Dataset Available

Soil carbon and nitrogen content data obtained from salt marsh cores collected in northern Barataria Bay, Louisiana on 2018-10-30

Authors: Sean Graham

Published On: Jan 31 2020 11:02 UTC

DOI: https://doi.org/10.7266/n7-wex4-bq98

UDI: R5.x282.000:0006

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Project Information

Funded By:
Gulf of Mexico Research Initiative

Funding Cycle:
RFP-V

Research Group:
Long-Term Impact, Recovery and Resilience: Wetland plant-microbial-benthic ecosystem responses to the Deepwater Horizon oil spill and mitigation strategies promoting sustainability

Point of Contact

Sean Graham
Gulf South Research Corporation
sagraham001@gmail.com

Data Collection Period

2018-10-30

Theme keywords

salt marsh, oil, soil carbon, soil nitrogen, soil bulk density

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Abstract:

This dataset contains soil carbon and nitrogen content data obtained from salt marsh cores collected in northern Barataria Bay, Louisiana on 2018-10-30. Soil cores were collected from the top 15 cm of soil using a 5 cm diameter by 50 cm long semi-cylinder peat corer from each of 21 sampling sites representing a range of oiling conditions: heavy oiling (n=7), moderate oiling (n=7), and no oiling as a reference (n=7). All soil cores were initially dried to a constant mass at 60 C and weighted to determine the bulk density (g/cm3). Dried soil samples were ground to a fine powder first using a mortar/pestle and then with a ball mill grinder. Dried samples from each site were then weighed into small aluminium weigh dished and analyzed for total carbon (%) and nitrogen (%) content using an Elemental Combustion System.

Suggested Citation:

Sean Graham. 2020. Soil carbon and nitrogen content data obtained from salt marsh cores collected in northern Barataria Bay, Louisiana on 2018-10-30. Distributed by: GRIIDC, Harte Research Institute, Texas A&M University–Corpus Christi. doi:10.7266/n7-wex4-bq98

Purpose:

To determine the long-term impacts of Deepwater Horizon oiling on salt marsh soil carbon and nitrogen content.

Data Parameters and Units:

Sampling Date [MM/DD/YYYY]; Oiling Category [Reference (n=7), Moderate Oil (n=7), Heavy Oil (n=7)]; Treatment ID [RF, MD, HV]; Station ID; Latitude and Longitude [Decimal degrees]; Total Soil Carbon [%]; Total Soil Nitrogen [%]; Soil Bulk Density [g/cm3].

Methods:

Soil cores were collected from each of the 21 sampling sites in October 2018 from the top 15 cm of soil using a 5 cm diameter by 50 cm long semi-cylinder peat corer. All soil cores were initially dried to a constant mass at 60 C and weighted to determine the bulk density (g/cm3). Dried soil samples were ground to a fine powder first using a mortar/pestle and then with a ball mill grinder. Dried samples from each site were then weighed into small aluminium weigh dished and analyzed for total carbon (%) and nitrogen (%) content using a Costech 4010 CHNS/O Elemental Combustion System.