Browsing Brage IMR by Author "Utne, Kjell Rong"

Now showing items 1-20 of 22

    • A Review of Pink Salmon in the Pacific, Arctic, and Atlantic Oceans 

      April, Julien; Bean, Colin W.; Berntsen, Johan Henrik Hårdensson; Dunmall, Karen M.; Ensing, Dennis; Erkinaro, Jaakko; Farley, Ed; Fossøy, Frode; Gilk-Baumer, Sara; Habicht, Chris; Howard, Katie; Irvine, James R.; Karlsson, Sten; Kendall, Neala W.; Kitching, Tor; Langan, Joseph A.; Latham, Steve; Lee, Elizabeth; Meerburg, David; Millane, Michael; Munro, Andrew; Orlov, Polina; Oxman, Dion; Radchenko, Vladimir I.; Schubert, Aidan; Thorstad, Eva Bonsak; Utne, Kjell Rong; Walker, Alan; Wells, Alan (North Pacific Anadromous Fish Commission. Technical Report, Research report, 2023)
      The Northern Hemisphere Pink Salmon Expert Group Meeting was held on October 2–3, 2022 in Vancouver, Canada, immediately preceding the International Year of the Salmon (IYS) Synthesis Symposium. The rapid expansion of pink ...

    • Annual report on health monitoring of wild anadromous salmonids in Norway 2019: Screening of Atlantic salmon (Salmo salar) smolts for viral infections 

      Madhun, Abdullah Sami; Wennevik, Vidar; Utne, Kjell Rong; Karlsen, Ørjan; Kvamme, Bjørn Olav; Karlsbakk, Egil (Rapport fra havforskningen;2020 - 16, Research report, 2020)

    • Bioenergetics modeling of the annual consumption of zooplankton by pelagic fish feeding in the Northeast Atlantic 

      Bachiller, Eneko; Utne, Kjell Rong; Jansen, Teunis; Huse, Geir (Journal article; Peer reviewed, 2018)
      The present study uses bioenergetics modeling to estimate the annual consumption of the main zooplankton groups by some of the most commercially important planktivorous fish stocks in the Northeast Atlantic, namely Norwegian ...

    • Diet analysis of Atlantic salmon (Salmo salar) post-smolts after the ecological regime shift in the Northeast Atlantic 

      Hellenbrecht, Lea Marie; Utne, Kjell Rong; Karlsen, Ørjan; Glover, Kevin Alan; Wennevik, Vidar (Peer reviewed; Journal article, 2023)
      Transition from freshwater to saltwater presents multiple challenges for anadromous Atlantic salmon, and survival during this critical life-stage is thought to influence adult population abundance. Despite this, the role ...

    • The diet of juvenile Atlantic mackerel (Scomber scombrus) feeding in new northern nursery areas along the Norwegian coast 

      Bjørdal, Vilde R.; Mørk, Herdis Langøy; Utne, Kjell Rong; Fernø, Anders; Nøttestad, Leif (Peer reviewed; Journal article, 2022)
      The North-east Atlantic mackerel stock size increased substantially from 2006–2014 coinciding with high recruitment. This resulted in a pronounced northerly geographic expansion of mackerel, followed by an influx of juvenile ...

    • The early marine distribution of Atlantic salmon in the North-east Atlantic: A genetically informed stock-specific synthesis 

      Gilbey, John; Utne, Kjell Rong; Wennevik, Vidar; Beck, Alexander Christian; Kausrud, Kyrre Linné; Hindar, Kjetil; de Leaniz, Carlos Garcia; Cherbonnel, Corrine; Coughlan, Jamie; Cross, Tom F.; Dillane, Eileen; Ensing, Dennis; García-Vázquez, Eva; Hole, Lars Robert; Holm, Marianne; Holst, Jens Christian; Jacobsen, Jan Arge; Jensen, Arne Johan; Karlsson, Sten; Ó Maoiléidigh, Niall; Mork, Kjell Arne; Nielsen, Einar Eg; Nøttestad, Leif; Primmer, Craig R.; Prodöhl, Paulo; Prusov, Sergey; Stevens, Jamie R.; Thomas, Katie; Whelan, Ken; McGinnity, Philip; Verspoor, Eric (Peer reviewed; Journal article, 2021)
      The survival of Atlantic salmon (Salmo salar), an increasingly rare anadromous species, has declined dramatically during its marine phase, with disproportionate impacts on the poorly understood early post-smolt period. ...

    • Ecological regime shift in the Northeast Atlantic Ocean revealed from the unprecedented reduction in marine growth of Atlantic salmon 

      Vollset, Knut; Urdal, Kurt; Utne, Kjell Rong; Thorstad, Eva Bonsak; Sægrov, Harald; Raunsgard, Astrid; Skagseth, Øystein; Lennox, Robert; Østborg, Gunnel Marie; Ugedal, Ola; Jensen, Arne Johan; Bolstad, Geir Hysing; Fiske, Peder (Peer reviewed; Journal article, 2022)
      Ecological regime shifts are abrupt changes in the structure and function of ecosystems that persist over time, but evidence of contemporary regime shifts are rare. Historical scale data from 52,384 individual wild Atlantic ...

