Abstract
Lake Velencei is a shallow lake with a fairly variable water quality due to the effect of the earlier basin reconstruction and external factors, such as the weather and the organic matter loading from the catchment areas. For studying the changes in sediment of Lake Velencei, MPN technique, based bacteriological investigations, as well as measurements of water chemical parameters were performed. Microbial communities of aerobic thiosulphate-oxidising, anaerobic phototrophic, and sulphate-reducing bacteria taking part in the sulphur cycle were monitored between 1993 and 2001. In the western part of the lake the bacteriological results and the chemical parameters verified the presence of sulphuretum. In the first low water period of the studies the quantity of the bacteria contributing to the sulphur cycle was low in the sediment. After the increase of the water level the distribution of these microbes became somewhat homogeneous in the sediment. However, the different sediment regions might be characterised with dissimilar MPN values of the studied bacterial communities.
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Reskóné, M.N., Borsodi, A.K. Long-term investigations on the changes of the MPN values of bacterial communities participating in the sulphur cycle in Lake Velencei, Hungary. Hydrobiologia 506, 715–720 (2003). https://doi.org/10.1023/B:HYDR.0000008592.94887.26
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DOI: https://doi.org/10.1023/B:HYDR.0000008592.94887.26