1. Department of Agricultural Sciences University of Helsinki Helsinki Finland
2. Department of Biological and Environmental Science University of Jyväskylä Jyväskylä Finland
3. Department of Conservation Biology Institute for Ecology, Evolution and Diversity, Goethe University Frankfurt Frankfurt Germany
4. Bavarian Forest National Park Grafenau Germany
5. Morten Chr. Consult Sorø Denmark
6. Centre for Macroecology, Evolution and Climate University of Copenhagen Copenhagen Denmark