Nutrient properties of coastal wetland soil cores collected in June 2018 from Barataria Bay, Louisiana (NCEI Accession 0291422)

This dataset contains chemical data collected in the Gulf of Mexico from 2018-06-01 to 2018-06-30. These data include Ammonium, Nitrate, and depth. The instruments used to collect these data include Centrifuge, Discrete Analyzer, Push Corer, and Shaker. These data were collected by John R. White, Robert L. Cook, and Zuo Xue of Louisiana State University and Lisa G. Chambers of University of Central Florida as part of the "Fate of Coastal Wetland Carbon Under Increasing Sea Level Rise: Using the Subsiding Louisiana Coast as a Proxy for Future World-Wide Sea Level Projections (Submerged Wetland Carbon)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2021-05-21.

The following is the text of the dataset description provided by BCO-DMO:

Acquisition Description:
Nine coastal wetland soil cores were collected in June 2018 from Barataria Bay, Louisiana, a shallow open water basin located west of the Mississippi River Delta. Soil cores were collected along three transects, roughly 1 meter apart, that consisted of three points: the coastal fringe (0 m inland), 1 meter inland, and 2 meters inland. Soil cores were collected in polycarbonate tubes via the push core method to a depth of 150 cm, and field-extruded into 15 separate 10-cm intervals. Soils were stored in polyethylene bags on ice and immediately transported back to the laboratory, where they were kept at 4 °C until sample analysis was complete.

This dataset includes analyses of nutrients.

Samples of 2.5 grams of wet soil (both from the field and from the bottle incubation) were placed into 40 mL centrifuge tubes to which 25 mL of 2 M KCl was added. Samples were then shaken continuously on an orbital shaker for 1 hour at 25 °C and 150 rpm, then centrifuged for 10 minutes at 10 °C and 5000 rpm. Following the centrifuge step, samples were immediately filtered through Supor 0.45 μM filters and acidified with double distilled H2SO4 to a pH of < 2 for preservation. Extractable nutrients (nitrate, soluble reactive phosphorus, and ammonium) were then analyzed with an AQ2 Automated Discrete Analyzer (Seal Analytical, Mequon, WI) and using EPA methods 231-A Rev.0, 210-A Rev.1, and 204-A Rev.0.