Blar i Scientific publications på forfatter "Fiske, Peder"

Viser treff 1-20 av 21

    • Considering sampling bias in close-kin mark–recapture abundance estimates of Atlantic salmon 

      Wacker, Sebastian; Skaug, Hans Julius; Forseth, Torbjørn; Solem, Øyvind; Ulvan, Eva Marita; Fiske, Peder; Karlsson, Sten (Peer reviewed; Journal article, 2021)
      Genetic methods for the estimation of population size can be powerful alternatives to conventional methods. Close-kin mark–recapture (CKMR) is based on the principles of conventional mark–recapture, but instead of being ...

    • Escape history and proportion of farmed Atlantic salmon Salmo salar on the coast and in an adjacent salmon fjord in Norway 

      Aronsen, Tonje; Ulvan, Eva Marita; Næsje, Tor; Fiske, Peder (Peer reviewed; Journal article, 2020)
      To gain more knowledge about escaped farmed salmon Salmo salar in the wild, we investigated the proportion of escapees, body length at escape, proportion escaped as smolts/post-smolts (≤300 mm) and number of winters in the ...

    • Escaped farmed Atlantic salmon grow, migrate and disperse throughout the Arctic Ocean like wild salmon 

      Jensen, Arne Johan; Karlsson, Sten; Fiske, Peder; Hansen, Lars Petter; Hindar, Kjetil; Østborg, Gunnel Marie (Peer reviewed; Journal article, 2013)
      This paper describes the first observations of escaped farmed Atlantic salmon Salmo salar in the Arctic Ocean. Among 138 individuals of Atlantic salmon captured at the west coast of the Spitsbergen Island at Svalbard in ...

    • Escaped farmed Atlantic salmon in Norwegian rivers during 1989–2013 

      Diserud, Ola Håvard; Fiske, Peder; Sægrov, Harald; Urdal, K.; Aronsen, Tonje; Lo, Håvard; Barlaup, Bjørn Torgeir; Niemela, Eero; Orell, P.; Erkinaro, J.; Lund, Roar A.; Økland, Finn; Østborg, Gunnel Marie; Hansen, Lars Petter; Hindar, Kjetil (Journal article; Peer reviewed, 2019)
      We report on the data from an extensive monitoring programme for the occurrence of escaped farmed Atlantic salmon (Salmo salar) in Norwegian rivers for 25 years. This monitoring started as a 3-year research programme in ...

    • Evidence for the linkage of survival of anadromous Arctic char and brown trout during winter to marine growth during the previous summer 

      Jensen, Arne Johan; Finstad, Bengt; Fiske, Peder (Journal article; Peer reviewed, 2017)

    • Gene flow from domesticated escapes alters thelife history of wild Atlantic salmon 

      Bolstad, Geir Hysing; Hindar, Kjetil; Robertsen, Grethe; Jonsson, Bror; Sægrov, Harald; Diserud, Ola Håvard; Fiske, Peder; Jensen, Arne Johan; Urdal, Kurt; Næsje, Tor; Barlaup, Bjørn Torgeir; Florø-Larsen, Bjørn; Lo, Håvard; Niemela, Eero; Karlsson, Sten (Journal article, 2017)
      Interbreeding between domesticated and wild animals occurs in several species. This gene flow has long been anticipated to induce genetic changes in life-history traits of wild populations, thereby influencing population ...

    • Ice-dependent winter survival of juvenile Atlantic salmon 

      Hedger, Richard David; Næsje, Tor; Fiske, Peder; Ugedal, Ola; Finstad, Anders Gravbrøt; Thorstad, Eva Bonsak (Peer reviewed; Journal article, 2013)
      Changes in snow and ice conditions are some of the most distinctive impactsof global warming in cold temperate and Arctic regions, altering the environ-ment during a critical period for survival for most animals. Laboratories ...

    • Introgression from farmed escapees affects the full life cycle of wild Atlantic salmon 

      Bolstad, Geir Hysing; Karlsson, Sten; Hagen, Ingerid Julie; Fiske, Peder; Urdal, Kurt; Sægrov, Harald; Florø-Larsen, Bjørn; Sollien, Vegard Pedersen; Østborg, Gunnel Marie; Diserud, Ola Håvard; Jensen, Arne Johan; Hindar, Kjetil (Peer reviewed; Journal article, 2021)
      After a half a century of salmon farming, we have yet to understand how the influx of genes from farmed escapees affects the full life history of Atlantic salmon (Salmo salar L.) in the wild. Using scale samples of over ...

    • Iteroparity and its contribution to life-history variation in Atlantic salmon 

      Persson, Lo; Raunsgard, Astrid; Thorstad, Eva Bonsak; Østborg, Gunnel Marie; Urdal, Kurt; Sægrov, Harald; Ugedal, Ola; Hindar, Kjetil; Karlsson, Sten; Fiske, Peder; Bolstad, Geir Hysing (Peer reviewed; Journal article, 2023)
      Evolution of iteroparity is shaped by the trade-off between current and future reproduction.We studied variation in iteroparity among 205 050 individual Atlantic salmon caught in 179 rivers spanning 14◦ of latitude. The ...

