A case report: algal Bloom of Microcystis aeruginosa in a dirinking-water body, Eğirdir Lake, Turkey

Özet

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.