Sulfur cycling likely obscures dynamic biologically‐driven iron redox cycling in contemporary methane seep environments
Isabel R. Baker,
Peter R. Girguis
Abstract:Deep‐sea methane seeps are amongst the most biologically productive environments on Earth and are often characterised by stable, low oxygen concentrations and microbial communities that couple the anaerobic oxidation of methane to sulfate reduction or iron reduction in the underlying sediment. At these sites, ferrous iron (Fe2+) can be produced by organoclastic iron reduction, methanotrophic‐coupled iron reduction, or through the abiotic reduction by sulfide produced by the abundant sulfate‐reducing bacteria a… Show more
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