Bilde av Amundsen, Per-Arne
Bilde av Amundsen, Per-Arne
Department of Arctic and Marine Biology per-arne.amundsen@uit.no 91833497 You can find me here

Per-Arne Amundsen


Professor in freshwater ecology

Job description

Freshwater fish ecology

I am a freshwater fish ecologist interested in the ecology and management of northern freshwater systems with special emphasis on food web and trophic interactions and the impact of stressors like biological invasions, climate change, habitat modifications and pollution. My main research activities are related to long-term ecological studies on the role of predation, parasitism and competition in the population and community ecology of freshwater fish.


  • Per-Arne Amundsen, Nina Matilda Henriksson, Amanda Poste, Sebastian Prati, Michael Power :
    Ecological Drivers of Mercury Bioaccumulation in Fish of a Subarctic Watercourse
    Environmental Toxicology and Chemistry 2023 ARKIV / DOI
  • Aslak Smalås, Raul Primicerio, Kimmo K. Kahilainen, Petr Terentyev, Nikolay Kashulin, Elena Zubova et al.:
    Increased importance of cool-water fish at high latitudes emerges from individual-level responses to warming
    Ecology and Evolution 06. June 2023 ARKIV / DOI
  • Nicholas Kotowych, Aslak Smalås, Per-Arne Amundsen, Raul Primicerio :
    Climate warming accelerates somatic growth of an Arctic fish species in high-latitude lakes
    Scientific Reports 2023 ARKIV / DOI
  • Stephanie A. Blain, Dolph Schluter, Colin E. Adams, Per-Arne Amundsen, Rune Knudsen, Louise Chavarie :
    Patterns and repeatability of multi-ecotype assemblages of sympatric salmonids
    Global Ecology and Biogeography 04. October 2023 ARKIV / DOI
  • Javier Sanchez-Hernandez, Sebastian Prati, Eirik Haugstvedt Henriksen, Aslak Smalås, Rune Knudsen, Anders Klemetsen et al.:
    Exploring temporal patterns in fish feeding ecology: Are ontogenetic dietary shifts stable over time?
    Reviews in Fish Biology and Fisheries 2022 DOI
  • Miroslava Soldánová, Ana Born-Torrijos, Roar Kristoffersen, Rune Knudsen, Per-Arne Amundsen, Tomas Scholz :
    Cercariae of a Bird Schistosome Follow a Similar Emergence Pattern under Different Subarctic Conditions: First Experimental Study
    Pathogens 2022 ARKIV / DOI
  • Eirik Haugstvedt Henriksen, André Frainer, Robert Poulin, Rune Knudsen, Per-Arne Amundsen :
    Ectoparasites population dynamics are affected by host body size but not host density or water temperature in a 32-year long time series
    Oikos 2022 ARKIV / DOI
  • Ana Born-Torrijos, Gabrielle S. Van Beest, Tereza Vyhlídalová, Rune Knudsen, Roar Kristoffersen, Per-Arne Amundsen et al.:
    Taxa-specific activity loss and mortality patterns in freshwater trematode cercariae under subarctic conditions
    Parasitology 2021 ARKIV / DOI
  • Javier Sanchez-Hernandez, Anders Gravbrøt Finstad, Jo Vegar Arnekleiv, Gaute Kjærstad, Per-Arne Amundsen :
    Beyond ecological opportunity: prey diversity rather than abundance shapes predator niche variation
    Freshwater Biology 2021 ARKIV / DOI
  • Sebastian Prati, Eirik Haugstvedt Henriksen, Aslak Smalås, Rune Knudsen, Anders Klemetsen, Javier Sanchez-Hernandez et al.:
    The effect of inter- and intraspecific competition on individual and population niche widths: a four-decade study on two interacting salmonids
    Oikos 2021 ARKIV / DOI
  • Ana Born-Torrijos, Rachel Paterson, Gabrielle van Beest, Tereza Vyhlídalová, Eirik Haugstvedt Henriksen, Rune Knudsen et al.:
