Blar i Institutt for biologi på forfatter "Ims, Rolf Anker"

Viser treff 1-6 av 6

    • Anti-parasite treatment and blood biochemistry in raptor nestlings 

      Hanssen, Sveinn Are; Sonne, Christian; Bustnes, Jan Ove; Schnug, Lisbeth; Bourgeon, Sophie; Ballesteros, Manuel; Eulaers, Igor; Moum, Truls Borg; Johnsen, Trond Vidar; Kjelgaard-Hansen, Mads; Herzke, Dorte; Jaspers, Veerle; Covaci, Adrian; Eens, Marcel; Halley, Duncan John; Erikstad, Kjell Einar; Ims, Rolf Anker (Journal article; Peer reviewed, 2017)
      We investigated the effects of parasite removal on various blood clinical–chemical variables (BCCVs). BCCVs are indicators of health, reflecting, e.g., homeostasis of liver, kidney function, and bone metabolism. The study ...

    • Antiparasite treatments reduce humoral immunity and impact oxidative status in raptor nestlings 

      Hanssen, Sveinn Are; Bustnes, Jan Ove; Schnug, Lisbeth; Bourgeon, Sophie; Johnsen, Trond Vidar; Ballesteros, Manuel; Sonne, Christian; Herzke, Dorte; Eulaers, Igor; Jaspers, Veerle; Covaci, Adrian; Eens, Marcel; Halley, Duncan John; Moum, Truls Borg; Ims, Rolf Anker; Erikstad, Kjell E (Journal article; Peer reviewed, 2013)
      Parasites are natural stressors that may have multiple negative effects on their host as they usurp energy and nutrients and may lead to costly immune responses that may cause oxidative stress. At early stages, animals ...

    • Bearded seal (Erignathus barbatus) vocalizations across seasons and habitat types in Svalbard, Norway 

      Llobet, Samuel M.; Ahonen, Heidi; Lydersen, Christian; Berge, Jørgen; Ims, Rolf Anker; Kovacs, Kit M. (Peer reviewed; Journal article, 2021)
      Male bearded seals (Erignathus barbatus) use vocal displays to attract females and to compete with other males during the mating season. This makes it possible to monitor breeding populations of this species using passive ...

    • Climate Events Synchronize the Dynamics of a Resident Vertebrate Community in the High Arctic 

      Hansen, Brage Bremset; Grøtan, Vidar; Aanes, Ronny; Sæther, Bernt-Erik; Stien, Audun; Fuglei, Eva; Ims, Rolf Anker; Yoccoz, Nigel; Pedersen, Åshild Ønvik (Journal article; Peer reviewed, 2013)
      Recently accumulated evidence has documented a climate impact on the demography and dynamics of single species, yet the impact at the community level is poorly understood. Here, we show that in Svalbard in the high Arctic, ...

    • Predator co-occurrence in alpine and Arctic tundra in relation to fluctuating prey 

      Rød-Eriksen, Lars; Killengreen, Siw Turid; Ehrich, Dorothee; Ims, Rolf Anker; Herfindal, Ivar; Landa, Arild; Eide, Nina Elisabeth (Peer reviewed; Journal article, 2022)
      1. Large carnivores influence ecosystem dynamics in multiple ways, for example, by suppressing meso-carnivores and providing carrions for smaller scavengers. Loss of large carnivores is suggested to cause meso-carnivore ...

    • Sustainable management of populations impacted by harvesting and climate change 

      Stenseth, Nils Christian; Ims, Rolf Anker; Sæther, Bernt-Erik; Cadahia, Luis; Herfindal, Ivar; Lee, Aline Magdalena; Whittington, Jason D; Yoccoz, Nigel (Peer reviewed; Journal article, 2022)
      The sustainable use of natural resources is critical for addressing the global challenges of today. Strategies for sustainable harvesting need to consider not only harvested species, but also other non-harvested species ...