Macro- and Microelement Water Composition of the Volga River Delta and Its Interannual Variability

摘要

Spatial variations of the chemical composition of the Volga River delta waters and its interannual variability were estimated on the basis of long-term data on the content of macro components, biogenic elements, and trace elements. It was shown that the significant transformation inside the delta is peculiar only to the biogenic element runoff, which is influenced by production—destruction processes, whereas the migration of the major ions and dissolved trace elements in the delta watersheds occurswithout any essential variations.