| Summary: | Communities of ground beetles are good indicators of environment change. It is connected with the fact that the majority of ground-beetles species, are anyway connected with the soil and are very sensitive to conditions of aeration and moistening, changes of the salt mode. Therefore it is important, before completion of the hydroelectric power station cascade construction on the Western Dvina River, to study specific structure of ground-beetles of the river valley and to establish the degree such constructions can affect the biodiversity and change the settled communities of soil organisms. The aim is to reveal the species composition and structure of the dominance of ground-beetles (Coleoptera: Carabidae) in the Western Dvina River valley within the Belarusian Lakeland. Material and methods. The material was gathered with the use of a standard entomological method – Barber’s traps. The basis of traps is plastic glasses of 0,5 l. Glasses were filled with the fixing liquid (9% solution of acetic acid) by 1/4. Researches mentioned 15 biotopes in 3 stationars: in Verkhnedvinsk, Polotsk and Vitebsk Districts on river banks of the Western Dvina. Soil traps were checked from July to November, 2014. After removal of traps material was processed in stationary conditions. The received results were brought to electronic databases, for further statistical processing. Finding and their discussion. As a result of the research in 2014 on the Western Dvina, 4 719 specimens of ground-beetles of 91 species relating to 37 genus were collected. The greatest number of species was noted in the genus of Bembidion (19), Agonum (10), Pterostichus (1); the genus of Carabus (5), Amara (4), Harpalus (4) conceded to them by quantity of species, Share of other genus is insignificant. In the analysis of structure of domination in 15 biotopes 24 dominant species was revealed. Common species of dominant for all studied biotopes were not revealed. Reliable distinctions of specific structure and number of ground-beetles species of eastern and ...
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