• 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 ...
    • Circadian rhythmicity persists through the Polar night and midnight sun in Svalbard reindeer 

      Arnold, Walter; Ruf, Thomas; Loe, Leif Egil; Irvine, R. Justin; Ropstad, Erik; Veiberg, Vebjørn; Albon, Steve D. (Journal article; Peer reviewed, 2018)
    • Circadian rhythmicity persists through the Polar night and midnight sun in Svalbard reindeer 

      Arnold, Walter; Ruf, Thomas; Loe, Leif Egil; Irvine, R. Justin; Ropstad, Erik; Veiberg, Vebjørn; Albon, Steve D. (Journal article; Peer reviewed, 2018)
      Studies of locomotor activity in Svalbard reindeer reported the temporary absence of diel rhythms under Arctic photic conditions. However, using Lomb-Scargle periodogram analyses with high statistical power we found diel ...
    • 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 ...
    • Hjortevilt 2012–2014 : Framdriftsrapportfra Overvåkingsprogrammet for hjortevilt 

      Solberg, Erling Johan; Strand, Olav; Veiberg, Vebjørn; Andersen, Roy; Heim, Morten; Rolandsen, Christer Moe; Solem, May I.; Holmstrøm, Frode; Jordhøy, Per; Nilsen, Erlend Birkeland; Granhus, Aksel; Eriksen, Rune (Research report, 2015)
      Dette er en framdriftsrapport fra Overvåkingsprogrammet for hjortevilt etter de tre første årene i kontraktsperioden 2012–2017. I rapporten gir vi en oversikt og kvalitetsvurdering av data innsamlet i årene 2012–2014 og ...
    • 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 ...
    • Sea ice loss increases genetic isolation in a high Arctic ungulate metapopulation 

      Peeters, Bart; Le Moullec, Mathilde; Raeymaekers, Joost A. M.; Fredricson Marquez, Jonatan; Røed, Knut; Pedersen, Åshild Ønvik; Veiberg, Vebjørn; Loe, Leif Egil; Hansen, Brage Bremset (Peer reviewed; Journal article, 2019)
      Sea ice loss may have dramatic consequences for population connectivity, extinction–colonization dynamics, and even the persistence of Arctic species subject to climate change. This is of particular concern in face of ...
    • Silver spoon effects are constrained under extreme adult environmental conditions 

      Pigeon, Gabriel; Loe, Leif Egil; Bischof, Richard; Bonenfant, Christophe; Forchhammer, Mads C.; Irvine, R. Justin; Ropstad, Erik; Stien, Audun; Veiberg, Vebjørn; Albon, Steve (Peer reviewed; Journal article, 2019)
      Early-life environmental conditions may generate cohort differences in individual fitness, subsequently affecting population growth rates. Three, nonmutually exclusive hypotheses predict the nature of these fitness ...
    • Spatial mismatch between management units and movement ecology of a partially migratory ungulate 

      Meisingset, Erling L.; Loe, Leif Egil; Brekkum, Øystein; Bischof, Richard; Rivrud, Inger Maren; Lande, Unni Støbet; Zimmermann, Barbara; Veiberg, Vebjørn; Mysterud, Atle (Journal article; Peer reviewed, 2017)
    • Spatiotemporal patterns of rain-on-snow and basal ice in high Arctic Svalbard: detection of a climate-cryosphere regime shift 

      Peeters, Bart; Pedersen, Åshild Ønvik; Loe, Leif Egil; Isaksen, Ketil; Veiberg, Vebjørn; Stien, Audun; Kohler, Jack; Gallet, Jean-Charles; Aanes, Ronny; Hansen, Brage Bremset (Peer reviewed; Journal article, 2019)
      Spatiotemporal patterns of rain-on-snow and basal ice in high Arctic Svalbard: detection of a climate-cryosphere regime shift
    • 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, ...