TAXONOMIC COMPOSITION OF INVERTEBRATE IN SPRINGSOF BARANOVICHY DISTRICT AS AN INDICATOR OF THEIR ECOLOGICAL STATE

Abstract

In the article the taxonomic composition of invertebrates in 13 springs of Baranovichi district (Belarus) are
considered. In spring ecosystems 53 species of invertebrates of three types were recorded: Annelida (1), Mollusca (4)
and Arthropoda (48). Among arthropods, the basic part are insects (46). Insects are represented by seven orders. The largest number of species in spring fauna has been recorded from the orders Trichoptera (12) and Coleoptera (10).
For all springs, analysis of hydrochemical parameters (pH, electrical conductivity, total salt content, biochemical
oxygen demand (BOD5), water hardness, concentration of dissolved nitrates, chlorides and sulfates) has been carried
out and the ecological state, quality class and degree of pollution of water of the spring ecosystem determined
based on bioindication.
On the basis of hydrochemical indicators it is discovered that the water of the springs Tartaki, Tartaki-Katikhin,
Basiny Lesnoy, Dobry Bor, Murovanka-1, Lyavonavy Krynitsy-2, Sunglovshchina, Mshanka and Yasenets belong to
the category “clean”, and the category “relatively clean” — Lyavonavy krynitsy-1, Kuzevichi-Pridorozhny, Yaroshevo-
2 and Tiuntsy. According to the results of bioindication research based on the analysis of the taxonomic composition
of invertebrates, the Tartaki spring ecosystems has a good ecological state, the Tiuntsy spring has an unsatisfactory
ecological state, and the rest springs have a satisfactory ecological state.

Fig. 15. Table 3. Ref.: 18 titles.