    • Feeding interactions between Atlantic salmon (Salmo salar) postsmolts and other planktivorous fish in the Northeast Atlantic 

      Utne, Kjell Rong; Thomas, Katie; Jacobsen, Jan Arge; Fall, Johanna Jennifer Elisabeth; Maoiléidigh, Niall Ó.; Broms, Cecilie Thorsen; Melle, Webjørn Raunsgård (Peer reviewed; Journal article, 2020)

    • Geographic distribution, abundance, diet, and body size of invasive pink salmon (Oncorhynchus gorbuscha) in the Norwegian and Barents Seas, and in Norwegian rivers 

      Diaz Pauli, Beatriz; Berntsen, Johan Henrik Hårdensson; Thorstad, Eva Bonsak; Homrum, Eydna í; Lusseau, Susan Mærsk; Wennevik, Vidar; Utne, Kjell Rong (Peer reviewed; Journal article, 2022)
      We report for the first time the geographic distribution, abundance, diet, and body size of invasive pink salmon (Oncorhynchus gorbuscha) in the Norwegian and Barents Seas and Norwegian coast and rivers. We found that pink ...

    • Havbruk til havs – Fysiske miljøbetingelser og økosystempåvirkning 

      Albretsen, Jon; Beck, Alexander Christian; Biuw, Martin; Huserbråten, Mats Brockstedt Olsen; Kutti, Tina; Kvamme, Bjørn Olav; Skagseth, Øystein; Utne, Kjell Rong; Vikebø, Frode Bendiksen; Wennevik, Vidar (Rapport fra havforskningen;2019 - 41, Research report, 2019)
      Nærings- og fiskeridepartementet ber om kunnskapsinnspill for å vurdere egnede lokaliteter for havbruk til havs. Fiskeridirektoratet har i den sammenheng bedt Havforskningsinstituttet om å bidra på fire områder; i) Krav ...

    • Impacts of a Changing Ecosystem on the Feeding and Feeding Conditions for Atlantic Salmon During the First Months at Sea 

      Utne, Kjell Rong; Skagseth, Øystein; Wennevik, Vidar; Broms, Cecilie; Melle, Webjørn Raunsgård; Thorstad, Eva Bonsak (Peer reviewed; Journal article, 2022)
      During the last decades, many wild Atlantic salmon populations have declined dramatically. One hypothesis for an observed reduction in salmon marine growth and survival is reduced abundance of prey. However, the effect of ...

    • Novel large-scale mapping highlights poor state of sea trout populations 

      Fiske, Peder; Forseth, Torbjørn; Thorstad, Eva Bonsak; Bakkestuen, Vegar; Einum, Sigurd; Falkegård, Morten; Garmo, Øyvind A.; Garseth, Åse Helen; Skoglund, Helge; Solberg, Monica Favnebøe; Utne, Kjell Rong; Vollset, Knut; Vøllestad, Leif Asbjørn; Wennevik, Vidar (Peer reviewed; Journal article, 2024)
      1. The state of sea trout in 1251 Norwegian watercourses was assessed based on a scoring system for human pressures, abundance data, and local knowledge. 2. Over 16,000 km of rivers and lakes were available to sea trout ...

    • Patterns, efficiency and ecosystem effects when fishing Calanus finmarchicus in the Norwegian Sea—using an individual-based model 

      Hansen, Cecilie; Skogen, Morten D.; Utne, Kjell Rong; Broms, Cecilie; Strand, Espen; Hjøllo, Solfrid Sætre (Peer reviewed; Journal article, 2021)
      Due to the important role of Calanus finmarchicus as key prey for the abundant pelagic fish stocks (Northeast Atlantic mackerel, Norwegian spring spawning herring, blue whiting) in the Norwegian Sea, an increase in the ...

    • PELFOSS (PELagic Fish Observation System Simulator) 

      Skogen, Morten D.; Handegard, Nils Olav; Holmin, Arne Johannes; Hjøllo, Solfrid Sætre; Mousing, Erik Askov; Utne, Kjell Rong; Vabø, Rune (Rapport fra havforskningen;30-2018, Research report, 2018)
      PELFOSS har utviklet en observasjonssystem-simulator for pelagisk fisk i Norskehavet. Simulatoren er en dataløype der romlig fordeling av fiskebestander fra en økosystemmodell er benyttet til å simulere ulike tokt. Disse ...

