Blar i NINA Brage på forfatter "Davidsen, Jan Grimsrud"

Viser treff 1-9 av 9

    • Environmental influences on life history strategies in partially anadromous brown trout (Salmo trutta, Salmonidae) 

      Nevoux, Marie; Finstad, Bengt; Davidsen, Jan Grimsrud; Finlay, Ross; Josset, Quentin; Poole, Rusell; Höjesjö, Johan; Aarestrup, Kim; Persson, Lo; Tolvanen, Oula; Jonsson, Bror (Journal article; Peer reviewed, 2019)
      This paper reviews the life history of brown trout and factors influencing decisions to migrate. Decisions that maximize fitness appear dependent on size at age. In partly anadromous populations, individuals that attain ...

    • Fiskebiologiske undersøkelser i Øvre Namsen. Årsrapport 2015 og planer for videreføring av undersøkelsene 

      Sundt-Hansen, Line Elisabeth; Berg, Ole Kristian; Davidsen, Jan Grimsrud; Hellen, Bjart Are; Bremset, Gunnbjørn; Eikaas, Linda; Kambestad, Marius; Karlsson, Sten; Rønning, Lars; Sægrov, Harald; Heggberget, Tor G. (NINA Kortrapport;1, Research report, 2016-03-14)
      Sundt-Hansen, L.E., Berg, O.K., Davidsen, J.G., Hellen, B.A., Bremset, G., Eikaas, L., Kambestad, M., Karlsson, S., Rønning, L., Sægrov, H. & Heggberget, T.G. 2016. Fiskebiologiske undersøkelser i Øvre Namsen. Årsrapport ...

    • Fiskebiologiske undersøkelser i Øvre Namsen. Årsrapport for 2016 

      Sundt-Hansen, Line Elisabeth; Berg, Ole Kristian; Bremset, Gunnbjørn; Davidsen, Jan Grimsrud; Heggberget, Tor G.; Hellen, Bjart Are; Kambestad, Marius; Museth, Jon; Rønning, Lars; Sægrov, Harald (NINA Rapport;1298, Research report, 2017)
      Sundt-Hansen, L. E., Berg, O.K., Bremset, G., Davidsen, J.G., Heggberget, T.G., Hellen, B.A., Kambestad, M., Museth, J., Rønning, L. & Sægrov, H. 2017. Fiskebiologiske undersøkelser i Øvre Namsen. Årsrapport for 2016. – ...

    • Fiskebiologiske undersøkelser i Øvre Namsen. Årsrapport for 2017 

      Sundt-Hansen, Line Elisabeth; Berg, Ole Kristian; Bremset, Gunnbjørn; Davidsen, Jan Grimsrud; Heggberget, Tor G.; Hellen, Bjart Are; Kambestad, Marius; Karlsson, Sten; Museth, Jon; Rønning, Lars; Sægrov, Harald (NINA Rapport;1500, Research report, 2018)
      Sundt-Hansen, L.E., Berg, O.K., Bremset, G., Davidsen, J.G., Heggberget, T.G., Hellen, B.A., Kambestad, M., Karlsson, S., Museth, J., Rønning L. & Sægrov, H. 2018. Fiskebiologiske undersøkelser i Øvre Namsen. Årsrapport ...

    • Fiskebiologiske undersøkelser i Øvre Namsen. Samlerapport fra undersøkelser i perioden 2014-2019 

      Sundt-Hansen, Line Elisabeth; Berg, Ole Kristian; Davidsen, Jan Grimsrud; Eikås, Linda; Heggberget, Tor G.; Hellen, Bjart Are; Kambestad, Marius; Karlsson, Sten; Rønning, Lars; Sægrov, Harald; Ulvan, Eva Marita (NINA Rapport;1551, Research report, 2020)
      Sundt-Hansen, L. E., Berg, O.K., Davidsen, J.G., Eikås L., Heggberget, T.G., Hellen, B.A., Kambestad, M., Karlsson, J., Rønning, L., Sægrov, H. & Ulvan, E.M. 2020. Fiskebiologiske undersøkelser i Øvre Namsen. Samlerapport ...

    • Metodeutvikling: overvåking av fisk i store innsjøer (FIST) i 2016 

      Gjelland, Karl Øystein; Sandlund, Odd Terje; Andersen, Oddgeir; Bremset, Gunnbjørn; Bækkelie, Knut Andreas E.; Davidsen, Jan Grimsrud; Eloranta, Antti; Pettersen, Oskar; Rønning, Lars; Rustbakken, Atle; Saksgård, Laila; Saksgård, Randi; Sjursen, Aslak Darre (NINA Rapport;1573, Research report, 2018)
      Gjelland, K.Ø., Sandlund, O.T., Andersen, O., Bremset, G., Bækkelie, K.A.E., Davidsen, J.G., Eloranta, A., Pettersen, O., Rønning, L., Rustadbakken, A., Saksgård, L., Saksgård, R. & Sjursen, A.D. 2017. Metodeutvikling: ...

    • One Hundred Pressing Questions on the Future of Global Fish Migration Science, Conservation, and Policy 

      Lennox, Robert J.; Paukert, Craig P.; Aarestrup, Kim; Auger-Méthé, Marie; Baumgartner, Lee; Birnie-Gauvin, Kim; Bøe, Kristin; Brink, Kerry; Brownscombe, Jacob W.; Chen, Yushun; Davidsen, Jan Grimsrud; Eliason, Erika J.; Filous, Alexander; Gillanders, Bronwyn M.; Helland, Ingeborg Palm; Horodysky, Andrij Z.; Januchowski-Hartley, Stephanie R.; Lowerre-Barbieri, Susan K.; Lucas, Martyn C.; Martins, Eduardo G.; Murchie, Karen J.; Pompeu, Paulo S.; Power, Michael; Raghavan, Rajeev; Rahel, Frank J.; Secor, David; Thiem, Jason D.; Thorstad, Eva Bonsak; Ueda, Hiroshi; Whoriskey, Frederick G.; Cooke, Steven J. (Journal article; Peer reviewed, 2019)
      Migration is a widespread but highly diverse component of many animal life histories. Fish migrate throughout the world’s oceans, within lakes and rivers, and between the two realms, transporting matter, energy, and other ...

    • Redefining the oceanic distribution of Atlantic salmon 

      Rikardsen, Audun H.; Righton, David; Strøm, John Fredrik; Thorstad, Eva Bonsak; Gargan, Patrick G.; Sheehan, Timothy F.; Økland, Finn; Chittenden, Cedar; Hedger, Richard David; Næsje, Tor; Renkawitz, Mark; Sturlaugsson, Johannes; Caballero, Pablo; Baktoft, Henrik; Davidsen, Jan Grimsrud; Halttunen, Elina; Wright, Serena; Finstad, Bengt; Aarestrup, Kim (Peer reviewed; Journal article, 2021)
      Determining the mechanisms driving range-wide reductions in Atlantic salmon marine survival is hindered by an insufcient understanding of their oceanic ecology and distribution. We attached 204 pop-up satellite archival ...

    • Trophic niche similarity among sea trout Salmo trutta in Central Norway investigated using different time-integrated trophic tracers 

      Davidsen, Jan Grimsrud; Knudsen, Rune; Power, Michael; Sjursen, Aslak Darre; Rønning, Lars; Hårsaker, Karstein; Næsje, Tor; Arnekleiv, Jo Vegar (Journal article; Peer reviewed, 2017)
      From 2011 to 2013, anadromous brown trout Salmo trutta (213−730 mm, total body length, LT) were collected during or shortly after their marine feeding migration at 7 different localities in central Norway. The mean volume ...