1 Department of Hydrobiology, Faculty of Science and Technology, University of Debrecen, H-4032 Debrecen, Hungary, szanyi.kalman@science.unideb.hu.
2 Juhász-Nagy Pál Doctoral School of Biology and Environmental Sciences, University of Debrecen, H-4032 Debrecen, Hungary.
3 For the Nature- and Environmental Protection - PAPILIO (NGO), UA-89463 Velyka Dobron', Ukraine.
4 Institute of Plant Protection, Faculty of Agricultural and Food Sciences and Environmental Management, University of Debrecen, H-4032 Debrecen, Hungary.