• Author: Callaghan, Terry V.

  • Author: Tweedie, Craig E.

    Department of Biology, The University of Texas at El Paso

  • Author: Åkerman, Jonas

    Royal Swedish Academy of Sciences

  • Author: Andrews, Christopher

    Centre for Ecology & Hydrology

  • Author: Bergstedt, Johan

    Linköping University

  • Author: Butler, Malcolm G.

    Department of Biological Sciences, North Dakota State University

  • Author: Christensen, Torben R.

    Lund University

  • Author: Cooley, Dorothy

    Department of Environment, Yukon Territorial Government

  • Author: Dahlberg, Ulrika

    Lantmäteriet

  • Author: Danby, Ryan K.

    Department of Geography and School of Environmental Studies, Queen’s University

  • Author: Daniёls, Fred J. A.

    Institute of Biology and Biotechnology of Plants

  • Author: Molenaar, Johannes G. de

  • Author: Dick, Jan

    Centre for Ecology & Hydrology

  • Author: Mortensen, Christian Ebbe

    Ejbyvej 13 2740 Skovlunde Denmark

  • Author: Ebert-May, Diane

    Michigan State University

  • Author: Emanuelsson, Urban

    Swedish Biodiversity Centre

  • Author: Eriksson, Håkan

    Umeå University

  • Author: Hedenås, Henrik

    Abisko Scientific Research Station

  • Author: Henry, Greg. H. R.

    University of British Columbia

  • Author: Hik, David S.

    University of Alberta

  • Author: Hobbie, John E.

    The Ecosystems Center, Marine Biological Laboratory

  • Author: Jantze, Elin J.

    Stockholm University

  • Author: Jaspers, Cornelia

    Section for Ocean Ecology and Climate, National Institute of Aquatic Resources, Technical University of Denmark, Charlottenlund Slot, Jægersborg Alle 1, 2920, Charlottenlund, Denmark

  • Author: Johansson, Cecilia

    Uppsala University

  • Author: Johansson, Margareta

    Lund University

  • Author: Johnson, David R.

    Department of Biology, The University of Texas at El Paso

  • Author: Johnstone, Jill F.

    University of Saskatchewan

  • Author: Jonasson, Christer

    Abisko Scientific Research Station

  • Author: Kennedy, Catherine

    Department of Environment, Yukon Territorial Government

  • Author: Kenney, Alice J.

    University of British Columbia

  • Author: Keuper, Frida

    Vrije Universiteit Amsterdam

  • Author: Koh, Saewan

    University of Alberta

  • Author: Krebs, Charles J.

    University of British Columbia

  • Author: Lantuit, Hugues

    Alfred Wegener Institute

  • Author: Lara, Mark J.

    Department of Biology, The University of Texas at El Paso

  • Author: Lin, David

    Department of Biology, The University of Texas at El Paso

  • Author: Lougheed, Vanessa L.

    Department of Biology, The University of Texas at El Paso

  • Author: Madsen, Jesper

    Aarhus University

  • Author: Matveyeva, Nadya

    Department of Vegetation of the Far North, Komarov Botanical Institute

  • Author: McEwen, Daniel C.

    Department of Biosciences, Minnesota State University Moorhead

  • Author: Myers-Smith, Isla H.

    University of Alberta

  • Author: Narozhniy, Yuriy K.

    Tomsk State University

  • Author: Olsson, Håkan

    Lund University

  • Author: Pohjola, Veijo A.

    Uppsala University

  • Author: Price, Larry W.

    Department of Geography, Portland State University

  • Author: Rigét, Frank

    Department of Biosciences, Minnesota State University Moorhead

  • Author: Rundqvist, Sara

    Umeå University

  • Author: Sandström, Anneli

    Kaplansgatan 13 80230 Gävle Sweden

  • Author: Tamstorf, Mikkel

    Department of Biosciences, Minnesota State University Moorhead

  • Author: Bogaert, Rik Van

    Flanders Research Foundation

  • Author: Villarreal, Sandra

    Department of Biology, The University of Texas at El Paso

  • Author: Webber, Patrick J.

  • Author: Zemtsov, Valeriy A.

    Tomsk State University

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Understanding the responses of tundra systems to global change has global implications. Most tundra regions lack sustained environmental monitoring and one of the only ways to document multi-decadal change is to resample historic research sites. The International Polar Year (IPY) provided a unique opportunity for such research through the Back to the Future (BTF) project (IPY project #512). This article synthesizes the results from 13 papers within this Ambio Special Issue. Abiotic changes include glacial recession in the Altai Mountains, Russia; increased snow depth and hardness, permafrost warming, and increased growing season length in sub-arctic Sweden; drying of ponds in Greenland; increased nutrient availability in Alaskan tundra ponds, and warming at most locations studied. Biotic changes ranged from relatively minor plant community change at two sites in Greenland to moderate change in the Yukon, and to dramatic increases in shrub and tree density on Herschel Island, and in sub-arctic Sweden. The population of geese tripled at one site in northeast Greenland where biomass in non-grazed plots doubled. A model parameterized using results from a BTF study forecasts substantial declines in all snowbeds and increases in shrub tundra on Niwot Ridge, Colorado over the next century. In general, results support and provide improved capacities for validating experimental manipulation, remote sensing, and modeling studies.
Original languageEnglish
JournalAmbio
Publication date2011
Volume40
Issue6
Pages705-716
ISSN0044-7447
DOIs
StatePublished
CitationsWeb of Science® Times Cited: 30
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