Browsing Brage IMR by Author "Varpe, Øystein"

Now showing items 1-8 of 8

    • A standard protocol for describing the evaluation of ecological models 

      Planque, Benjamin; Aarflot, Johanna Myrseth; Buttay, Lucie; Carroll, JoLynn; Fransner, Sara Filippa Krusmynta; Hansen, Cecilie; Husson, Berengere; Langangen, Øystein Ole Gahr; Lindstrøm, Ulf Ove; Pedersen, Torstein; Primicerio, Raul; Sivel, Elliot Manuarii; Skogen, Morten D.; Strombom, Evelyn; Stige, Leif Christian; Varpe, Øystein; Yoccoz, Nigel (Peer reviewed; Journal article, 2022)
      Numerical models o ecological systems are increasingly used to address complex environmental and resource management questions. One challenge or scientists, managers, and stakeholders is to appraise how well suited these ...

    • At-sea distribution and prey selection of Antarctic petrels and commercial fisheries 

      Descamps, Sebastien; Tarroux, Arnaud; Cherel, Yves; Delord, Karine; Godø, Olav Rune; Kato, Akiko; Krafft, Bjørn Arne; Lorentsen, Svein-Håkon; Ropert-Coudert, Yan; Skaret, Georg; Varpe, Øystein (CCAMLR;WG-EMM-16/P15, Conference object, 2016)

    • At-Sea Distribution and Prey Selection of Antarctic Petrels and Commercial Krill Fisheries 

      Descamps, Sebastien; Tarroux, Arnaud; Cherel, Yves; Delord, Karine; Godø, Olav Rune; Kato, Akiko; Krafft, Bjørn Arne; Lorentsen, Svein-Håkon; Ropert-Coudert, Yan; Skaret, Georg; Varpe, Øystein (Journal article; Peer reviewed, 2016-08-17)
      Commercial fisheries may impact marine ecosystems and affect populations of predators like seabirds. In the Southern Ocean, there is an extensive fishery for Antarctic krill Euphausia superba that is projected to increase ...

    • Eight decades of adaptive changes in herring reproductive investment: the joint effect of environment and exploitation 

      Claireaux, Marion; dos Santos Schmidt, Thassya Christina; Olsen, Esben Moland; Slotte, Aril; Varpe, Øystein; Heino, Mikko Petteri; Enberg, Katja (Peer reviewed; Journal article, 2020)
      Reproductive investment is a central trait for population dynamics and productivity. Fishing and environmental variations are major drivers affecting population structure, dynamics, and adaptation of life-history and ...

    • Evolution of growth in Gulf of St Lawrence cod? 

      Heino, Mikko; Baulier, Loïc; Boukal, David S.; Dunlop, Erin S.; Eliassen, Sigrunn; Enberg, Katja; Jørgensen, Christian; Varpe, Øystein (Journal article; Peer reviewed, 2008-06-22)
      Fishing is often size selective such that the likelihood of capture increases with body size. It has therefore been postulated that fishing could favour evolution of slower growth because smaller size would reduce exposure ...

    • Getting fat in a hurry: food consumption during the feeding migration of NSS herring 

      Varpe, Øystein; Fiksen, Øyvind; Slotte, Aril (ICES CM Documents;2004/K:64, Working paper, 2004)
      The Norwegian spring-spawning (NSS) herring Clupea harengus inhabits a seasonal environment where food is abundant only during a short period of the year. During that period NSS herring store energy for metabolic ...

    • A standard protocol for describing the evaluation of ecological models 

      Planque, Benjamin; Aarflot, Johanna Myrseth; Buttay, Lucie; Carroll, JoLynn; Fransner, Sara Filippa Krusmynta; Hansen, Cecilie; Husson, Berengere; Langangen, Øystein Ole Gahr; Lindstrøm, Ulf Ove; Pedersen, Torstein; Primicerio, Raul; Sivel, Elliot Manuarii; Skogen, Morten D.; Strombom, Evelyn; Stige, Leif Christian; Varpe, Øystein; Yoccoz, Nigel (Peer reviewed; Journal article, 2022)
      Numerical models of ecological systems are increasingly used to address complex environmental and resource management questions. One challenge for scientists, managers, and stakeholders is to appraise how well suited these ...

    • Visual predation risk and spatial distributions of large Arctic copepods along gradients of sea ice and bottom depth 

      Langbehn, Tom; Aarflot, Johanna Myrseth; Freer, Jennifer J.; Varpe, Øystein (Peer reviewed; Journal article, 2023)
      Changes in the community size structure of Arctic copepods toward smaller and less fat individuals or species have been linked to environmental changes. The underpinning mechanisms are, however, poorly understood. We use ...