University of Eastern Finland School of Forest Sciences P.O. Box 111 80101 Joensuu Finland;
University of Eastern Finland School of Forest Sciences P.O. Box 111 80101 Joensuu Finland;
Natural Resources Institute Finland Bioeconomy and Environment P.O. Box 68 80100 Joensuu Finland;
University of Eastern Finland School of Forest Sciences P.O. Box 111 80101 Joensuu Finland;