Authors
Aneta Sikora
Wrocław, Poland
Karkonoski National Park, Jelenia Góra, Poland
Tadeusz E. Pawlikowski
Nicolaus Copernicus University, Faculty of Biology and Environment Protection, Toruń, Poland
Marcin Sikora
Wrocław, Poland
Centrum Nauki Keplera - Centrum Przyrodnicze, Zielona Góra, Poland