Browsing by Author "Olofsson, Johan"

Now showing items 1-4 of 4

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

      Ehrich, Dorothee; Schmidt, Niels M.; Gauthier, Gilles; Alisauskas, Ray; Angerbjörn, Anders; Clark, Karin; Ecke, Frauke; Eide, Nina Elisabeth; Framstad, Erik; Frandsen, Jay; Franke, Alastair; Gilg, Olivier; Giroux, Marie-Andrée; Henttonen, Heikki; Hörnfeldt, Birger; Ims, Rolf Anker; Kataev, Gennadiy D.; Kharitonov, Sergey P.; Killengreen, Siw Turid; Krebs, Charles J.; Lanctot, Richard B.; Lecomte, Nicolas; Menyushina, Irina; Morris, Douglas W.; Morrisson, Guy; Oksanen, Lauri; Oksanen, Tarja Maarit; Olofsson, Johan; Pokrovsky, Ivan G.; Popov, Igor Yu.; Reid, Don; Roth, James D.; Saalfeld, Sarah T.; Samelius, Gustaf; Sittler, Benoit; Sleptsov, Sergey M.; Smith, Paul; Sokolov, Aleksandr A.; Sokolova, Natalya A.; Soloviev, Mikhail Y.; Solovyeva, Diana (Journal article; Peer reviewed, 2019)
      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 ...

    • Ecosystem change and stability over multiple decades in the Swedish subarctic: complex processes and multiple drivers 

      Callaghan, Terry V.; Jonasson, Christer; Thierfelder, Tomas; Yang, Zhenlin; Hedenås, Henrik; Johansson, Margareta; Molau, Ulf; Van Bogaert, Rik; Michelsen, Anders; Olofsson, Johan; Gwynn-Jones, Dylan; Bokhorst, Stef; Phoenix, Gareth K.; Bjerke, Jarle Werner; Tømmervik, Hans; Christensen, Torben R.; Hanna, Edward; Koller, Eva K.; Sloan, Victoria L. (Journal article; Peer reviewed, 2013)
      The subarctic environment of northernmost Sweden has changed over the past century, particularly elements of climate and cryosphere. This paper presents a unique geo-referenced record of environmental and ecosystem ...

    • Vole and lemming activity observed from space 

      Olofsson, Johan; Tømmervik, Hans; Callaghan, T.V. (Journal article; Peer reviewed, 2012)
      Predicting the impacts of present global warming requires an understanding of the factors controlling plant biomass and production. The extent to which they are controlled by bottom-up drivers such as climate, nutrient and ...

    • Where do the treeless tundra areas of northern highlands fit in the global biome system: toward an ecologically natural subdivision of the tundra biome 

      Virtanen, Risto; Oksanen, Lauri Kalervo; Oksanen, Tarja Maarit; Cohen, Juval; Forbes, Bruce C.; Johansen, Bernt; Käyhkö, Jukka; Olofsson, Johan; Pulliainen, Jouni; Tømmervik, Hans (Peer reviewed, 2015)
      According to some treatises, arctic and alpine sub-biomes are ecologically similar, whereas others find them highly dissimilar. Most peculiarly, large areas of northern tundra highlands fall outside of the two recent ...