Blar i forfatter "Kahilainen, Kimmo K."

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    • Ecological speciation in postglacial European whitefish: rapid adaptive radiations into the littoral, pelagic, and profundal lake habitats 

      Præbel, Kim; Knudsen, Rune; Siwertsson, Anna; Karhunen, Markku; Kahilainen, Kimmo K.; Ovaskainen, Otso; Østbye, Kjartan; Peruzzi, Stefano; Fevolden, Svein-Erik; Amundsen, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2013)
      Understanding how a monophyletic lineage of a species diverges into several adaptive forms has received increased attention in recent years, but the underlying mechanisms in this process are still under debate. Postglacial fishes are excellent model organisms for exploring this process, especially the initial stages of ecological speciation, as postglacial lakes represent replicated discrete ...

    • Increased importance of cool-water fish at high latitudes emerges from individual-level responses to warming 

      Smalås, Aslak; Primicerio, Raul; Kahilainen, Kimmo K.; Terentjev, Petr; Kashulin, Nikolay; Zubova, Elena; Amundsen, Per-Arne (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-06)
      High latitude ecosystems are experiencing the most rapid warming on earth, expected to trigger a diverse array of ecological responses. Climate warming affects the ecophysiology of fish, and fish close to the cold end of their thermal distribution are expected to increase somatic growth from increased temperatures and a prolonged growth season, which in turn affects maturation schedules, reproduction, ...

    • Lake size and fish diversity determine resource use and trophic position of a top predator in high-latitude lakes 

      Eloranta, Antti; Kahilainen, Kimmo K.; Amundsen, Per-Arne; Knudsen, Rune; Harrod, Chris; Jones, Roger I. (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-03-23)
      Prey preference of top predators and energy flow across habitat boundaries are of fundamental importance for structure and function of aquatic and terrestrial ecosystems, as they may have strong effects on production, species diversity, and food-web stability. In lakes, littoral and pelagic food-web compartments are typically coupled and controlled by generalist fish top predators. However, the ...

    • Polyunsaturated fatty acids in freshwater fishes increase with total lipids irrespective of feeding sources and trophic position 

      Kainz, M.J.; Hager, H.H.; Rasconi, S.; Kahilainen, Kimmo K.; Amundsen, Per-Arne; Hayden, B. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-04-03)
      Trophic transfer and retention of dietary compounds are vital for somatic development, reproduction, and survival of aquatic consumers. In this field study, stable carbon and nitrogen isotopes, and fatty acids (FA) contents in invertebrates and fishes of pre-alpine Lake Lunz, Austria, were used to (1) identify the resource use and trophic level of Arctic charr (Salvelinus alpinus), pike (Esox lucius), ...

    • Predation by brown trout (Salmo trutta) along a diversifying prey community gradient 

      Jensen, Hallvard; Kahilainen, Kimmo K.; Amundsen, Per-Arne; Gjelland, Karl øystein; Tuomaala, Anti; Malinen, Tommy; Bøhn, Thomas (Journal article; Tidsskriftartikkel; Peer reviewed, 2008-08-07)
      Predation has a fundamental role in aquatic ecosystems, but the relative importance of factors governing prey selection by predators remains controversial. In this study, we contrast five lakes of a subarctic watershed to explore how prey community characteristics affect prey selection and growth rate of the common top predator, brown trout (<i>Salmo trutta</i>). The lakes constitute a distinct ...

    • Spatial and temporal trends of mercury in freshwater fish in Fennoscandia (1965-2015) 

      Braaten, Hans Fredrik Veiteberg; Åkerblom, Staffan; de Wit, Heleen; Skotte, Gunnar; Rask, Martti; Vuorenmaa, Jussi; Kahilainen, Kimmo K.; Malinen, Tommi; Rognerud, Sigurd; Lydersen, Espen; Amundsen, Per-Arne; Kashulin, Nicholas; Kashulina, Tatiana; Terentyev, Petr; Christensen, Guttorm; Jackson-Blake, Leah Amber; Lund, Espen; Rosseland, Bjørn Olav (Research report; Forskningsrapport, 2017-09)
      Mercury (Hg) emissions to the atmosphere cause elevated Hg levels in fish, even in many remote regions of the world. Here we present an extensive database of more than 50 000 measurements of Hg in fish, including 2 775 individual water bodies in Fennoscandia (Norway, Sweden, Finland, Russian part of Kola Peninsula) sampled between 1965 and 2015. The data have been analysed for spatial patterns and ...