    • Poor feeding opportunities and reduced condition factor for salmon post-smolts in the Northeast Atlantic Ocean 

      Utne, Kjell Rong; Pauli, Beatriz Diaz; Haugland, Monika; Jacobsen, Jan Arge; Maoileidigh, Niall O´; Melle, Webjørn Raunsgård; Broms, Cecilie; Nøttestad, Leif; Holm, Marianne; Thomas, Katie; Wennevik, Vidar (Peer reviewed; Journal article, 2021)
      During the last few decades, many wild Atlantic salmon populations have declined dramatically. One possible contributing factor for the decline is reduced prey availability at sea. Here, we examine post-smolt diet and ...

    • Predation of Atlantic salmon across ontogenetic stages and impacts on populations 

      Falkegård, Morten; Lennox, Robert; Thorstad, Eva Bonsak; Einum, Sigurd; Fiske, Peder; Garmo, Øyvind Aaberg; Garseth, Åse Helen; Skoglund, Helge; Solberg, Monica Favnebøe; Utne, Kjell Rong; Vollset, Knut; Vøllestad, Leif Asbjørn; Wennevik, Vidar; Forseth, Torbjørn (Peer reviewed; Journal article, 2023)
      Managers and stakeholders increasingly ask whether predation is a driving force behind the poor status of many species, and whether predator control is likely to be a successful management action to intervene. We review ...

    • Predation of Atlantic salmon across ontogenetic stages and impacts on populations 

      Falkegård, Morten; Lennox, Robert; Thorstad, Eva Bonsak; Einum, Sigurd; Fiske, Peder; Garmo, Øyvind Aaberg; Garseth, Åse Helen; Skoglund, Helge; Solberg, Monica Favnebøe; Utne, Kjell Rong; Vollset, Knut; Vøllestad, Leif Asbjørn; Wennevik, Vidar; Forseth, Torbjørn (Peer reviewed; Journal article, 2023)
      Managers and stakeholders increasingly ask whether predation is a driving force behind the poor status of many species, and whether predator control is likely to be a successful management action to intervene. We review ...

    • Prospects for the future of pink salmon in three oceans: From the native Pacific to the novel Arctic and Atlantic 

      Lennox, Robert; Berntsen, Johan Henrik Hårdensson; Garseth, Åse Helen; Hinch, Scott G.; Hindar, Kjetil; Ugedal, Ola; Utne, Kjell Rong; Vollset, Knut Wiik; Whoriskey, Frederick G.; Thorstad, Eva Bonsak (Peer reviewed; Journal article, 2023)
      While populations of other migratory salmonids suffer in the Anthropocene, pink salmon (Oncorhynchus gorbusca Salmonidae) are thriving, and their distribution is expanding both within their natural range and in the Atlantic ...

    • Rømt oppdrettslaks i vassdrag i 2020 - Rapport fra det nasjonale overvåkningsprogrammet 

      Wennevik, Vidar; Ambjørndalen, Vegard M.; Aronsen, Tonje; Bakke, Gunnar O; Barlaup, Bjørn Torgeir; Diserud, Ola Håvard; Fiske, Peder; Fjeldheim, Per Tommy; Florø-Larsen, Bjørn; Glover, Kevin Alan; Heino, Mikko Petteri; Næsje, Tor; Skaala, Øystein; Skoglund, Helge; Solberg, Ingrid; Solberg, Monica Favnebøe; Sægrov, Harald; Urdal, Kurt; Utne, Kjell Rong (Rapport fra havforskningen;2021 - 27, Research report, 2021)
      I 2014 ble et nytt nasjonalt overvåkningsprogram for rømt oppdrettslaks i vassdrag utformet og etablert på oppdrag fra Fiskeridirektoratet etter føringer fra Nærings- og Fiskeridepartementet. Dette overvåkingsprogrammet ...

    • Rømt oppdrettslaks i vassdrag i 2022 — Rapport fra det Nasjonale Overvåkningsprogrammet for Rømt Oppdrettslaks 

      Wennevik, Vidar; Næsje, Tor; Ambjørndalen, Vegard M.; Aronsen, Tonje; Diserud, Ola Håvard; Fjeldheim, Per Tommy; Florø-Larsen, Bjørn; Heino, Mikko Petteri; Kambestad, Marius; Skaala, Øystein; Skoglund, Helge; Solberg, Monica Favnebøe; Solberg, Ingrid; Stöger, Elisabeth; Sægrov, Harald; Thorstad, Eva Bonsak; Tønder, Tine Solvoll; Urdal, Kurt; Utne, Kjell Rong (Rapport fra havforskningen;2023 - 30, Research report, 2023)
      Det nasjonale programmet for overvåking av rømt oppdrettslakshar vurdert innslaget av rømt oppdrettslaks i 195 vassdrag i 2022. Vassdragene som er overvåket, er valgt ut fra en rekke kriterier. Blant disse er god geografisk ...