J. H. Christensen is at the Meteorological and Oceanographic Research Division, Danish Meteorological Institute, Lyngbyvej 100, DK-2100 Copenhagen, Denmark, email: jhc@dmi.dk
Finland
M. Eronen is at the Department of Geology, University of Helsinki, P. O. Box 11, 00014 Helsinki, Finland, email: matti.eronen@helsinki.fi
T. Järvikoski is at the Department of Behavioral Sciences, University of Oulu, P. O. Box 222, 90571 Oulu, Finland, email: tjarviko@ktk.oulu.fi
P. Kuhry (coordinator) is at the Arctic Centre, University of Lapland, P. O. Box 122, 96101 Rovaniemi, Finland, email: pkuhry@levi.urova.fi
P. J. Martikainen is at the Department of Environmental Sciences, University of Kuopio, P. O. Box 95, 70701 Kuopio, Finland, email: pertti.martikainen@ktl.fi
A. Nikula is at the Finnish Forest Research Institute, P. O. Box 16, 96301 Rovaniemi, Finland, email: ari.nikula@metla.fi
Russia
V. Beznosikov is at the Department of Soil Science, Institute of Biology, Komi Science Centre, Kommunisticheskaya Street 28, Syktyvkar 167610, Russia, email: beznosikov@ib.ksc.komi.ru
I. Lavrinenko is at the Laboratory of Tundra Protection, Institute of Biology, Komi Science Centre, Kommunisticheskaya Street 28, Syktyvkar 167610, Russia, email: lavrinenko@ib.ksc.komi.ru
A. Taskaev is at the Institute of Biology, Komi Science Centre, Kommunisticheskaya Street 28, Syktyvkar 167610, Russia, email: taskaev@ib.ksc.komi.ru
The Netherlands
E. A. Koster is at the Department of Physical Geography, Utrecht University, P. O. Box 80115, 3508 TC Utrecht, the Netherlands, email: e.koster@frw.ruu.nl
J. Vandenberghe is at the Faculty of Earth Sciences, Free University Amsterdam, De Boelelaan 1085, 1081 HV Amsterdam, the Netherlands, email: vanj@geo.vu.nl
The United Kingdom
P. D. Crittenden is at the School of Biological Sciences, University of Nottingham, University Park, Nottingham NG7 2RD, England, email: peter.crittenden@nottingham.ac.uk
T. Ingold is at the Department of Social Anthropology, University of Manchester, Oxford Road, Manchester M13 9PL, England, email: tim.ingold@man.ac.uk
V. J. Jones is at the Environmental Change Research Centre, Department of Geography, University College London, 26 Bedford Way, London WC1H 0AP, England, email: vjones@geog.ucl.ac.uk