1. Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biology, University of Oslo, Blindern, Oslo, Norway
2. Norwegian Institute of Land Inventory (NIJOS), Raveien, Ås, Norway
3. Institute for Husbandry and Aquaculture, Norwegian University of Life Sciences, Ås, Norway
4. Museum of Natural History and Archeology, Section of Natural History, Norwegian University of Science and Technology, Trondheim, Norway