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Salt Marshes Biogeochemistry

Salt marshes, which exist at the boundary between the terrestrial and marine environments, are highly productive coastal wetlands that serve a critical role in carbon sequestration and nutrient trapping. In the East Anglian (UK) salt marsh sediments, we find overall two broad sediment chemistries: iron-rich sediment, which is characterized by high ferrous iron concentration (up to 2mM) and sulfide-rich sediment, which is characterized by high sulfide concentrations (up to 8 mM) and high methane concentrations.

Publications:

Mills J., Antler G., Turchyn A.V. (2016)  Geochemical evidence for cryptic sulfur cycling in salt marsh sediments, Earth and Planetary Science Letters 453,  23-32 doi: 10.1016/j.epsl.2016.08.001 

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