The zooplankton species taken to the laboratory were first examined in general under an inverted microscope and then the species were diagnosed under a DM-LS Type 020–518–500 microscope. For diagnosis, Koste (1978), Nogrady and Pourriot (1995), Segers (1995), de Smet (1996), de Smet and Pourriot (1997), and Simirnov (1996) were referenced. Temperature was measured with a YSI 51 model oxygen meter; pH was measured with a WTW340-A/SET pH meter, dissolved oxygen with an SI 51 oxygen meter, and EC with a WTW LF 92 conductivity meter.