Marsh soil net greenhouse gas fluxes and explanatory variables collected from marshes in Terrebonne Bay, Louisiana from April 2015 to November 2016

We conducted seasonal (April, June, August, October 2015 and May, June, September, November 2016) measurements of net soil greenhouse gas (CO2, CH4, and N2O) fluxes at four locations (5, 10, 15, and 20m from the marsh edge) in four marsh sites in Terrebonne Bay, Louisiana. These sites include paired oiled and unoiled marshes in the Bay LaFleur and northern Lake Barre regions of Terrebonne Bay. Additionally, we collected 5-cm deep soil cores at the same 4 locations for a series of basic site characterizations: soil properties, soil extractable nutrients, porewater, overlying water and adjacent bay water depth, temperature, salinity, specific conductance and nutrients, when available. This dataset is a continuation of dataset R1.x139.143:0025 (2012) and dataset R1.x139.143:0027 (2013-2014).