Assessment of Zooplankton Community Structure of the Bahir Dar Gulf of Lake Tana, Ethiopia

The zooplankton composition of the Bahir Dar gulf of Lake Tana was studied in June and July, 2007. A total of forty four zooplankton species made up of 16 species of rotifers, 16 species of cladocerans and 12 species of copepods and their developing stages were recorded in the following order of dominance; Rotifera > Cladocera > Cylopoida > Calanoida. The number of species was not too different among the three sampling Stations, however, average zooplankton abundance, was significantly higher (