Authors
Kirsi Korhonen
Research Scientist, Natural Resources Institute Finland, Paavo Havaksen tie 3, FI-90014 University of Oulu,, Oulu, Finland
Ossi Kotavaara
Geography Research Unit, P.O.Box 3000, FI-90014 University of Oulu,, Oulu, Finland
Toivo Muilu
Natural Resources Institute Finland, Paavo Havaksen tie 3, FI-90014 University of Oulu,, Oulu, Finland
Jarmo Rusanen
Geography Research Unit, P.O.Box 3000, FI-90014 University of Oulu,, Oulu, Finland
