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Turkish Journal of Fisheries and Aquatic Sciences 2008, Vol 8, Num, 1     (Pages: 177-179)

A Case Report: Algal Bloom of Microcystis aeruginosa in a Drinking-Water Body, Eğirdir Lake, Turkey

Haşim Sömek 1 ,Mustafa Ruşen Ustaoğlu 1 ,Meral Yağci 2

1 Ege University, Faculty of Fisheries, Department of Hydrobiology, 35100, İzmir, Turkey
2 Eğirdir Fisheries Research Institute, 32500 Eğirdir, Isparta, Turkey
Viewed : 1994 - Downloaded : 1185 Eğirdir Lake is one of the largest lakes of Turkey. It has provided some of drinking-water for Isparta since 1994 due to the problem of water shortage. A few successive blooms were firstly observed in the western shores of Eğirdir Lake during the summer and autumn of 2006. The blooms were seen as a bluegreen jelly or band in shores of the lake. M. aeruginosa and M. flos-aqua were identified in our investigation but M. aeruginosa was determined as the bloom-forming species. M. aeruginosa was counted as 16,530 colony/L and Chlorophyll-a concentration was measured as 117 μg L-1 in our investigation. In this respect, we can say that Eğirdir Lake is under the potential risk of cyanobacterial toxicity. Surface water temperature was recorded as 24.2°C. Orthophosphate-P (PO4-P) and inorganic nitrogen (NO2-N, NO3-N and NH4-N) concentrations were not detected from the sampling station. Details of the other environmental parameters are given in the text. Keywords : Eğirdir Lake, drinking-water, cyanobacterial bloom, Microcystis aeruginosa