Blar i forfatter Norges arktiske universitetsmuseum "Pedersen, Torstein"

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    • Black-legged Kittiwake Rissa tridactyla adults and chicks share the same diet in the southern Barents Sea 

      Thorvaldsen, Renate; Barrett, Robert T.; Pedersen, Torstein (Journal article; Tidsskriftartikkel; Peer reviewed, 2015)
      The Black-legged Kittiwake Rissa tridactyla population is declining throughout its North Atlantic range. In Norway, the species is classified as Endangered on the Norwegian Red List. Studies of diet are one important requirement for effective management of any species. Because it is easier to sample, chick diet has often been considered a proxy for adult diet in many seabird studies, but the ...

    • Optimal foraging in chick-raising Common Guillemots (Uria aalge) 

      Bugge, Julie; Barrett, Robert T.; Pedersen, Torstein (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      The Norwegian population of the Common Guillemot Uria aalge has declined by > 95% since the 1960s, and is classified as critically endangered in the Norwegian Red List. Much of the recent decline has been attributed to reduced food availability, but without extensive documentation of adult diet. Instead, chick diet has been considered a proxy of adult diet during the breeding season in many Norwegian ...