Oxygen priming induced by elevated CO2 reduces carbon accumulation and methane emissions in coastal wetlands, 2017-2020, Maryland.

This dataset accompanies the published paper Noyce et al. (2023) in Nature Geosciences. The data are from the first four years of a field manipulation of whole-ecosystem warming and elevated CO2 experiment (SMARTX) in the Smithsonian's Global Change Research Wetland (GCReW), a brackish, microtidal wetland site on a subestuary of the Chesapeake Bay. These data were generated to understand how warming and elevated CO2 interact to structure ecosystem-level responses to global change, particularly in terms of carbon sequestration. The dataset covers 2017-2020 and includes surface elevation, soil redox potential, methane (CH4) emissions, porewater CH4, root biomass, and stem density for each experimental plot. Metadata are provided in the Read Me file.