Goncharov O. Conditions of formation of primary production in reservoirs of north-west Black Sea region

On the basis of researches in 2000-2003 the characteristic of production and destruction, a hydrochemical regime and oxygen conditions of estuaries and la-goons of north-west Black Sea region in the modern period is given. Trends of change of the primary production and contents of nutrients and organic matter are revealed in comparison with the period intensive eutrophication and up to that time. The role of algae of different biotopes in formation of oxygen conditions of reservoirs is described. Ratio of the basic nutrients in water of estuaries and in a north-west part of Black sea are calculated. For calculations of specific production use parameter of a total surface of a population of microalgae. The part of estuaries in general primary production of the Ukrainian sector of a north-west part of the Black sea is appreciated. Influence of physic-geographical parameters of reservoirs on a level of primary production is deter-mined.