• Genome architecture enables local adaptation of Atlantic cod despite high connectivity 

      Barth, Julia Maria Isis; Berg, Paul Ragnar; Jonsson, Per R; Bonanomi, Sara; Corell, Hanna; Hemmer-Hansen, Jakob; Jakobsen, Kjetill Sigurd; Johannesson, Kerstin; Jorde, Per Erik; Knutsen, Halvor; Moksnes, Per-Olav; Star, Bastiaan; Stenseth, Nils Christian; Svedang, Henrik; Jentoft, Sissel; Andre, Carl (Journal article; Peer reviewed, 2017)
      Adaptation to local conditions is a fundamental process in evolution; however, mechanisms maintaining local adaptation despite high gene flow are still poorly understood. Marine ecosystems provide a wide array of diverse ...
    • Genome architecture enables local adaptation of Atlantic cod despite high connectivity 

      Barth, Julia Maria Isis; Berg, Paul Ragnar; Jonsson, Per R; Bonanomi, Sara; Corell, Hanna; Hemmer-Hansen, Jakob; Jakobsen, Kjetill Sigurd; Johannesson, Kerstin; Jorde, Per Erik; Knutsen, Halvor; Moksnes, Per-Olav; Star, Bastiaan; Stenseth, Nils Christian; Svedang, Henrik; Jentoft, Sissel; Andre, Carl (Journal article; Peer reviewed, 2017)
      Adaptation to local conditions is a fundamental process in evolution; however, mechanisms maintaining local adaptation despite high gene flow are still poorly understood. Marine ecosystems provide a wide array of diverse ...
    • Genomic stability through time despite decades of exploitation in cod on both sides of the Atlantic 

      Pinsky, Malin L; Eikeset, Anne Maria; Helmerson, Cecilia; Bradbury, Ian R.; Bentzen, Paul; Morris, Corey; Gondek, Agata; Baalsrud, Helle Tessand; Brieuc, Marine Servane Ono; Kjesbu, Olav Sigurd; Godiksen, Jane Aanestad; Barth, Julia Maria Isis; Matschiner, Michael; Stenseth, Nils Christian; Jakobsen, Kjetill Sigurd; Jentoft, Sissel; Star, Bastiaan (Peer reviewed; Journal article, 2021)
      The mode and extent of rapid evolution and genomic change in response to human harvesting are key conservation issues. Although experiments and models have shown a high potential for both genetic and phenotypic change in ...
    • Indirect climatic forcing of the Barents Sea capelin: a cohort effect 

      Hjermann, Dag Ø.; Stenseth, Nils Christian; Ottersen, Geir (Journal article; Peer reviewed, 2004-06-08)
      Planktivorous capelin is a key species in the Barents Sea, being of great importance in the exploitation of plankton production in this subarctic region. However, in years with a successful reproduction of the Norwegian ...
    • Inferring genetic connectivity in real populations, exemplified by coastal and oceanic atlantic cod 

      Spies, Ingrid; Hauser, Lorenz; Jorde, Per Erik; Knutsen, Halvor; Punt, André E.; Rogers, Lauren; Stenseth, Nils Christian (Journal article; Peer reviewed, 2018)
      Genetic data are commonly used to estimate connectivity between putative populations, but translating them to demographic dispersal rates is complicated. Theoretical equations that infer a migration rate based on the genetic ...
    • Inferring genetic connectivity in real populations, exemplified by coastal and oceanic Atlantic cod 

      Spies, Ingrid; Hauser, Lorenz; Jorde, Per Erik; Knutsen, Halvor; Punt, André E.; Rogers, Lauren; Stenseth, Nils Christian (Journal article; Peer reviewed, 2018)
      Genetic data are commonly used to estimate connectivity between putative populations, but translating them to demographic dispersal rates is complicated. Theoretical equations that infer a migration rate based on the genetic ...
    • Inter-regional comparison of climate effects on marine fish populations facilitated through classification of mechanisms 

      Ottersen, Geir; Stenseth, Nils Christian (ICES CM documents;2007/D:17, Working paper, 2007)
      Variations in climate strongly affect the structure and function of marine ecosystems, but a number of different mechanisms are at play and their relative importance varies between regions and with time. There are obvious ...
    • Interbreeding between local and translocated populations of a cleaner fish in an experimental mesocosm predicts risk of disrupted local adaptation 

      Blanco Gonzalez, Enrique; Espeland, Sigurd Heiberg; Jentoft, Sissel; Hansen, Michael Møller; Robalo, Joana I.; Stenseth, Nils Christian; Jorde, Per Erik (Journal article; Peer reviewed, 2019)
      Translocation of organisms within or outside its native range carries the risk of modifying the community of the recipient ecosystems and induces gene flow between locally adapted populations or closely related species. ...
    • Kysttorsk: Genetiske analyser påviser lokale bestander 

      Knutsen, Halvor; Jorde, Per Erik; Stenseth, Nils Christian (Havforskningsnytt, Working paper, 2002)
    • Landscape dynamics and predator-prey interactions in marine environments 

