1. Institute of Biology, Biotechnology and Environmental Protection, Faculty of Natural Sciences , University of Silesia in Katowice , Jagiellońska Str. 28, 40-032 Katowice , Poland
2. Department of Botany, Institute of Environmental Biology , University of Wrocław , Kanonia Str. 6/8, 50-328 Wrocław , Poland
3. Alter eco Foundation, Nowowiejska Str. 1/3/24, 00-643 Warszawa , Poland
4. Institute of Nature Conservation, Polish Academy of Sciences , Adam Mickiewicz avenue. 33, 31-120 Kraków , Poland