POPULATION-STRUCTURE AND DYNAMICS OF INFU SORIA (CILIOPHORA) IN THE TURIEC RIVER (SLOVAKIA)

In the years 1987-1988 population structure and dynamics of infusoria (Ciliophora) were investigated in the Turiec River. The river is still preserving its original nature well. Three types of substrata (swamp- detritus, platns, rocks) were studied. Two peaks of abundance and biom ass (spring and autumn) were found during the year. Infusoria substrat um plants were most abundant, both in abundance and biomass of these t hree substrata examined. High numbers were recorded also on rocks. In the Turiec River 148 species of infusoria were found. Some 43 % of the m were bacterivorous, 41 % were omnivorous and predatory species less than 17 %.