Blar i forfatter "Pokrovsky, Ivan"

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    • The importance of willow thickets for ptarmigan and hares in shrub tundra : the more the better? 

      Ehrich, Dorothee; Henden, John-André; Ims, Rolf Anker; Doronina, Lilyia O; Killengreen, Siw Turid; Lecomte, Nicolas; Pokrovsky, Ivan; Skogstad, Gunhild; Sokolov, Alexander A.; Sokolov, Vasily A.; Yoccoz, Nigel (Journal article; Tidsskriftartikkel; Peer reviewed, 2012)

    • Rough-legged buzzards, arctic foxes and red foxes in a tundra ecosystem without rodents 

      Pokrovsky, Ivan; Ehrich, Dorothee; Ims, Rolf Anker; Kondratyev, Alexander V.; Kruckenberg, Helmut; Kulikova, Olga; Mihnevich, Julia; Shienok, Alexander (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-02-18)
      Small rodents with multi-annual population cycles strongly influence the dynamics of food webs, and in particular predator-prey interactions, across most of the tundra biome. Rodents are however absent from some arctic islands, and studies on performance of arctic predators under such circumstances may be very instructive since rodent cycles have been predicted to collapse in a warming Arctic. ...