Abstract:

This dataset contains values for nitrification potential, abundances of ammonia-oxidizing bacteria (AOB), ammonia-oxidizing archaea (AOA), and soil properties collected from 13 marshes in Terrebonne Bay (TB), western Barataria Bay (WB), and eastern Barataria Bay (EB), LA. In TB and EB we sampled two oiled marshes and two unoiled marshes, and in WB we sampled three oiled marshes and two unoiled marshes. At each marsh, we collected 5-cm deep soil cores along a 20-m transect from the marsh edge and collecting soil samples every 5 m. Each sample was analyzed for nitrification potential and a suite of physical (soil water content, bulk density) and chemical properties (pH, organic C, total N, molar C:N ratio, total P). Marshes in TB were sampled monthly from May to September 2012, and the WB and EB marshes were sampled in July and September 2012. Samples collected in July 2012 were analyzed for AOA and AOB. This dataset is used in the publication: Marton JM, Roberts BJ, Bernhard AE, Giblin AE. 2015. Spatial and temporal variability of nitrification potential and ammonia-oxidizer abundances in Louisiana salt marshes. Estuaries and Coasts 38:1824-1837. DOI: 10.1007/s12237-015-9943-5

Suggested Citation:

Roberts, Brian and John Marton. 2016. Nitrification potential and ammonia-oxidizer abundances in Louisiana salt marshes, May to September 2012. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/N70Z715C

Publications:

Marton, J. M., Roberts, B. J., Bernhard, A. E., & Giblin, A. E. (2015). Spatial and Temporal Variability of Nitrification Potential and Ammonia-Oxidizer Abundances in Louisiana Salt Marshes. Estuaries and Coasts. doi:10.1007/s12237-015-9943-5

Bernhard, A. E., Sheffer, R., Giblin, A. E., Marton, J. M., & Roberts, B. J. (2016). Population Dynamics and Community Composition of Ammonia Oxidizers in Salt Marshes after the Deepwater Horizon Oil Spill. Frontiers in Microbiology, 7. doi:10.3389/fmicb.2016.00854

Bernhard, A. E., Chelsky, A., Giblin, A. E., & Roberts, B. J. (2019). Influence of Local and Regional Drivers on Spatial and Temporal Variation of Ammonia‐Oxidizing Communities in Gulf of Mexico Salt Marshes. Environmental Microbiology Reports. doi:10.1111/1758-2229.12802

Schutte, C. A., Marton, J. M., Bernhard, A. E., Giblin, A. E., & Roberts, B. J. (2020). No Evidence for Long-term Impacts of Oil Spill Contamination on Salt Marsh Soil Nitrogen Cycling Processes. Estuaries and Coasts. doi:10.1007/s12237-020-00699-z

Purpose:

This dataset was developed as part of a research project investigating the effects of the Deepwater Horizon oil spill on salt marsh biogeochemistry. This particular project was directed to determine: 1) if the marsh’s ability to cycle reactive nitrogen was inhibited (nitrification potential); 2) if there was a significant impact on AOB and/or AOA; and 3) if there were spatial (regional, within marsh) or temporal patterns in nitrification potential.

Data Parameters and Units:

Region- Region of collection (TB- Terrebonne Bay; WB- western Barataria Bay; EB- eastern Barataria Bay), Site- Site identifier, Latitude (decimal degrees), Longitude (decimal degrees), Plot- Plots along transect, Oiled- Indicates whether the marsh received Macondo Oil, Distance- Distance from the marsh edge of the sampling plot (meters), Month--Indicates month in 2012 that samples were collected, Nitrification- Nitrification Potential (nM NO3-N per dry gram per day), Organic Matter- soil organic matter content (%), Water Content- gravimetric soil water content (%), Bulk density- soil bulk density (grams per cubic centimeter), Organic C- soil organic carbon content (%), Total N- soil total nitrogen content (%),Total P- soil total phosphorus (micrograms P per gram soil), C:N- soil molar carbon to nitrogen ratio, N:P- soil molar nitrogen to phosphorus ratio, PO4-P- phosphate of overlying water (micromolar), NO3-N- nitrate of overlying water(micromolar), Silicate- silicate of overlying water (micromolar), NH4-N- ammonium of overlying water (micromolar), AOB- abundance of ammonia-oxidizing bacteria (amoA copies per dry gram soil), AOA- abundance of ammonia-oxidizing archaea (amoA copies per dry gram soil)

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