Quantitative indices of microphytobenthos have been obtained on the basis of long-term studies. Dominant structures of communities, seasonal, inter-annual and zonal changes of abundance and biomass of microphytobenthos under different ecological conditions of Southern Baikal have been analyzed. It is caused by changes of species diversity of algae community structures as well as by environmental factors. Spring and summer rises of abundance and biomass of microphytobenthos with the prevalence of the summer one is characteristic of seasonal dynamics.
Keywords: microphytobenthos, ubandance, biomass, zonal distribution, Lake Baikal
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