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The Mississippi River Deltaic Plain has extensive marsh habitats (fresh, intermediate, brackish, and saline) where soil cores were collected to a depth of 100 cm at 24 sites to assess long-term carbon accumulation rates and coast-wide burial rates. Each core was sectioned into 2-cm depth intervals, and select intervals were analyzed for percent moisture, bulk density, total carbon, and radionuclide (137Cs and 210Pb).
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Short-term carbon accumulation rates were examined by collecting 10-cm deep soil cores at 24 sites located in marshes spanning the salinity gradient in coastal Louisiana. Percent moisture, bulk density, total carbon content, and the short-term accretion rates obtained with feldspar horizon markers were measured to determine total carbon accumulation and storage rates.
    map background search result map search result map Long-term soil carbon data and accretion from four marsh types in Mississippi River Delta in 2015 Short term soil carbon data and accretion rates from four marsh types in Mississippi River Delta collected in 2015 Short term soil carbon data and accretion rates from four marsh types in Mississippi River Delta collected in 2015 Long-term soil carbon data and accretion from four marsh types in Mississippi River Delta in 2015