    Cercarial behaviour alters the consumer functional response of three-spined sticklebacks
    Journal of Animal Ecology 2021 ARKIV / DOI
  • Brianne Kelly, Per-Arne Amundsen, Michael Power :
    Trophic niche segregation among native whitefish and invasive vendace in a north Norwegian lake system
    Ecology of Freshwater Fish 2021 ARKIV / DOI
  • Cornelya Klutsch, Simo Maduna, Natalia Polikarpova, Kristin Forfang, Benedicte Lissner Beddari, Karl Øystein Gjelland et al.:
    Temporal analysis shows relaxed genetic erosion following improved stocking practices in a subarctic transnational brown trout population
    Scientific Reports 2021 ARKIV / DOI
  • Antti Eloranta, Anders Gravbrøt Finstad, Odd Terje Sandlund, Rune Knudsen, Anna Kuparinen, Per-Arne Amundsen :
    Species interactions, environmental gradients and body size shape population niche width
    Journal of Animal Ecology 2021 FULLTEKST / ARKIV / DOI
  • K. Alfredsen, P.-A. Amundsen, L. Hahn, P.M. Harrison, Ingeborg Palm Helland, E.G. Martins et al.:
    A synoptic history of the development, production and environmental oversight of hydropower in Brazil, Canada, and Norway
    Hydrobiologia 2021 ARKIV / DOI
  • Sebastian Prati, Eirik Haugstvedt Henriksen, Rune Knudsen, Per-Arne Amundsen :
    Seasonal dietary shifts enhance parasite transmission to lake salmonids during ice cover
    Ecology and Evolution 2020 ARKIV / DOI
  • Jenny Carolyn Shaw, Eirik Haugstvedt Henriksen, Rune Knudsen, Jesper Andreas Kuhn, Armand M. Kuris, Kevin D. Lafferty et al.:
    High parasite diversity in the amphipod Gammarus lacustris in a subarctic lake
    Ecology and Evolution 2020 ARKIV / DOI
  • Anders Klemetsen, Berit Margrethe Aase, Per-Arne Amundsen :
    Diversity, abundance, and life histories of littoral chydorids (Cladocera: Chydoridae) in a subarctic European lake
    Journal of Crustacean Biology 2020 ARKIV / DOI
  • Sebastian Prati, Eirik Haugstvedt Henriksen, Rune Knudsen, Per-Arne Amundsen :
    Impacts of ontogenetic dietary shifts on the food-transmitted intestinal parasite communities of two lake salmonids
    International Journal for Parasitology: Parasites and Wildlife 2020 ARKIV / DOI
  • Sam Wenaas Perrin, Göran Englund, Stefan Blumentrath, Robert Brian OHara, Per-Arne Amundsen, Anders Gravbrøt Finstad :
    Integrating dispersal along freshwater ecosystems into species distribution models
    Diversity and Distributions: A Journal of Conservation Biogeography 2020 ARKIV / DOI
  • Xavier Thibert-Plante, Kim Præbel, Kjartan Østbye, Kimmo Kalevi Kahilainen, Per-Arne Amundsen, Sergey Gavrilets :
    Using mathematical modelling to investigate the adaptive divergence of whitefish in Fennoscandia
    Scientific Reports 2020 ARKIV / DATA / FULLTEKST / DOI
  • Ana Born-Torrijos, Rachel Paterson, Gabrielle van Beest, Jessica Schwelm, Tereza Vyhlídalová, Eirik Haugstvedt Henriksen et al.:
    Temperature does not influence functional response of amphipods consuming different trematode prey
    Parasitology Research 2020 ARKIV / DOI
  • Paolo Maria Moccetti, Anna Siwertsson, Runar Kjær, Per-Arne Amundsen, Kim Præbel, Ana-Maria Peris Tamayo et al.:
    Contrasting patterns in trophic niche evolution of polymorphic Arctic charr populations in two subarctic Norwegian lakes
    Hydrobiologia 2019 ARKIV / DOI
  • Eirik Haugstvedt Henriksen, André Frainer, Rune Knudsen, Roar Kristoffersen, Armand M. Kuris, Kevin D. Lafferty et al.:
