Biogeosciences
Biogeosciences
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Articles | Volume 23, issue 20
Articles | Volume 23, issue 20
https://doi.org/10.5194/bg-23-7577-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-23-7577-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 23, issue 20
Research article
 | 
28 Oct 2026
Research article |  | 28 Oct 2026

Liquid polymer enhances methanogenesis and restructures prokaryotic communities in freshwater sediments

Alexander Feckler, Eric Bollinger, Alexandra Unik, Peter Mueller, Sabine Filker, Christian Plicht, Zacharias Steinmetz, and Mirco Bundschuh

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Short summary
Synthetic water-soluble plastics are widely used, yet their effects on lake and river sediments remain unclear. We investigated polyvinylpyrrolidone by exposing freshwater sediments and monitoring methane production and microbial communities for 56 d under oxygen-free conditions. The plastic caused earlier and greater methane release and shifted bacterial populations, particularly those feeding methane producers.
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