Blar i forfatter "Shtro, Victor"

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    • 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) ...

    • Red fox takeover of arctic fox breeding den : an observation from Yamal Peninsula, Russia 

      Rodnikova, Anna; Ims, Rolf Anker; Sokolov, Alexander; Skogstad, Gunhild; Sokolov, Vasily; Shtro, Victor; Fuglei, Eva (Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
      Here, we report from the first direct observation of a red fox (Vulpes vulpes) intrusion on an arctic fox (Vulpes lagopus) breeding den from the southern Arctic tundra of Yamal Peninsula, Russia in 2007. At the same time, as a current range retraction of the original inhabitant of the circumpolar tundra zone the arctic fox is going on, the red fox is expanding their range from the south into arctic ...

    • Vole abundance and reindeer carcasses determine breeding activity of Arctic foxes in low Arctic Yamal, Russia 

      Ehrich, Dorothee; Cerezo, Maite; Rodnikova, Anna Y.; Sokolova, Natalya A.; Fuglei, Eva; Shtro, Victor; Sokolov, Aleksandr A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-09-16)
      High latitude ecosystems are at present changing rapidly under the influence of climate warming, and specialized Arctic species at the southern margin of the Arctic may be particularly affected. The Arctic fox (Vulpes lagopus), a small mammalian predator endemic to northern tundra areas, is able to exploit different resources in the context of varying tundra ecosystems. Although generally widespread, ...