The plankton composition of Lake Mogan in Central Anatolia

Abstract

Abstract The trophic status of Lake Mogan a shallow, alluvial lake in Central Anatolia, was assessed during a nine-month survey in 1994, including community structure and seasonal distribution of planktonic organisms. Bacillariophyta were dominant among the phytoplankton, followed by Chlorophyta, Cyanophyta, Cryptophyta, Euglenophyta and Dinophyta. Among the zooplankton, Arctodiaptomus bacillifer, Diaphanosoma lacustris and Keratella quadrata were the dominant species. Rotifers were most abundant in spring, Cladocera in summer and copepods in autumn. A rapid increase in zooplankton density correlated with a rise in temperature of 8°C and an increase in the chlorophyll concentration during summer. A total of 21 species of Rotifera, 6 species of Cladocera and 2 species of Copepoda have been identified, in addition to 90 species (from 8 genera) of phytoplanktonic organisms.