Blar i forfatter "Sokolov, Aleksandr A."

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    • Breeding den selection by Arctic foxes (Vulpes lagopus) in southern Yamal Peninsula, Russia 

      Hofhuis, Stijn; Ehrich, Dorothee; Sokolova, Natalia A.; van Hooft, Pim; Sokolov, Aleksandr A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-11-02)
      Selecting the right location for a den during the breeding season is a type of habitat selection in the Arctic fox (Vulpes lagopus) that is likely to affect its reproductive success. A den’s suitability likely depends on its ability to provide shelter, as well as its proximity to prey resources. Depending on the different relative risks that Arctic foxes may face across their broad circumpolar range, ...

    • 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) ...

    • Emergent rainy winter warm spells may promote boreal predator expansion into the arctic 

      Sokolov, Aleksandr A.; Sokolova, Natalya A.; Ims, Rolf Anker; Brucker, Ludovic; Ehrich, Dorothee (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-06-06)
      Climate change has been characterized as the most serious threat to Arctic biodiversity. In addition to gradual changes such as climate warming, extreme weather events, such as melting temperatures in winter and rain on snow, can have profound consequences for ecosystems. Rain-on-snow events lead to the formation of ice layers in the snow pack, which can restrict access to forage plants and cause ...

    • Harmonizing circumpolar monitoring of Arctic fox: benefits, opportunities, challenges and recommendations 

      Berteaux, Dominique; Thierry, Anne-Mathilde; Alisauskas, Ray; Angerbjörn, Anders; Buchel, Eric; Doronina, Liliya; Ehrich, Dorothee; Eide, Nina Elisabeth; Erlandsson, Rasmus; Flagstad, Øystein; Fuglei, Eva; Gilg, Olivier; Golstman, Mikhail; Henttonen, Heikki; Ims, Rolf Anker; Killengreen, Siw Turid; Kondratyev, Alexander V.; Kruchenkova, Elena; Kruckenberg, Helmut; Kulikova, Olga; Landa, Arild Magne; Lang, Johannes; Menyushina, Irina; Mikhnevich, Julia; Niemimaa, Jukka; Norén, Karin; Ollila, Tuomo; Ovsyanikov, Nikita; Pokrovskaya, Liya; Pokrovsky, Ivan G.; Rodnikova, Anna Y.; Roth, James D.; Sabard, Brigitte; Samelius, Gustaf; Schmidt, Niels-Martin; Sittler, Benoit; Sokolov, Aleksandr A.; Sokolova, Natalya A.; Stickney, Alice; Unnsteinsdóttir, Ester Rut; White, Paula A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-16)
      The biodiversity working group of the Arctic Council has developed pan-Arctic biodiversity monitoring plans to improve our ability to detect, understand and report on long-term change in Arctic biodiversity. The Arctic fox (Vulpes lagopus) was identified as a target of future monitoring because of its circumpolar distribution, ecological importance and reliance on Arctic ecosystems. We provide ...

    • Homage to Hersteinsson and Macdonald: climate warming and resource subsidies cause red fox range expansion and Arctic fox decline 

      Elmhagen, Bodil; Berteaux, Dominique; Burgess, Robert. M.; Ehrich, Dorothee; Gallant, Daniel; Henttonen, Heikki; Ims, Rolf Anker; Killengreen, Siw Turid; Niemimaa, Jukka; Norén, Karin; Ollila, Tuomo; Rodnikova, Anna Y.; Sokolov, Aleksandr A.; Sokolova, Natasha A.; Stickney, Alice A.; Angerbjörn, Anders (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-16)
      Climate change can have a marked effect on the distribution and abundance of some species, as well as their interspecific interactions. In 1992, before ecological effects of anthropogenic climate change had developed into a topical research field, Hersteinsson and Macdonald published a seminal paper hypothesizing that the northern distribution limit of the red fox (Vulpes vulpes) is determined ...

    • Snowmobile impact on diurnal behaviour in the Arctic fox 

      Fuglei, Eva; Ehrich, Dorothee; Killengreen, Siw Turid; Rodnikova, Anna Y.; Sokolov, Aleksandr A.; Pedersen, Åshild Ønvik (Journal article; Tidsskriftartikkel; Peer reviewed, 2017-08-16)
      As tourism increases globally, studies have documented impacts on wildlife from anthropogenic disturbances. In this observational experiment we aimed to investigate if snowmobile traffic affected the diurnal activity of Arctic fox in High Arctic Svalbard. We conducted the study in two areas in Svalbard, one control area with low snowmobile traffic and one experimental area with high snowmobile ...

    • 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, ...