Влияние техногенного загрязнения воды из некоторых озёр города Тюмени на показатели жизнедеятельности дафний, инфузорий, водорослей и бактерий

Abstract

В данной работе проведено исследование на дафниях (Daphnia magna Straus), инфузориях (Paramecium caudatum Ehrenberg), хлорелле (Chlorella vulgaris Beijer) и люминесцентных бактериях тест-системы «Эколюм».

Research on daphnia (Daphnia magna Straus), infusoria (Paramecium caudatum Ehrenberg), chlorella (Chlorella vulgaris Beijer) and luminescent bacteria of the «Ecolum» test system, as well as the analysis of chemical substances in water samples were conducted in laboratory conditions. Water samples from Alebashevo, Krugloe and Andreevskoe lakes have a toxic effect on daphnia, which is manifested by a decrease in their survival, fecundity and motor activity. On chlorella, undiluted water samples from lakes have an acute toxic effect, which is manifested by a decrease in the optical density of the culture. Water samples from Alebashevo and Krugloe lakes have toxic effects on luminescent bacteria, water samples from Pesjanoye and Andreevskoye lakes do not have toxic effects. Water samples from the lakes have a toxic effect on infusoria, which is manifested in a sharp increase or decrease in their numbers, reduction of motor activity and chemotaxis. According to the results of chemical analysis of water samples there were exceedances of MPC values for COD, BOD5, petroleum products, nitrate ions, nitrite ions, phosphate ions, hardness, iron, surfactant-A and sulfate ions.