Blar i Artikkel - fagfellevurdert vitenskapelig / Articles - peer-reviewed på forfatter "Johnsen, Kaja"
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Hjortens trekkmønster skaper forvaltningsutfordringer i Hedmark
Zimmermann, Barbara; Wedul, Sari J.; Johnsen, Kaja; Strømseth, Thomas H.; Østerhus, Benedicte (Chapter; Peer reviewed, 2014)Jaktstatistikken fra Hedmark fylke tilsier at hjorten er tilbake for godt i Hedmark og befinner seg i en sterk vekstfase. Med det følger mange forvaltningsutfordringer. Vi har studert hjortens forflytningsmønster ... -
Phase- and season-dependent changes in social behaviour in cyclic vole populations
Johnsen, Kaja; Devineau, Olivier; Andreassen, Harry Peter (Peer reviewed; Journal article, 2019) -
Population cycles and outbreaks of small rodents: ten essential questions we still need to solve
Andreassen, Harry Peter; Sundell, Janne; Ecke, Fraucke; Halle, Stefan; Haapakoski, Marko; Henttonen, Heikki; Huitu, Otso; Jacob, Jens; Johnsen, Kaja; Koskela, Esa; Luque‑Larena, Juan Jose; Lecomte, Nicolas; Leirs, Herwig; Mariën, Joachim; Neby, Magne; Rätti, Osmo; Sievert, Thorbjörn; Singleton, Grant R.; Cann, Joannes van; Vanden Broecke, Bram; Ylönen, Hannu (Peer reviewed; Journal article, 2021)Most small rodent populations in the world have fascinating population dynamics. In the northern hemisphere, voles and lemmings tend to show population cycles with regular fuctuations in numbers. In the southern hemisphere, ... -
Seasonality shapes the amplitude of vole population dynamics rather than generalist predators
Andreassen, Harry Peter; Johnsen, Kaja; Joncour, Barbara; Neby, Magne; Odden, Morten (Peer reviewed; Journal article, 2019) -
Surviving winter: Food, but not habitat structure, prevents crashes in cyclic vole populations
Johnsen, Kaja; Boonstra, Rudy; Boutin, Stan; Devineau, Olivier; Krebs, Charles J.; Andreassen, Harry Peter (Journal article; Peer reviewed, 2016)Vole population cycles are a major force driving boreal ecosystem dynamics in north - western Eurasia. However, our understanding of the impact of winter on these cycles is ... -
The effects of winter climate and intrinsic factors on survival of cyclic vole populations in southeastern Norway
Johnsen, Kaja; Devineau, Olivier; Andreassen, Harry Peter (Peer reviewed; Journal article, 2018)