• Climate change and the increasing impact of polar bears on bird populations 

      Prop, Jouke; Aars, Jon; Bårdsen, Bård-Jørgen; Hanssen, Sveinn Are; Bech, Claus; Bourgeon, Sophie; Fouw, Jimmy de; Gabrielsen, Geir W.; Lang, Johannes; Noreen, Elin; Oudman, Thomas; Sittler, Benoit; Tombre, Ingunn; Wolters, Eva; Moe, Børge; Stempniewicz, Lech (Peer reviewed, 2015)
      The Arctic is becoming warmer at a high rate, and contractions in the extent of sea ice are currently changing the habitats of marine top-predators dependent on ice. Polar bears (Ursus maritimus) depend on sea ice for ...
    • Community-wide mesocarnivore response to partial ungulate migration 

      Henden, John-André; Stien, Audun; Bårdsen, Bård-Jørgen; Yoccoz, Nigel Gilles; Ims, Rolf Anker (Journal article, 2014)
      1. Mesocarnivores increase in number and geographic range in human-disturbed ecosystems with cascading negative impact on biodiversity. To mitigate such impacts, it is essential to identify the proximate causes of such ...
    • Community-wide mesocarnivore response to partial ungulate migration 

      Henden, John-André; Stien, Audun; Bårdsen, Bård-Jørgen; Yoccoz, Nigel Gilles; Ims, Rolf Anker (Journal article; Peer reviewed, 2014)
      1.Mesocarnivores increase in number and geographic range in human-disturbed ecosystems with cascading negative impact on biodiversity. To mitigate such impacts, it is essential to identify the proximate causes of such ...
    • Effekten av høsting på produksjon og lønnsomhet i reindriften 

      Bårdsen, Bård-Jørgen; Berglann, Helge; Stien, Audun; Tveraa, Torkild (NINA rapport;999, Research report, 2014)
      Bestander av store klovdyr som f.eks. rein Rangifer sp., er regulert og begrenset gjennom ne-gativ tetthetsavhengighet og tilfeldig variasjon i klimatiske forhold. Tetthetsavhengighet og kli-ma påvirker individer av ulike ...
    • Evolutionary responses to a changing climate: Implications for reindeer population viability 

      Bårdsen, Bård-Jørgen (Journal article; Peer reviewed, 2017)
      If we want to understand how climate change affects long-lived organisms, we must know how individuals allocate resources between current reproduction and survival. This trade-off is affected by expected environmental ...
    • Isbjørnens effekt på fugl i et arktisk klima i endring. Sluttrapport for Svalbards miljøvernfond 

      Moe, Børge; Prop, Jouke; Aars, Jon; Bårdsen, Bård-Jørgen; Hanssen, Sveinn Are; Bech, Claus; Bourgeon, Sophie; Fouw, Jimmy de; Gabrielsen, Geir Wing; Lang, Johannes; Noreen, Elin; Oudman, Thomas; Sittler, Benoit; Stempniewicz, Lech; Tombre, Ingunn; Wolters, Eva (NINA Rapport;1163, Research report, 2015)
      Arktis blir stadig varmere og utbredelsen av havis blir mindre. Det forandrer leveområdet til de mange artene som er avhengige av havis. Isbjørnen er avhengig av havis for å jakte på sel, og økende lengde på den isfrie ...
    • Multiple stressors: modeling the effect of pollution, climate, and predation on viability of a sub-arctic marine bird 

      Bårdsen, Bård-Jørgen; Hanssen, Sveinn Are; Bustnes, Jan Ove (Journal article; Peer reviewed, 2018)
      Negative effects of long-transported pollutants, such as many persistent organic pollutants (POPs), on seabirds and other top predators have been documented for decades. Yet, the concentrations, and hence, the negative ...
    • Smaller saami herding groups cooperate more in a public goods experiment 

      Thomas, Matthew Gwynfryn; Næss, Marius Warg; Bårdsen, Bård-Jørgen (Journal article; Peer reviewed, 2016)
      Group living often entails a balance between individual selfinterest and benefits to the group as a whole. Situations in which an individual’s vested interests conflict with collective interests are known as social ...
    • Temporal variation in circulating concentrations of organochlorine pollutants in a pelagic seabird breeding in the high arctic 

      Bustnes, Jan Ove; Bårdsen, Bård-Jørgen; Moe, Børge; Herzke, Dorte; Hanssen, Sveinn Are; Sagerup, Kjetil; Bech, Claus; Nordstad, Tore; Chastel, Olivier; Tartu, Sabrina; Gabrielsen, Geir W. (Journal article; Peer reviewed, 2017)
      The present study explored short-term temporal variations in circulating concentrations of 3 legacy organochlorines with different physicochemical properties (polychlorinated biphenyl 153 [PCB-153], p,p0-dichlorodiphenyl ...
    • The status and trends of seabirds breeding in Norway and Svalbard 

      Fauchald, Per; Anker-Nilssen, Tycho; Barrett, Robert; Bustnes, Jan Ove; Bårdsen, Bård-Jørgen; Christensen-Dalsgaard, Signe; Descamps, Sebastien; Engen, Sigrid; Erikstad, Kjell E; Hanssen, Sveinn Are; Lorentsen, Svein-Håkon; Moe, Børge; Reiertsen, Tone; Strøm, Hallvard; Systad, Geir Helge (NINA Rapport;1151, Research report, 2015)
      Fauchald P, Anker-Nilssen T, Barrett RT, Bustnes JO, Bårdsen B-J, Christensen-Dalsgaard S, Descamps S, Engen S, Erikstad KE, Hanssen SA, Lorentsen S-H, Moe B, Reiertsen TK, Strøm H, Systad GH (2015) The status and trends ...
    • Utbredelsen av sjøfugl i Norskehavet og Barentshavet 

      Fauchald, Per; Tveraa, Torkild; Bårdsen, Bård-Jørgen; Langeland, Knut (NINA Rapport;64, Research report, 2005)
      Fauchald, P., Tveraa, T., Bårdsen, B.-J. og Langeland, K. 2005. Utbredelse av sjøfugl i Norskehavet og Barentshavet. - NINA Rapport 64. 35 s.
    • Vurdering av konsekvenser for sjøfugl. Underlag til konsekvensutredningen for Johan Castberg 

      Hanssen, Sveinn Are; Bårdsen, Bård-Jørgen; Systad, Geir Helge (NINA Rapport;1364, Research report, 2017)
      Hanssen, S.A., Bårdsen, B.-J. & Systad, G.H. 2017. Vurdering av konsekvenser for sjøfugl. Underlag til konsekvensutredningen for Johan Castberg - NINA Rapport 1364. 58 s. Johan Castberg er et fellesnavn for petroleumsfunnene ...