Seasonal changes in epipelic diatom and ionic composition of a karstic lake, Todurge, in central Anatolia, Turkey

The seasonal variations of epipelic diatoms and ionic composition in Tödürge Lake, the largest karstic lake of Anatolia, were investigated from October 2000 to October 2001. A total of 92 taxa belonging to 29 genera were identified. In all station, Amphora, Achnanthidium, Cymbella, Gomphonema and Mastogloia genera were dominant. Amphora commutata, Achnanthidium minutissimum, Cymbella affinis, Cyclotella comensis, Cocconeis placentula var. euglypta, Gomphonema olivaceum, Mastogloia smithii, Mastogloia braunii, Cymbella sinuata, Cymbella silesiaca and Cymbella naviculaformis were identified. The seasonal distribution of diatoms were affected by sulphate (311 mg L -1) and calcium (489 mg L-1) concentration. © 2007 Asian Network for Scientific Information.