Blar i forfatter "Krebs, Charles J."

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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 ...

    • Why do the boreal forest ecosystems of Northwestern Europe differ from those of Western North America? 

      Boonstra, Rudy; Andreassen, Harry Peter; Boutin, Stan; Husek, Jan; Ims, Rolf Anker; Krebs, Charles J.; Skarpe, Christina; Wabakken, Petter (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-07-20)
      The boreal forest is one of the largest terrestrial biomes on Earth. Conifers normally dominate the tree layer across the biome, but other aspects of ecosystem structure and dynamics vary geographically. The cause of the conspicuous differences in the understory vegetation and the herbivore–predator cycles between northwestern Europe and western North America presents an enigma. Ericaceous dwarf ...