• 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 (Journal article; Peer reviewed, 2021)
      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 ...
    • Foraging tactics in dynamic sea-ice habitats affect individual state in a long-ranging seabird 

      Tarroux, Arnaud; Cherel, Yves; Fauchald, Per; Kato, Akiko; Love, Oliver P.; Ropert-Coudert, Yan; Spreen, Gunnar; Varpe, Øystein; Weimerskirch, Henri; Yoccoz, Nigel; Zahn, Sandrine; Descamps, Sebastien (Journal article; Peer reviewed, 2020)
      1. Individual heterogeneity in diet and foraging behaviour is common in wild animal populations, and can be a strong determinant of how populations respond to environmental changes. Within populations, variation in foraging ...
    • In the dark: a review of ecosystem processes during the Arctic polar night 

      Berge, Jørgen; Renaud, Paul; Darnis, Gérald; Cottier, Finlo; Last, Kim; Gabrielsen, Tove M.; Johnsen, Geir; Seuthe, Lena; Weslawski, Jan Marcin; Leu, Eva; Moline, Mark A.; Nahrgang, Jasmine; Søreide, Janne; Varpe, Øystein; Lønne, Ole Jørgen; Daase, Malin; Falk-Petersen, Stig (Peer reviewed; Journal article, 2015-08-28)
      Several recent lines of evidence indicate that the polar night is key to understanding Arctic marine ecosystems. First, the polar night is not a period void of biological activity even though primary production is close ...
    • Sea-ice loss boosts visual search: fish foraging and changing pelagic interactions in polar oceans 

      Langbehn, Tom; Varpe, Øystein (Peer reviewed; Journal article, 2017-12)
      Light is a central driver of biological processes and systems. Receding sea ice changes the lightscape of high-latitude oceans and more light will penetrate into the sea. This affects bottom-up control through primary ...
    • Strengthening the evidence base for temperature-mediated phenological asynchrony and its impacts 

      Samplonius, Jelmer; Atkinson, Angus; Hassall, Christopher; Keogan, Katherine; Thackeray, Stephen J.; Assmann, Jakob J.; Burgess, Malcolm D.; Macphie, Kirsty H; Pearce-Higgins, James W.; Simmonds, Emily Grace; Johansson, Jacob; Varpe, Øystein; Weir, James C; Childs, Dylan Z.; Cole, Ella F.; Daunt, Francis; Hart, Tom; Lewis, Owen T.; Pettorelli, Nathalie; Sheldon, Ben C.; Phillimore, Albert B. (Journal article; Peer reviewed, 2021)
      Climate warming has caused the seasonal timing of many components of ecological food chains to advance. In the context of trophic interactions, the match–mismatch hypothesis postulates that differential shifts can lead to ...
    • Temperature-dependent egg production and egg hatching rates of small egg-carrying and broadcast-spawning copepods Oithona similis, Microsetella norvegica and Microcalanus pusillus 

      Barth-Jensen, Coralie Marie Christine; Koski, Marja; Varpe, Øystein; Glad, Peter; Wangensteen, Owen Simon; Præbel, Kim; Svensen, Camilla (Journal article; Peer reviewed, 2020)
      Reproductive rates of copepods are temperature-dependent, but poorly known for small copepods at low temperatures, hindering the predictions of population dynamics and secondary production in high-latitude ecosystems. We ...