macrophytes) is observed. Among plankton algae, for example, one species 

 of diatoms - Melosira granulata - dominates. It comprises 80% of the total 

 amount of algae. Macrophytes are represented by a community of water-marsh 

 plants, which verifies the fact that the river mouth is silting in. Thus, 

 the water in the mouth of the Moscow River in the vicinity of Kolomna 

 according to hydrobiological indices is characterized mainly as slightly 

 polluted. 



In conclusion, it should be noted that the research carried out proves 

 the necessity to apply a combination of water quality control methods 

 according to hydrobiological indices which provide information not only on 

 water pollution, but also on the state of aquatic organisms in water bodies 

 which are valuable from the point of view of fisheries. 



35 