      Ciannelli, Lorenzo; Bailey, Kevin; Frank, Kenneth T.; Hjermann, Dag Ø.; Ottersen, Geir; Stenseth, Nils Christian (ICES CM documents, Working paper, 2004)
      In several sub-arctic marine ecosystems of the North Atlantic capelin are the primary prey item for cod, and the trophic interaction between capelin and cod is a central energetic pathway. However, in the North Pacific ...
    • Life history of fjord cod from the Skagerrak in the mid-2000s compared to 1905 

      Lund, Marthe Bråthen; Olsen, Esben Moland; Espeland, Sigurd Heiberg; Stenseth, Nils Christian (Journal article; Peer reviewed, 2011-03-01)
      Life history changes serve as stress indicators in harvested populations. Data from recent decades show that many species of marine fish are now maturing at younger ages and smaller sizes, associated with a general increase ...
    • Long-term fluctuations in cod and pollack along the Norwegian Skagerrak coast 

      Fromentin, Jean-Marc; Stenseth, Nils Christian; Gjøsæter, Jakob; Johannessen, Tore; Planque, Benjamin (Journal article; Peer reviewed, 1998-02-12)
      We tested whether the long-term fluctuations in abundance of 0-group cod Gadus morhua and pollack Pollachius pollachius sampled from 1919 to 1994 at 38 stations along the Norwegian Skagerrak coast might be related to the ...
    • Long-term movement patterns of coastal cod (Gadus morhua) 

      Espeland, Sigurd Heiberg; Gjøsæter, Jakob; Stenseth, Nils Christian (ICES CM Documents;2001/L:18, Working paper, 2001)
      Movement patterns were studied by means of hydroacustic telemetry along the Norwegian Skagerrak coast. Ultrasonic transmitters was surgically implanted in 10 coastal cod, and released in the same area as they where caught. ...
    • A long-term perspective on the Chrysochromulina bloom on the Norwegian Skagerrak coast 1988: a catastrophe or an innocent incident? 

      Gjøsæter, Jakob; Lekve, Kyrre; Stenseth, Nils Christian; Leinaas, Hans Petter; Christie, Hartvig; Dahl, Einar; Danielssen, Didrik S.; Edvardsen, Bente; Olsgard, Frode; Paasche, Eystein (Journal article; Peer reviewed, 2000-11-22)
      The long-term effects of the 1988 algal bloom (Chrysochromulina polylepis Manton et Parke) along the Norwegian Skagerrak coast are evaluated and discussed on the basis of several monitoring programmes. Effects on individual ...
    • Maternal influences on offspring size variation and viability in wild European lobster Homarus gammarus 

      Moland, Even; Olsen, Esben Moland; Stenseth, Nils Christian (Working paper, 2010-02-11)
      In many marine species, large females tend to produce more robust offspring than small females. However, knowledge on maternal influences in decapod crustaceans is limited. This is unfortunate since many decapod populations ...
    • New perspectives on fish movement: kernel and GAM smoothers applied to a century of tagging data on coastal Atlantic cod 

      Espeland, Sigurd Heiberg; Olsen, Esben Moland; Knutsen, Halvor; Gjøsæter, Jakob; Danielssen, Didrik S.; Stenseth, Nils Christian (Journal article; Peer reviewed, 2008-12-09)
      Tagging–recovery studies have been used successfully on many occasions, and the data analysed in a variety of ways with respect to fish movement. Here we provide a synoptic account of useful statistical techniques for ...
    • Non-linear dynamics in marine-phytoplankton population systems 

      Belgrano, Andrea; Lima, Mauricio; Stenseth, Nils Christian (Journal article; Peer reviewed, 2004-06-08)
      Although non-linear density-dependence has been widely emphasized in population dynamics studies, the existence of non-linear exogenous forces have been less explored. In articular, we propose that the formulation of ...
    • Non‐linearity in interspecific interactions in response to climate change: cod and haddock as an example 

      Durant, Joel Marcel; Ono, Kotaro; Stenseth, Nils Christian; Langangen, Øystein (Peer reviewed; Journal article, 2020)
      Climate change has profound ecological effects, yet our understanding of how trophic interactions among species are affected by climate change is still patchy. The sympatric Atlantic haddock and cod are co‐occurring across ...
    • Population dynamics of cod Gadus morhua in the North Sea region: biological density-dependent and climatic density-independent effects 

      Chen, Qingxian; Chan, Kung-Sik; Lekve, Kyrre; Torstensen, Else; Gjøsæter, Jakob; Ottersen, Geir; Stenseth, Nils Christian (Journal article; Peer reviewed, 2005-11-04)
      Through the statistical modeling of monitoring data, we assess the ecological interlinkages between cod Gadus morhua L. in the North Sea, Skagerrak and Kattegat—regions which typically have been considered separate management ...
    • Possible adverse impact of contaminants on Atlantic cod population dynamics in coastal ecosystems 

      Ono, Kotaro; Knutsen, Halvor; Olsen, Esben Moland; Ruus, Anders; Hjermann, Dag Øystein; Stenseth, Nils Christian (Journal article; Peer reviewed, 2019)
      While many in-laboratory ecotoxicological studies have shown the adverse impact of pollutants to the fitness of an individual, direct evidence from the field on the population dynamics of wildlife animals has been lacking. ...