1. Institute of Nature Conservation Polish Academy of Sciences, 31-120 Kraków, Poland.
2. Museum and Institute of Zoology, Polish Academy of Sciences, 00-679 Warszawa, Poland.
3. Department of Natural Sciences, Mid Sweden University, SE-851 70 Sundsvall, Sweden.
4. Department of Wildlife, Fish, and Environmental Studies, Swedish University of Agricultural Sciences, SE-901 83 Umeå, Sweden.
5. Centre for Econics and Ecosystem Management, Eberswalde University for Sustainable Development, 16-225 Eberswalde, Germany.