Blar i forfatter "Pokrovsky, Ivan G."

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    • Documenting lemming population change in the Arctic: Can we detect trends? 

      Ehrich, Dorothée; Schmidt, Niels M.; Gauthier, Gilles; Alisauskas, Ray; Angerbjörn, Anders; Clark, Karin; Ecke, Frauke; Eide, Nina E.; Framstad, Erik; Frandsen, Jay; Franke, Alastair; Gilg, Olivier; Giroux, Marie-Andrée; Henttonen, Heikki; Hörnfeldt, Birger; Ims, Rolf A.; Kataev, Gennadiy D.; Kharitonov, Sergey P.; Killengreen, Siw T.; Krebs, Charles J.; Lanctot, Richard B.; Lecomte, Nicolas; Menyushina, Irina E.; Morris, Douglas W.; Morrisson, Guy; Oksanen, Lauri; Oksanen, Tarja; Olofsson, Johan; Pokrovsky, Ivan G.; Yu, Igor; Reid, Donald; Roth, James D.; Saalfeld, Sarah T.; Samelius, Gustaf; Sittler, Benoit; Sleptsov, Sergey M.; Smith, Paul A.; Sokolov, Alekstandr A.; Sokolova, Natalya A.; Soloviev, Mikhail Y.; Solovyeva, Diana V. (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-07-22)
      Lemmings are a key component of tundra food webs and changes in their dynamics can affect the whole ecosystem. We present a comprehensive overview of lemming monitoring and research activities, and assess recent trends in lemming abundance across the circumpolar Arctic. Since 2000, lemmings have been monitored at 49 sites of which 38 are still active. The sites were not evenly distributed ...

    • 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 ...

    • 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. ...