FAUNA AND ECOLOGY OF TESTACEA FROM PINE FORESTSOF TOMSK AND KEMEROVO REGIONS

Some data concerning bio-diversity of Testacea from pine forests of Tomsk and Kemerovoregions are shown. The peculiarities of amoebae bio-diversity, distribution anddensity of populations depending on forest litter were studied. The list of amoebae consistingof 48 species and sub-species from 15 genera and 9 families are presented.It was shown that amoebae bio-diversity is more affected by soil micro-conditionsthan by regional peculiarities of pine forests. Approximately 65% of Testacea populationon the studied territory belong to three families: Centropyxidae (10 species), Euglyphidae(9 species), Trinematidae (12 species). The analysis of amoebae fauna showed thatrepresentatives of four species (Cyclopyxis eurystoma, Euglypha laevis, Trinema lineare,Trinema complanatum) were found in all soil samples. The density of amoebae in pineforests is rather high (10 to 90 thousand specimens in 1 g of dry soil); the density has nosignificant connection with the number of species. The maximum density and biodiversityof Testacea was registered in Tymirjasevo pine forests. The combination ofdominant species is stable and most of the species belong to the those common for thesoils. The composition of dominant species is rather similar and species common for thesoil are represented there.Two species - Trinema complanatum and Euglypha laevis dominate in Tymirjasevopine forests while Euglypha laevis is more abundant in Kireevsk and Inskoj forests. Themost favorable conditions for amoebae development are formed in pine forests whereprocesses of litter accumulation are more intensive and where there are no bush andherbal communities. Some eurybiontic and specific species (closely connected with theenvironmental conditions of moss litter) were marked.

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