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Article
Jennifer Stien, Auteur ; Rolf A. Ims, AuteurHuman disturbance of nesting birds may cause reduced breeding success. It is therefore necessary to assess the impact of disturbance to identify steps that minimize negative impacts. We carried out a study of nesting success at two adjacent colo[...]
Article
Rolf A. Ims, Auteur ; John-Andre Henden, AuteurRapid, but contrasting, changes in the extent of erect thicket-forming shrubs is presently seen in the Arctic, either resulting from a warmer climate (increasing extent) or intensified herbivory (decreasing extent). We investigated the impact of[...]
Article
John-Andre Henden, Auteur ; Audun Stien, Auteur ; Bard-Jorgen Bardsen, Auteur ; Nigel G. Yoccoz, Auteur ; Rolf A. Ims, AuteurMesocarnivores 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[...]
Article
Siw T. Killengreen, Auteur ; Nicolas Lecomte, Auteur ; Dorothee Ehrich, Auteur ; Tino Schott, Auteur ; Nigel G. Yoccoz, Auteur ; Rolf A. Ims, Auteur1. Most studies addressing the causes of the recent increases and expansions of mesopredators in many ecosystems have focused on the top-down, releasing effect of extinctions of large apex predators. However, in the case of the northward expansi[...]
Article
Rolf Rodven, Auteur ; Inkeri Mannikko, Auteur ; Rolf A. Ims, Auteur ; Nigel G. Yoccoz, Auteur ; Ivar Folstad, AuteurIn reindeer, the variation in fur coloration is higher in semi-domesticated than in wild populations. This difference might result from impacts of natural enemies acting on conspicuously coloured individuals with higher intensity in natural than[...]
Article
John-Andre Henden, Auteur ; Nigel G. Yoccoz, Auteur ; Rolf A. Ims, Auteur ; Bard-Jorgen Bardsen, Auteur ; Anders Angerbjorn, AuteurPredator populations with demographic cycles driven by multi-annual cycles of their key prey resource can be expected to be "cyclic phase sensitive" to management actions. We explored this by means of modelling in the case of the highly endanger[...]
Article
Tino Schott, Auteur ; Snorre B. Hagen, Auteur ; Rolf A. Ims, Auteur ; Nigel G. Yoccoz, AuteurP>1. Larval parasitoids (i.e. parasitoids attacking host larvae) constitute a major source of mortality in many ecologically and economically important forest insects, but how this mortality affects spatio-temporal population dynamics is often n[...]
Article
Siw T. Killengreen, Auteur ; Rolf A. Ims, Auteur ; Nigel G. Yoccoz, Auteur ; Kari Anne Brathen, Auteur ; John-Andre Henden, Auteur ; Tino Schott, AuteurWe conducted a large-scale, campaign-based survey in Finnmark, northern Norway to evaluate the proposition that declining Arctic fox populations at the southern margin of the Arctic tundra biome result from fundamental changes in the state of th[...]
