Search for: [Abstract = "A characteristics is given of water chemistry in 41 lakes differing in their trophic state and mixis \(di\-and polymictic\). Increasing trophic state of the lakes under study was accompanied by changes in the concent ration of the following chemical components of water\: an increase in the summer and spring content of total phosphorus and of its mineral and organic form, of total and organic nitrogen, an increase in the concentration of ammonia in spring, a summer increase of content of ammonia nearthe bottom in dimictic lakes, a growth of the content of calcium, sodium, potassium and bicarbonates, as well as an increase of oxidability and electrolytic conductivity of water in both mictic types and the layers studied, and a growth of the content of magnesium in dimictic lakes."]

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