Determination of zooplankton fauna and seasonal changes of Keban Dam lake Yurtbaşi Region, Hazar Lake and Dedeyolu Pond

In this study it was aimed to determinate zooplankton fauna and its seasonal variations in Keban Dam Lake Yurtbaşı region, Hazar Lake and Dedeyolu Pond. Zooplankton samples have been collected monthly periods between May 2011 – April 2012 . During the study, 29 species belong to Rotifera, 9 to Cladocera and 2 to Copepoda from Keban Dam Lake Yurtbası Region. 32 species belong to Rotifera , 10 to Cladocera and 2 to Copepoda from Hazar Lake, 17 species belong to Rotifera , 6 to Cladocera and 2 Copepoda were identified from Dedeyolu Pond As a result of Shannon Wiener species richness index analysis of Keban Dam Lake Yurtbası Region, species richness was found highest in may (H′=2.72) and the least index value was found in february (H′=0.91). In Hazar Lake, species richness was found highest in may (H′=2.33) and the least index value was found in december (H'=0.61).In Dedeyolu Pond, species richness was found highest in april (H'=2.33) and the least index value was found in december (H′=0.68). According to Margalef index analysis of Keban Dam Lake Yurtbası Region, species richness was found highest in may (D=3.86) and the least value was found in january (D=0.62). In Hazar Lake, species richness was found highest in may (D=3.94) and the least value was found in february (D=0.58) In Dedeyolu Pond, species richness was found highest in may (D=3.82) and the least index value was found in february (D=0.68). Among all zooplankton, Rotifera was represented with 81%, Cladocera 14% and Copepoda 5%.