    • Natural and anthropogenic drivers of escaped farmed salmon occurrence and introgression into wild Norwegian Atlantic salmon populations 

      Diserud, Ola Håvard; Fiske, Peder; Karlsson, Sten; Glover, Kevin Alan; Næsje, Tor; Aronsen, Tonje; Bakke, Gunnar O; Barlaup, Bjørn Torgeir; Erkinaro, J.; Florø-Larsen, Bjørn; Foldvik, Anders; Heino, Mikko Petteri; Kanstad-Hanssen, Øyvind; Lo, Håvard; Lund, Roar Asbjørn; Muladal, R.; Niemela, E.; Økland, Finn; Østborg, Gunnel Marie; Otterå, Håkon Magne; Skaala, Øystein; Skoglund, Helge; Solberg, Ingrid; Solberg, Monica Favnebøe; Sollien, Vegard Pedersen; Sægrov, Harald; Urdal, Kurt; Wennevik, Vidar; Hindar, Kjetil (Peer reviewed; Journal article, 2022)
      Marine aquaculture of Atlantic salmon (Salmo salar) is a relatively new industry where breeding programs have led to rapid genetic change in the captive populations that were built up alongside conspecific wild individuals. ...

    • 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 ...

    • Pink salmon in Norway: the reluctant invader 

      Sandlund, Odd Terje; Berntsen, Henrik Hårdensson; Fiske, Peder; Kuusela, Jorma; Muladal, Rune; Niemelä, Eero; Uglem, Ingebrigt; Forseth, Torbjørn; Mo, Tor Atle; Thorstad, Eva B.; Veselov, Alexey E.; Vollset, Knut Wiik; Zubchenko, Alexander V. (Peer reviewed; Journal article, 2018)
      In 2017, Norway experienced an invasion of the Pacific salmonid pink salmon (Oncorhynchus gorbuscha) in numbers never before seen in rivers all along the coast. Significant numbers were also caught in other parts of ...

    • The pink salmon invasion: a Norwegian perspective 

      Mo, Tor Atle; Thorstad, Eva Bonsak; Sandlund, Odd Terje; Berntsen, Johan Henrik Hårdensson; Fiske, Peder; Uglem, Ingebrigt (Peer reviewed; Journal article, 2018)
      In the period 1956–1979, more than 220 million of pink salmon Oncorhynchus gorbuscha (Walbaum 1792) eggs from the southern part of Sakhalin Island in the Pacific Ocean were transported to the northwestern part of Russia ...

    • 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 ...

    • Recovery of young brown trout (Salmo trutta) in acidified streams: What are the critical values for acid-neutralizing capacity? 

      Hesthagen, Trygve; Fiske, Peder; Saksgård, Randi (Journal article; Peer reviewed, 2016)
      The recovery of young allopatric brown trout (Salmo trutta) grouped into YoY (age 0þ) and older parr (age 1þ) fish, was studied in acid-sensitive streams in a Norwegian watershed during a 24-year-period (1987e2010). ...

    • Relationship between marine growth and sea survival of two anadromous salmonid fish species 

      Jensen, Arne Johan; Finstad, Bengt; Fiske, Peder; Forseth, Torbjørn; Rikardsen, Audun H.; Ugedal, Ola (Journal article; Peer reviewed, 2017)
      This study found empirical evidence supporting the “growth–survival” paradigm in the marine phase of Arctic char (Salvelinus alpinus) and brown trout (Salmo trutta). The paradigm postulates that larger or faster-growing ...

    • Repeatable individual variation in migration timing in two anadromous salmonids and ecological consequences 

      Jensen, Arne Johan; Finstad, Bengt; Fiske, Peder; Diserud, Ola Håvard; Thorstad, Eva Bonsak (Peer reviewed; Journal article, 2020)
      Consistent individual differences in behavior have been demonstrated for many animals, but there are few studies of consequences of such repeated behavior in the wild. We tested consistency in migration timing to and from ...

    • Temporal shifts in the marine feeding of individual Atlantic salmon inferred from scale isotope ratios 

      Power, Michael; Thorstad, Eva Bonsak; Forseth, Torbjørn; Fiske, Peder (Peer reviewed; Journal article, 2023)
      Given the limited information on prey use during the marine residency period for Atlantic salmon, scales were collected from salmon at return to the River Namsen (Norway) for spawning after 1 year at sea, and scale material ...

    • The cost of anadromy: marine and freshwater mortality rates in anadromous Arctic char and brown trout in the Arctic region of Norway 

      Jensen, Arne Johan; Finstad, Bengt; Fiske, Peder (Peer reviewed; Journal article, 2019)
      It is hypothesized that in diadromous fish, migrations may occur because of differences in the availability of food in marine and freshwater habitats. The benefits of migration to sea may be increased growth opportunities ...

    • The risk of individual fish being captured multiple times in a catch and release fishery 

      Thorstad, Eva B.; Diserud, Ola Håvard; Solem, Øyvind; Havn, Torgeir Børresen; Bjørum, Lars Rasmus Oftedal; Kristensen, Torstein; Urke, Henning Andre; Johansen, Martin Rognli; Lennox, Robert J.; Fiske, Peder; Uglem, Ingebrigt (Peer reviewed; Journal article, 2019)
      The proportion of angled Atlantic salmon Salmo salar L. being caught and released has increased. If individuals are repeatedly captured, this may have fish welfare consequences. Of 995 Atlantic salmon tagged during catch ...