Institution: | 1. Department of Biology, University of Oulu, Oulu, Finland;2. Earthy Matters Environmental Consultants, Co. Donegal, Ireland;3. The Finnish Forest Research Institute, Joensuu, Finland;4. Institute for Environmental Sciences, University of Koblenz‐Landau, Landau, Germany;5. School of Forest Sciences, University of Eastern Finland, Joensuu, Finland |