THE ROLE OF CILIATES COMMUNITIES IN EVALUATING THE DEGREE OF SAPROBITY OF THE PARALITORAL ROMANIAN LAKES SIUTGHIOL AND TABACARIE

Ciliates lives in specific communities and are useful bioindicators by river, lakes and waste water. Our researches about ciliates of marine and lake ecosystems began in 1997 and continues today. Since 1997, 140 species have been identified in the sediments of paralitoral lakes and Danube Delta 's lakes (DUMITRACHE ? KERKMANN , 2004? 2006). In the last 20 years the lakes Tabacarie and Siutghiol have been subjected to strong anthropogenic influences. The ciliates were studied in live and protargol impregnated specimens were photographed and were subjected to biometric measurements.