• Assessment of risk and risk-reducing measures related to the introduction and dispersal of the invasive alien carpet tunicate Didemnum vexillum in Norway 

      Järnegren, Johanna; Gulliksen, Bjørn; Husa, Vivian; Malmstrøm, Martin; Oug, Eivind; Berg, Paul Ragnar; Bryn, Anders; Geange, Sonya Rita; Hindar, Kjetil; Hole, Lars Robert; Kausrud, Kyrre Linné; Kirkendall, Lawrence Richard; Nielsen, Anders; Sandercock, Brett Kevin; Thorstad, Eva Bonsak; Velle, Gaute (Peer reviewed; Journal article, 2023)
      Didemnum vexillum is colonial sea squirt, a marine species which originates from the northwest Pacific; it was first recorded in Norway in November 2020. Didemnum vexillum is an alien species, meaning that it is a species ...
    • Predicting density-dependent somatic growth in Norwegian spring-spawning herring 

      Stenevik, Erling Kåre; Hølleland, Sondre Nedreås; Enberg, Katja; Høines, Åge Sigurd; Salthaug, Are; Slotte, Aril; Vatnehol, Sindre; Aanes, Sondre (Peer reviewed; Journal article, 2022)
      Density-dependent growth, which might influence the effects of fisheries on a population, is often ignored when management strategies are evaluated, mainly due to a lack of appropriate models readily available to be ...
    • Utredning av behovet for å redusere tilførslene av nitrogen til Ytre Oslofjord 

      Staalstrøm, Andre; Walday, Mats Gunnar; Vogelsang, Christian; Frigstad, Helene; Borgersen, Gunhild; Albretsen, Jon; Naustvoll, Lars Johan (NIVA-rapport, Research report, 2021)
      I store deler av Oslofjorden er det høye konsentrasjoner av nitrogen i vannmassene. I Frierfjorden, Tønsberg, Drammensfjorden, Mossesundet, Hvaler og Iddefjorden klassifiseres tilstanden til «moderat» eller dårlig for ...