Eğirdir Lake is one of the largest lakes of Turkey. It has provided some of drinking-water poverty of Isparta since 1994. 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 was identified in our investigation but M. aeruginosa determined as the bloom-forming species. M. aeruginosa were counted 16.530 colony/ L and Chlorophyll-a concentration was measured as 117 g 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 oC. 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.

Eğirdir Lake is one of the largest lakes of Turkey. It has provided some of drinking-water poverty of Isparta since 1994. 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 was identified in our investigation but M. aeruginosa determined as the bloom-forming species. M. aeruginosa were counted 16.530 colony/ L and Chlorophyll-a concentration was measured as 117 g 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 oC. 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.