    Fish culling reduces tapeworm burden in Arctic charr by increasing parasite mortality rather than by reducing density-dependent transmission
    Journal of Applied Ecology 2019 ARKIV / DOI
  • Javier Sanchez-Hernandez, Anders Gravbrøt Finstad, Jo Vegar Arnekleiv, Gaute Kjærstad, Per-Arne Amundsen :
    Drivers of diet patterns in a globally distributed freshwater fish species
    Canadian Journal of Fisheries and Aquatic Sciences 2019 ARKIV / DOI
  • Sarah M. Laske, Per-Arne Amundsen, Kirsten Seestern Christoffersen, Jaakko Erkinaro, Guðni Guðbergsson, Brian Hayden et al.:
    Circumpolar patterns of Arctic freshwater fish biodiversity: A baseline for monitoring
    Freshwater Biology 2019 ARKIV / DOI
  • Per-Arne Amundsen, Javier Sanchez-Hernandez :
    Feeding studies take guts - critical review and recommendations of methods for stomach contents analysis in fish
    Journal of Fish Biology 2019 ARKIV / DOI
  • Hans Fredrik Veiteberg Braaten, Staffan Åkerblom, Kimmo Kalevi Kahilainen, Martti Rask, Jussi Vuorenmaa, Jaakko Mannio et al.:
    Improved Environmental Status: 50 Years of Declining Fish Mercury Levels in Boreal and Subarctic Fennoscandia
    Environmental Science and Technology 2019 ARKIV / DOI
  • Skuli Skulason, Kevin J Parsons, Richard Svanback, Katja Räsänen, Moira M Ferguson, Colin Ean Adams et al.:
    A way forward with eco evo devo: an extended theory of resource polymorphism with postglacial fishes as model systems
    Biological Reviews 2019 FULLTEKST / ARKIV / DOI
  • Stephen M Thomas, Martin J. Kainz, Per-Arne Amundsen, Brian Hayden, Sami Johan Taipale, Kimmo Kalevi Kahilainen :
    Resource polymorphism in European whitefish: Analysis of fatty acid profiles provides more detailed evidence than traditional methods alone
    PLOS ONE 2019 ARKIV / DOI
  • Aslak Smalås, John Fredrik Strøm, Per-Arne Amundsen, Ulf Dieckmann, Raul Primicerio :
    Climate warming is predicted to enhance the negative effects of harvesting on high‐latitude lake fish
    Journal of Applied Ecology 2019 ARKIV / DOI
  • Ida Beitnes Johansen, Eirik Haugstvedt Henriksen, Jenny Carolyn Shaw, Ian Mayer, Per-Arne Amundsen, Øyvind Øverli :
    Contrasting associations between breeding coloration and parasitism of male Arctic charr relate to parasite species and life cycle stage
    Scientific Reports 2019 ARKIV / DOI
  • B. Hayden, C. Harrod, S.M. Thomas, Antti Eloranta, J.‐P. Myllykangas, Anna Siwertsson et al.:
    From clear lakes to murky waters – tracing the functional response of high-latitude lake communities to concurrent ‘greening’ and ‘browning’
    Ecology Letters 2019 ARKIV / DOI
  • Cornelya Klutsch, Simo Maduna, Natalia Polikarpova, Kristin Forfang, Paul Eric Aspholm, Tommi Nyman et al.:
    Genetic changes caused by restocking and hydroelectric dams in demographically bottlenecked brown trout in a transnational subarctic riverine system
    Ecology and Evolution 2019 ARKIV / DOI
  • Katja Häkli, Kjartan Østbye, Kimmo Kalevi Kahilainen, Per-Arne Amundsen, Kim Præbel :
    Diversifying selection drives parallel evolution of gill raker number and body size along the speciation continuum of European whitefish
    Ecology and Evolution 2018 ARKIV / DOI
  • Javier Sanchez-Hernandez, Per-Arne Amundsen :
    Ecosystem type shapes trophic position and omnivory in fishes
    Fish and Fisheries 2018 ARKIV / DOI
  • André Frainer, Brendan G. McKie, Per-Arne Amundsen, Rune Knudsen, Kevin Lafferty :
