Determination of Kovada Lake water quality according to zooplankton

Abstract

In this study, between June 2012 and May 2013, zooplankton was sampled seasonally from 4 stations in Kovada Lake and various physicochemicals were measured. In our study, 23 species of Rotifera, 6 species of Claodocera and 3 species of Copepoda, total 32 species were identified. The highest zooplankton density in Kovada Lake was 243353,2 org/m3 in summer season and the lowest was 62132,8 org/m3 in winter season. According to Saprobi and WZI indices, the lake was found to be in mesotrophic water quality. However, the fact that zooplankton species such as K.cochlearis, P.vulgaris from Rotifera, D.longspina, B.longirostris from Cladocera, which are indicators of eutrophic waters, are dominant and frequent species for Kovada Lake is an indication that the trophic level of the lake is going towards eutrophic structure when evaluated in terms of zooplankton.