• Cascading effects of mass mortality events in Arctic marine communities 

      Langangen, Øystein; Ohlberger, Jan; Stige, Leif C.; Durant, Joel M.; Ravagnan, Elisa; Stenseth, Nils C.; Hjermann, Dag Ø. (Journal article; Peer reviewed, 2017)
      Mass mortality events caused by pulse anthropogenic or environmental perturbations (e.g., extreme weather, toxic spills or epizootics) severely reduce the abundance of a population in a short time. The frequency and impact ...
    • Contaminants in coastal waters of Norway 2018 

      Green, Norman W.; Schøyen, Merete; Hjermann, Dag Ø.; Øxnevad, Sigurd; Ruus, Anders; Beylich, Bjørnar; Lund, Espen; Tveiten, Lise; Jenssen, Marthe T. S.; Håvardstun, Jarle; Ribeiro, Anne Louise; Doyer, Isabel; Rundberget, Jan Thomas; Bæk, Kine (NIVA-rapport;7581, Research report, 2021)
      This programme examines the levels, trends and effects of contaminants in biota along the coast of Norway. The 2018-investigation included analyses of more than 133 different contaminants or biological effect parameters ...
    • The influence of physical factors on kelp and sea urchin distribution in previously and still grazed areas in the NE Atlantic 

      Rinde, Eli; Christie, Hartvig; Fagerli, Camilla W.; Bekkby, Trine; Gundersen, Hege; Norderhaug, Kjell Magnus; Hjermann, Dag Ø. (Journal article; Peer reviewed, 2014)
      The spatial distribution of kelp (Laminaria hyperborea) and sea urchins (Strongylocentrotus droebachiensis) in the NE Atlantic are highly related to physical factors and to temporal changes in temperature. On a large scale, ...
    • Utvikling av metodikk for overvåking av fremmede marine arter 

      Rinde, Eli; Gitmark, Janne K.; Hjermann, Dag Ø.; Fagerli, Camilla W.; Kile, Maia Røst; Christie, Hartvig (NIVA-rapport;7131, Research report, 2017-03)
      På oppdrag fra Miljødirektoratet har vi undersøkt forekomst av marine fremmede arter i Oslofjorden for å utvikle en kostnadseffektiv metode for tidlig varsling av nye arter, og for overvåking av spredning og effekter av ...