Blar i Research Programmes på forfatter "Ottersen, Geir"

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    • Decline and Recovery of Atlantic Cod (Gadus morhua) Stocks throughout the North Atlantic 

      Lilly, George R.; Wieland, Kai; Rothschild, Brian J.; Sundby, Svein; Drinkwater, Ken; Brander, Keith; Ottersen, Geir; Carscadden, James E.; Stenson, Garry B.; Chouinard, Ghislain A.; Swain, Douglas P.; Daan, N.; Enberg, Katja; Hammill, Michael O.; Rosing-Asvid, Aqqalu; Svedäng, Henrik; Vázquez, Antonio (Chapter, 2008)
      Many stocks of Atlantic cod (Gadus morhua) on both sides of the North Atlantic are currently at much reduced levels of biomass, but this situation is not in all instances the result of long, continuous decline. Most Northwest ...

    • Environmental toxicology: Population modeling of cod larvae shows high sensitivity to loss of zooplankton prey 

      Stige, Leif Christian; Ottersen, Geir; Hjermann, Dag Ø.; Dalpadado, Padmini; Jensen, Louise K.; Stenseth, Nils Christian (Journal article; Peer reviewed, 2010-12-30)
      Two factors determine whether pollution is likely to affect a population indirectly through loss of prey: firstly, the sensitivity of the prey to the pollutants, and secondly, the sensitivity of the predator population to ...

    • Spawning stock and recruitment in North Sea cod shaped by food and climate 

      Olsen, Esben Moland; Ottersen, Geir; Llope, Marcos; Chan, Kung-Sik; Beaugrand, Grégory; Stenseth, Nils Christian (Journal article; Peer reviewed, 2010-09-01)
      In order to provide better fisheries management and conservation decisions, there is a need to discern the underlying relationship between the spawning stock and recruitment of marine fishes, a relationship which is ...

    • The Norwegian plan for integrated ecosystem-based management of the marine environment in the Norwegian Sea 

      Ottersen, Geir; Olsen, Erik; van der Meeren, Gro; Dommasnes, Are; Loeng, Harald (Journal article; Peer reviewed, 2010-11-30)
      A White Paper on a new integrated management plan for the Norwegian Sea was launched by the Norwegian government in May 2009. Following international guidelines for ecosystem-based management, the plan provides an overall ...

    • Trophic interactions affecting a key ecosystem component: a multi-stage analysis of the recruitment of the Barents Sea capelin 

      Hjermann, Dag Ø.; Bogstad, Bjarte; Dingsør, Gjert Endre; Gjøsæter, Harald; Ottersen, Geir; Eikeset, Anne Maria; Stenseth, Nils Christian (Journal article; Peer reviewed, 2010-08-10)
      The Barents Sea stock of capelin (Mallotus villosus) has suffered three major collapses (>90% reduction) since 1985 due to recruitment failures. As capelin is a key species in the area, these population collapses have had ...