1. Department of Hydrobiology; Adam Mickiewicz University; Poznań Poland
2. Faculty of Fisheries; Istanbul University; Laleli-Istanbul Turkey
3. IASMA Research and Innovation Centre; Fondazione Edmund Mach-Istituto Agrario di S. Michele all'Adige; Trento Italy
4. Department of Botany; Sofia University “St. Kliment Ohridski,”; Sofia Bulgaria
5. Kinneret Limnological Laboratory; Israel Oceanographic & Limnological Research; Migdal Israel