1. Balaton Limnological Institute, Centre for Ecological Research; Hungarian Academy of Sciences; Tihany Hungary
2. Department of Limnology; University of Pannonia; Veszprém Hungary
3. Department of Aquaculture; Szent István University; Gödöllő Hungary
4. Danube Research Institute; Centre for Ecological Research; Göd Hungary
5. Department of Water Protection and Management; West-Transdanubian Water Directorate; Keszthely Hungary
6. Department of Chemistry and Environmental Sciences; University of West Hungary; Szombathely Hungary