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Eddy covariance fluxes of carbon dioxide and methane from the Herring River in Wellfleet, MA (ver 2.0, June 2022)


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Sanders-DeMott, R., Eagle, M.J., Kroeger, K.D., Wang, F., Brooks, T.W., O'Keefe Suttles, J.A., Nick, S.K., Mann, A.G., and Tang, J. 2022, Carbon dioxide and methane fluxes with supporting environmental data from coastal wetlands across Cape Cod, Massachusetts (ver 2.0, June 2022): U.S. Geological Survey data release,


Saline tidal wetlands are important sites of carbon sequestration and produce negligible methane (CH4) emissions due to regular inundation with sulfate-rich seawater. Yet, widespread management of coastal hydrology has restricted vast areas of coastal wetlands to tidal exchange. These ecosystems often undergo impoundment and freshening, which in turn cause vegetation shifts like invasion by Phragmites, that affect ecosystem carbon balance. Understanding controls of carbon exchange in these understudied ecosystems is critical for informing climate consequences of blue carbon restoration and/or management interventions. Here we present measurements of net ecosystem exchange of carbon dioxide (CO2) and methane, along with ancillary meteorological [...]


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“Photograph of a Phragmites wetland in the Herring River estuary in Wellfleet, MA”
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“Hourly data on flux of CO2, CH4, and associated meteorological parameters. v2”
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Eddy covariance measurements of net ecosystem exchange of carbon dioxide and methane were collected continuously at half-hourly intervals to assess the magnitude and drivers of carbon exchange in an impounded coastal wetland. Data were also collected to inform predictive models of carbon fluxes across coastal wetlands of varying salinity and to facilitate National Park Service restoration planning and future blue carbon project assessments.

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