwintering depths are below 600 m, where temperature and light conditions are favourable to initiate diapause. However, C. ...

    • Seasonal Variability in the Zooplankton Community Structure in a Sub-Arctic Fjord as Revealed by Morphological and Molecular Approaches 

      Coguiec, Estelle; Ershova, Elizaveta; Daase, Malin; Vonnahme, Tobias R.; Wangensteen, Owen S.; Gradinger, Rolf; Præbel, Kim; Berge, Jørgen (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-08-04)
      Phyto- and zooplankton in Arctic and sub-Arctic seas show very strong seasonal changes in diversity and biomass. Here we document the seasonal variability in the mesozooplankton community structure in a sub-Arctic fjord in Northern Norway based on monthly sampling between November 2018 and February 2020. We combined traditional morphological zooplankton identification with DNA metabarcoding of a 313 ...

    • Zooplankton seasonality at high latitudes: From community to behaviour 

      Coguiec, Estelle (Doctoral thesis; Doktorgradsavhandling, 2023-05-16)
      This thesis describes the seasonality of the mesozooplankton community in Ramfjord, a shallow high-latitude fjord, in terms of diversity and behavior, using a combination of new and traditional methods. The approach aimed to gain insight into how environmental drivers such as photoperiod and food availability shape seasonal changes in mesozooplankton community structure and <i>Calanus</i> spp. ...