• durant_2020_-haddock_fig1 Cod-Haddock 2-1 in Barents Sea

    In the Boreal-Arctic seas, the two most abundant gadoid fish are the Atlantic cod ( Gadus morhua) and the haddock ( Melanogrammus aeglefinus). Both tend to respond to climate warming by an abundance increase and a change of distribution. Are these changes affecting how they are interacting? Statistical analysis using a state-space threshold model of acoustic and trawl survey data on cod and haddock abundance indicates that the interaction is changing with sea temperature: the cod negatively affecting the haddock when sea temperature is over 4 °C.

  • dupont-2020-polar_cod Global warming makes polar cod grow larger in the Arctic Barents Sea

    We studied the effect of changes in sea ice cover, sea temperature, and biomass of prey or predator on the length of polar cod. Our results show a significant negative effect of sea ice cover on length of all age groups of polar cod: Polar cod grow faster when there is less sea ice.

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Upcoming public events

Sep. 2, 2021 Add to calendar

Open lectures by C. Jessica E. Metcalf and John-Arne Røttingen. The topics are the ecology and evolution of SARS-CoV-2, and translating science to policy – the case of pandemic preparedness and response.

Feb. 11, 2022 Add to calendar

Open lectures. Darwin Day is an international recognition of science and humanity, held in memory of Charles Darwin (1809-1882).