1. M.G. Kholodny Institute of Botany; National Academy Science of Ukraine; Kyiv 01601 Ukraine
2. Experimental Phycology and Culture Collection of Algae; University of Göttingen; D-37073 Göttingen Germany
3. Department of Applied Ecology and Phycology; University of Rostock; D-18059 Rostock Germany
4. Department of Limnology and Biooceanography; University of Vienna; A-1090 Vienna Austria
5. Department of Botany; Universidad de Concepción; Concepción Chile