Methanogenesis and organic matter destruction in bottom sediments of technogenic water bodies |
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Authors: | A. N. Dzyuban |
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Affiliation: | 1. Papanin Institute for Biology of Inland Waters, Russian Academy of Sciences, Borok, Nekouzskii district, Yaroslavl oblast, 152742, Russia
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Abstract: | Traits have been revealed in the microbial processes of methane formation and organic matter destruction in bottom sediments of technogenic water bodies, in which at the abundance of Corg compounds, including toxic, dissolved oxygen deficiency, and low redox potential, organic matter decay in sediments is mostly anaerobic with the predominance of methanogenesis and sulfate reduction. Data on major microbial processes are used to calculate the total sludge destruction; it is maximal in the sediments of low-toxicity technogenic water bodies; organic matter destruction in them is mostly due to methanogenesis; it is minimal in high-toxicity water bodies, the share of sulfate reduction in them increases, and that of methanogenesis decreases. |
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