• The context of an emerging predation problem: Nenets reindeer herders and Arctic foxes in Yamal 

      Terekhina, Alexandra; Volkovitskiy, Alexander; Sokolova, Natalya A.; Ehrich, Dorothee; Fufachev, Ivan A.; Sokolov, Aleksandr A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-05-12)
      Human-wildlife problems often arise when predators kill livestock. This can develop into serious conflicts between traditional pastoralists and other stakeholders, such as government officials and conservationists. In the Yamal Peninsula (Russia), nearly half of the indigenous Nenets people are reindeer herders. They have recently faced many challenges, such as high mortality of reindeer from pasture ...
    • Dental evidence for variation in diet over time and space in the Arctic fox, Vulpes lagopus 

      Ungar, Peter S.; Van Valkenburgh, Blaire; Peterson, Alexandria S.; Sokolov, Aleksandr A.; Sokolova, Natalya A.; Ehrich, Dorothee; Fufachev, Ivan A.; Gilg, Olivier; Terekhina, Alexandra; Volkovitskiy, Alexander; Shtro, Victor (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-02-16)
      Studies of the effects of variation in resource availability are important for understanding the ecology of high-latitude mammals. This paper examines the potential of dental evidence (tooth wear and breakage) as a proxy for diet and food choice in Vulpes lagopus, the Arctic fox. It presents a preliminary study of dental microwear, gross wear score, and tooth breakage in a sample (n = 78 individuals) ...
    • Flexibility in a changing arctic food web: Can rough-legged buzzards cope with changing small rodent communities? 

      Fufachev, Ivan A.; Ehrich, Dorothee; Sokolova, Natalia; Sokolov, Vasiliy A; Sokolov, Aleksandr A (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-08-07)
      Indirect effects of climate change are often mediated by trophic interactions and consequences for individual species depend on how they are tied into the local food web. Here we show how the response of demographic rates of an arctic bird of prey to fluctuations in small rodent abundance changed when small rodent community composition and dynamics changed, possibly under the effect of climate ...
    • Nest association between two predators as a behavioral response to the low density of rodents 

      Pokrovsky, Ivan G.; Ehrich, Dorothee; Fufachev, Ivan A.; Ims, Rolf Anker; Kulikova, Olga; Sokolov, Aleksandr; Sokolova, Natalia; Sokolov, Vasiliy; Yoccoz, Nigel (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-11-04)
      Many birds nest in association with aggressive birds of other species to benefit from their protection against predators. We hypothesized that the protective effect also could extend to foraging resources, whereby the resultant resource-enriched habitats near a nest of aggressive raptors could be an alternative cause of associations between nesting bird species with non-overlapping foraging niches. ...