Abstract :
Seasonal variations of the phytoplankton community and the environmental factors affecting the seasonal change of phytoplankton composition in Lake Karamuk were studied at three stations, from March, 2009 to February, 2010. A total of 89 taxa belonging to Cyanobacteria, Myzozoa, Ochrophyta, Euglenozoa, Chlorophyta and Charophyta were identified in the phytoplankton of Lake Karamuk. Ochrophyta in winter, early spring and late autumn, Chlorophyta in spring, summer and autumn and Cyanobacteria in late spring and summer were dominant in terms of individual intensity. The species dominating commonly in eutrophic and hypertrophic lakes were determined in Lake Karamuk. Cyanobacterial blooms in the lake were observed in May, which is characteristic for eutrophic and hypertrophic lakes. The high electrical conductivity, alkaline pH, nutrient concentrations, low Secchi depth and dissolved oxygen concentrations in the lake were recorded. Physico-chemical analysis results indicate that the level of the lake trophic status was hypertrophic. It was observed that the discharge into Lake Karamuk of the organic waste of the Çay SEKA Pulp Factory which operated between the years 1979-2004 was still effective on phytoplankton community structure and trophic status of the lake.
NaturalLanguageKeyword :
Phytoplankton , seasonal change , physico , chemical features , trophic status , Lake Karamuk
