Blar i forfatter "Thingnes, Anders Voss"

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    • Arctic greening and bird nest predation risk across tundra ecotones 

      Ims, Rolf Anker; Henden, John-André; Strømeng, Marita Anti; Thingnes, Anders Voss; Garmo, Mari; Jepsen, Jane Uhd (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-01)
      Alarming global-scale declines of bird numbers are occurring under the changing climate, and species belonging to alpine and Arctic tundra are particularly affected. Increased nest predation appears to be involved4, but the mechanisms linking predation to climate change remain to be shown. Here we test the prediction from food web theory that increased primary productivity (greening of tundra) in a ...

    • Indirect food web interactions mediated by rodent cycles: Relative roles of lemmings and voles 

      Ims, Rolf Anker; Henden, John-André; Thingnes, Anders Voss; Killengreen, Siw Turid (Journal article; Tidsskriftartikkel; Peer reviewed, 2013-12-23)
      Production cycles in birds are proposed as prime cases of indirect interactions in food webs. They are thought to be driven by predators switching from rodents to bird nests in the crash phase of rodent population cycles. Although rodent cycles are geographically widespread and found in different rodent taxa, bird production cycles appear to be most profound in the high Arctic where lemmings ...