Effect of regulated stream flow on riverside mollusk groupings structure

O. Garbar1, V. Kyrychuk2, G. Kyrychuk1

1Ivan Franko Zhytomyr State University
40, V. Berdychivska St., Zhytomyr 10008, Ukraine
2Bogomolets National Medical University
13, T. Shevchenko Blvd., Kyiv 01601, Ukraine

The Teteriv is a right-bank tributary of the Dnieper, and a typical European river. A number of its water basins and ponds slow down the stream and affect the species composition of the water ecosystems. Mollusks are known to meet a set of bioindicator species requirements. This item seeks to provide a research into the way the regulated stream flow of the Teteriv effects the species composition and mollusk populations of the riverside. Molluscs have been sampled from 5 river zones. Determined have been the mollusk groupings domination/diversity as well as dissimilarities between certain biocenoses in terms of the Teteriv river stream flow regulation extent, which enables to prognosticate mollusk grouping structural modifications in other European rivers with controlled river flows.

Keywords: regulated stream flow, structure malacocenoses, indicators domination/diversity, species diversity

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