1. Polish Academy of Sciences; Mammal Research Institute; ul. Waszkiewicza 1; Białowieża; 17-230; Poland
2. University of Oldenburg; Oldenburg; 26111; Germany
3. Department of Forest Ecosystems and Society; Oregon State University; Corvallis; OR; 97333; USA
4. Department of Biosciences; Centre for Ecological and Evolutionary Synthesis; University of Oslo; P.O. Box 1066 Blindern; Oslo; 0316; Norway
5. Imperial College London; Silwood Park Campus Buckhurst Road; Ascot; Berkshire; SL5 7PY; UK