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Contemporary Problems of Ecology

2004 year, number 2

Bacterial Reduction of Sulphates in the Bottom Sediments of South Baikal

E. A. SOKOLOVA

Abstract

The number and activity of sulphate-reducing bacteria, the amount of sulphides and sulphates in the bottom sediments of lake Baikal are presented. The number of sulphate-reducing bacteria ranged from 100 to 15000 cells per 1g of wet sediment, the rate of sulphate reduction - from 0.1 to 3.4 mkg S x kg-1.24-1, the amount of sulphides - from 0 to 44.7 mg S per 1 kg. The research results demonstrate that anthropogenic pollution of water causes an increase in the activity of sulphate-reducing bacteria and degradation of water quality of Baikal lake.