Authors
Aleksey Fedorkov
Institute of Biology, Komi Science Centre, Russian Academy of Sciences, Syktyvkar, Russia
Lars-Göran Stener
Lars-Goran.Stener@skogforsk.se
The Forestry Research Institute of Sweden (Skogforsk), Svalöv, Sweden
Pertti Pulkkinen
Natural Resources Institute Finland (Luke), Helsinki, Finland