• Feeding ecology of piscivorous brown trout (Salmo trutta L.) in a subarctic watercourse 

      Jensen, Hallvard; Bøhn, Thomas; Amundsen, Per-Arne; Aspholm, Paul Erik (Journal article; Tidsskriftartikkel; Peer reviewed, 2004-02)
      Feeding ecology of piscivorous brown trout was studied in the Pasvik watercourse, Norway and Russia. The watercourse is heavily regulated for hydroelectric purposes, and 5000 brown trout > 25 cm are stocked annually to compensate the negative impacts of the impoundments. Stocked and wild trout had almost identical diets consisting mainly of vendace Coregonus albula and partly of whitefish Coregonus ...
    • On the numerous concepts in invasion biology 

      Falk-Petersen, Jannike; Bøhn, Thomas; Sandlund, Odd Terje (Journal article; Tidsskriftartikkel; Peer reviewed, 2006-01-20)
      The study of biological invasions has triggered the production of a diversity of concepts. The terminology has, however, often been applied inconsistently and inaccurately. This article lists and assesses the most commonly used terms and concepts in invasion ecology. In each case the most coherent definition and use is suggested.