1. Department of Botany and Zoology, Masaryk University, Kotlářská 2, 611 37 Brno, Czech Republic;
2. Institute of Vertebrate Biology, Academy of Sciences of the Czech Republic, v.v.i., Květná 8, 603 65 Brno, Czech Republic
3. Institute of Forest Ecology, Slovak Academy of Sciences, Štúrova 2, 960 53 Zvolen, Slovakia