Institution: | (1) Faculty of Biosciences, University of Joensuu, P.O. Box 111, 80101 Joensuu, Finland;(2) Department of Biology, University of Oulu, P.O. Box 3000, 90014 Oulu, Finland;(3) Faculty of Forest Sciences, University of Joensuu, P.O. Box 111, 80101 Joensuu, Finland |