    Parasitism and the Biodiversity-Functioning Relationship
    Trends in Ecology & Evolution 2018 ARKIV / DOI
  • Cornelya Klutsch, Simo Maduna, Natalia Polikarpova, Kristin Forfang, Benedicte Beddari, Karl Øystein Gjelland et al.:
    Genetic diversity and fish ecology in Pasvik river
    2022
  • Miroslava Soldánová, Ana Born-Torrijos, Rune Knudsen, Per-Arne Amundsen :
    Lake Takvatn, Norway – a field laboratory of subarctic parasitology
    2022
  • Per-Arne Amundsen :
    Long-term effects of a biological invasion - the vendace invasion in the Pasvik watercourse
    2022
  • Per-Arne Amundsen :
    Takvatnprosjektet - kultivering og forvaltning av en overbefolka fiskebestand
    2021
  • Cornelya Klutsch, Simo Maduna, Natalia Polikarpova, Kristin Forfang, Benedicte Beddari, Karl Øystein Gjelland et al.:
    Fish Project in the Pasvik River
    2021
  • Per-Arne Amundsen :
    Long-term ecological monitoring in the Pasvik watercourse (1991-2020)
    2021
  • Cornelya Klutsch, Vetle Schwensen Lindgren, Simo Maduna, Natalia Polikarpova, Tommi Nyman, Kristin Forfang et al.:
    Restoration effects on trout populations in Pasvik River
    2019
  • Cornelya Klutsch, Vetle Schwensen Lindgren, Simo Maduna, Natalia Polikarpova, Tommi Nyman, Paul Eric Aspholm et al.:
    Impacts of hydroelectric power dams and stocking on population genetic diversity and structure in brown trout in a subarctic river system
    2019
  • Cornelya Klutsch, Vetle Schwensen Lindgren, Thrond Oddvar Haugen, Natalia Polikarpova, Paul Eric Aspholm, Ida Fløystad et al.:
    Metapopulation genetic dynamics of brown trout (Salmo trutta) in a subarctic transnational riverine system
    2019
  • Eirik Haugstvedt Henriksen, Aslak Smalås, Per-Arne Amundsen, Rune Knudsen :
    The association between parasite infection and growth in Arctic charr
    2018
  • Aslak Smalås, Eirik Haugstvedt Henriksen, Rune Knudsen, Per-Arne Amundsen, Karl Øystein Gjelland, Geir Dahl-Hansen et al.:
    Temperature-Size rule in Arctic charr
    2018
  • Per-Arne Amundsen :
    Takvatn - økologi og kultivering av en overbefolket fiskebestand
    2018
  • Sam Perrin, Robert B. O'Hara, Per-Arne Amundsen, Stefan Blumentrath, Anders Gravbrøt Finstad :
    Predicting the effects of invasive species on fish at a community level in the face of climate change
    2018

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    Publications outside Cristin

    Google Scholar Per-Arne Amundsen 

    Scientific and popular science publications

     >200 scientific publications in peer-reviewed journals and book

     71 popular science publications and reports


    Research interests

    • Freshwater ecology
    • Population and community ecology of freshwater fish
    • Trophic ecology, food webs and ecological interactions
    • Long-term ecological research
    • Competition, predation and parasitism
    • Polymorphism and incipient speciation of fish in postglacial lakes
    • Invasion biology
    • Climate change and environmental challenges
    • Environmental impacts of mercury and other heavy metal pollution
    • Management and rehabilitation of fish populations

    Teaching

    • Bio-3505 Ecological interactions
    • Bio-3521 Seminars in freshwater ecology
    • Bio-2017 Økologi
    • Bio-3513A Term paper in freshwater ecology

    Supervision of master and PhD candidates


    Member of research group