ANDREAS BALLOT*, LOTHAR KRIENITZ, KIPLAGAT KOTUT, CLAUDIA WIEGAND, JAMES S. METCALF, GEOFFREY A. CODD AND STEPHAN PFLUGMACHER LEIBNIZ-INSTITUTE OF FRESHWATER ECOLOGY AND INLAND FISHERIES, DEPARTMENT OF LIMNOLOGY OF STRATIFIED LAKES, ALTE FISCHERHÜTTE 2, D-16775 STECHLIN, GERMANY, KENYATTA UNIVERSITY, BOTANY DEPARTMENT, PO BOX 43844, NAIROBI, KENYA, 2 LEIBNIZ-INSTITUTE OF FRESHWATER ECOLOGY AND ...
