Blar i Brage INN på forfatter "Hagen, Bjørn Roar"

Viser treff 1-4 av 4

    • Declining reproductive output in capercaillie and black grouse – 16 countries and 80 years 

      Jahren, Torfinn; Storaas, Torstein; Willebrand, Tomas; Moa, Pål Fossland; Hagen, Bjørn Roar (Journal article; Peer reviewed, 2016)
      Declines in populations of capercaillie (Tetrao urogallus) and black grouse (Lyrurus tetrix) have been reported from both Central Europe and the continuous boreal forests of Fennoscandia. While intensified land-use is ...

    • Estimating ungulate carrion biomass and possible ecological effects on red fox (Vulpes vulpes) in central Norway 

      Hagen, Bjørn Roar (Master thesis, 2014)
      Ungulates constitute the bulk of carrion in many terrestrial ecosystems. Knowledge of carrion availability is paramount to understand its ecological effects and I aimed to estimate carrion availability in Nord-Trøndelag ...

    • Rapport for skogsfugltaksering 2005–2008 

      Solvang, Håkon; Pedersen, Hans Christian; Storaas, Torstein; Hagen, Bjørn Roar (Oppdragsrapport, Research report, 2009)
      Norsk: Som en større dugnad med fuglehundfolk, jegere og grunneiere som deltagere, har vi gjennomført skogsfugltakseringer i årene 2002–2008. Fra 2006 har takseringene også inngått som en sentral del av Rypeforvaltningsprosjektet ...

    • Scavenging on a pulsed resource: quality matters for corvids but density for mammals 

      Gomo, Gjermund; Mattisson, Jenny; Hagen, Bjørn Roar; Moa, Pål Fossland; Willebrand, Tomas (Journal article; Peer reviewed, 2017)
      Background: Human food subsidies can provide predictable food sources in large quantities for wildlife species worldwide. In the boreal forest of Fennoscandia, gut piles from moose (Alces alces) harvest provide a potentially ...