1 Department of Ecology and Environmental Science, Faculty of Natural Sciences and Informatics, Constantine the Philosopher University in Nitra, Tr. A. Hlinku 1, SK-949 74, Nitra, Slovak Republic. ftulis@ukf.sk.
2 Department of Ecology and Environmental Science, Faculty of Natural Sciences and Informatics, Constantine the Philosopher University in Nitra, Tr. A. Hlinku 1, SK-949 74, Nitra, Slovak Republic.
3 State Nature Conservancy of SR, Administration of Protected Landscape Area Ponitrie, Samova 3, SK-949 01, Nitra, Slovak Republic.
4 Department of Ecology, Institute of Biology, Faculty of Sciences, University of Pécs, Ifjúság Útja 6, H-7624, Pécs, Hungary.