• An integrated population model for a long-lived ungulate: more efficient data use with Bayesian methods 

      Lee, Aline Magdalena; Bjørkvoll, Eirin Marie; Hansen, Brage Bremset; Albon, Steve D.; Stien, Audun; Sæther, Bernt-Erik; Engen, Steinar; Veiberg, Vebjørn; Loe, Leif Egil; Grøtan, Vidar (Journal article; Peer reviewed, 2015)
      We develop an integrated population model for Svalbard reindeer Rangifer tarandus platyrhynchus, and demonstrate how this type of model can be used to extract more information from the data and separate different sources ...
    • Antler growth as a cost of reproduction in female reindeer 

      Loe, Leif Egil; Pigeon, Gabriel; Albon, Steve D.; Giske, Pernille Andrine Eriksdatter; Irvine, R. Justin; Ropstad, Erik; Stien, Audun; Veiberg, Vebjørn; Mysterud, Atle (Peer reviewed; Journal article, 2019)
      The costs of reproduction are important in shaping individual life histories, and hence population dynamics, but the mechanistic pathways of such costs are often unknown. Female reindeer have evolved antlers possibly due ...
    • Behavioral buffering of extreme weather events in a high-Arctic herbivore 

      Loe, Leif Egil; Hansen, Brage Bremset; Stien, Audun; Albon, Steve D.; Bischof, Richard; Carlsson, Anja M.; Irvine, Justin; Meland, Morten; Rivrud, Inger Maren; Ropstad, Erik; Veiberg, Vebjørn; Mysterud, Atle (Journal article; Peer reviewed, 2016)
      As global warming advances, there is a growing concern about the impact of extreme weather events on ecosystems. In the Arctic, more frequent unseasonal warm spells and rain-on- snow events in winter cause changes in ...
    • Contrasting effects of summer and winter warming onbody mass explain population dynamics in a food-limitedArctic herbivore 

      Albon, Steve D.; Irvine, R. Justin; Halvorsen, Odd; Langvatn, Rolf; Loe, Leif Egil; Ropstad, Erik; Veiberg, Vebjørn; van der Wal, René; Bjørkvoll, Eirin Marie; Duff, Elizabeth I.; Hansen, Brage Bremset; Lee, Aline Magdalena; Tveraa, Torkild; Stien, Audun (Journal article; Peer reviewed, 2016)
      The cumulative effects of climate warming on herbivore vital rates and population dynamics are hard to predict, given that the expected effects differ between seasons. In the Arctic, warmer summers enhance plant growth ...
    • Demographic buffering of life histories? Implications of the choice of measurement scale 

      Bjørkvoll, Eirin Marie; Lee, Aline Magdalena; Grøtan, Vidar; Sæther, Bernt-Erik; Stien, Audun; Engen, Steinar; Albon, Steve D.; Loe, Leif Egil; Hansen, Brage Bremset (Journal article; Peer reviewed, 2016)
      Life-history theory predicts that the vital rates that influence population growth the most should be buffered against environmental fluctuations due to selection for reduced variation. However, it remains unclear whether ...
    • Effekter av tap av mor på lammets utvikling på utmarksbeite 

      Nornes, Regine (Master thesis, 2019)
      Tap av sau (Ovis aries) på beite til rovdyr har ført til store konflikter mellom sauenæringen og forvaltningen. Det er lite kunnskap rundt mekanismene som fører til tap. Tap av mor tidlig i beitesesongen kan føre til en ...
    • Keeping cool in the warming Arctic: thermoregulatory behaviour by Svalbard reindeer (Rangifer tarandus platyrhynchus) 

      Williamsen, Linda; Pigeon, Gabriel; Mysterud, Atle; Stien, Audun; Forchhammer, Mads C.; Loe, Leif Egil (Peer reviewed; Journal article, 2019)
      In animals with long generation times, evolution of physiological and morphological traits may not be fast enough to keep up with rapid climate warming, but thermoregulatory behaviour can possibly serve as an important ...
    • Kongeørn (Aquila chrysaetos) og sauehold : variasjon i tap til kongeørn på fylkes- og beiteområdenivå 

      Rønningen, Mikael Franzén (Master thesis, 2019)
      I Norge er konfliktene mellom beitenæringa og rovvilt den viktigste årsaken til at størrelsen på rovviltpopulasjonene holdes nede. På midten av 1900-tallet var populasjonene av de norske rovdyrene på sitt laveste, dette ...
    • Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic 

      Carlsson, Anja M.; Albon, Steve D.; Coulson, Stephen J.; Ropstad, Erik; Stien, Audun; Wilson, Kenneth; Loe, Leif Egil; Veiberg, Vebjørn; Irvine, Robert Justin (Journal article; Peer reviewed, 2018)
      1. Macroparasites have a central place in wildlife ecology because they have the potential to regulate host populations through effects on reproduction and/or survival. However, there remains a paucity of studies that have ...
    • Little impact of over-winter parasitism on a free-ranging ungulate in the high Arctic 

      Carlsson, Anja M.; Albon, Steve D.; Coulson, Stephen James; Ropstad, Erik; Stien, Audun; Wilson, Kenneth; Loe, Leif Egil; Veiberg, Vebjørn; Irvine, Robert Justin (Journal article; Peer reviewed, 2018)
      1. Macroparasites have a central place in wildlife ecology because they have the potential to regulate host populations through effects on reproduction and/or survival. However, there remains a paucity of studies that have ...
    • More frequent extreme climate events stabilize reindeer population dynamics 

      Hansen, Brage Bremset; Gamelon, Marlène; Albon, Steve D.; Lee, Aline Magdalena; Stien, Audun; Irvine, Robert Justin; Sæther, Bernt-Erik; Loe, Leif Egil; Ropstad, Erik; Veiberg, Vebjørn; Grøtan, Vidar (Journal article; Peer reviewed, 2019)
      Extreme climate events often cause population crashes but are difficult to account for in population-dynamic studies. Especially in long-lived animals, density dependence and demography may induce lagged impacts of ...
    • The influence of weather conditions during gestation on life histories in a wild Arctic ungulate 

      Douhard, Mathieu; Loe, Leif Egil; Stien, Audun; Bonenfant, Christophe; Irvine, R. Justin; Veiberg, Vebjørn; Ropstad, Erik; Albon, Steve D. (Journal article; Peer reviewed, 2016)
      The internal predictive adaptive response (internal PAR) hypothesis predicts that individuals born in poor conditions should start to reproduce earlier if they are likely to have reduced performance in later life. However, ...