ASSESSMENT OF THE ECOLOGICAL STATE OF THE MAIN STREAMS IN KAZANSKOYE DISTRICT (THE ISHIM RIVER BASIN)
The results of study of the ecological status of water ecotypes of the Ishim River tributaries in the Kazanka region, derived from the study of the data on the species composition and fitoindication values of gidromacrofits ​​in relation to such environmental factors as trophicity, saprobity, salinity, hardness and active reaction are given.