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    • Sediment and porewater nitrification and organic matter data in a Northern Gulf of Mexico marsh from 2021-05-26 to 2022-05-21 (NCEI Accession 0301084)

    Metadata Updated: November 1, 2025

    We conducted a year-long study with the main objective of comparing denitrification, anammox, and dissimilatory nitrate reduction to ammonium (DNRA) across three different vegetation zones (Distichlis spicata, Juncus roemerianus, and Cladium mariscus Spp.) in the salt marsh at Weeks Bay National Estuarine Research Reserve (NERR) in Fairhope, AL., USA. Sediment samples were collected from each vegetation zone to measure rates of denitrification, anammox, and DNRA using a membrane inlet mass spectrometer. Percent nitrate removal was calculated as the product of denitrification plus anammox divided by the sum of all three nitrate reduction processes. Plant biomass and soil carbon and nitrate content were collected to characterize each zone. Nutrient stocks for phosphate, ammonium, nitrate + nitrite, and hydrogen sulfides from each marsh were measured from porewater samples taken from 10 cm depth within each vegetation zone.

    We also performed a laboratory manipulation where we subjected sediments from each vegetation zone with nitrate and organic matter (Spirulina cyanobacteria) in a full factorial design, giving us four total treatment conditions: control, + nitrate only, + organic matter only, and + nitrate + organic matter. We incubated sediments in anoxic tanks in their respective treatments for 28 days while periodically removing a subset of sediment over five timepoints during the incubation (days 1, 3, 7, 15, and 28). The removed sediments were used to measure denitrification, anammox and DNRA potentials with the objective to see how nitrate and organic matter influence nitrate reduction processes from sediments across the three vegetation types. Overlying water from each treatment tank was sampled every other day to monitor nutrient concentrations (phosphate, ammonium, nitrate + nitrite) throughout the incubation.

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    License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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    Dates

    Metadata Date 2025-05-16T15:36:11Z
    Metadata Created Date February 1, 2025
    Metadata Updated Date November 1, 2025
    Reference Date(s) February 5, 2025 (publication)
    Frequency Of Update asNeeded

    Metadata Source

    Harvested from NOAA/NESDIS/ncei/accessions

    Other Data Resources

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    Additional Metadata

    Resource Type Dataset
    Metadata Date 2025-05-16T15:36:11Z
    Metadata Created Date February 1, 2025
    Metadata Updated Date November 1, 2025
    Reference Date(s) February 5, 2025 (publication)
    Responsible Party (Point of Contact)
    Contact Email
    Guid gov.noaa.nodc:0301084
    Access Constraints Cite as: Ledford, Taylor C.; Mortazavi, Behzad; Tatariw, Corianne; Rice, S. Elaine; Cherry, Julia A. (2025). Sediment and porewater nitrification and organic matter data in a Northern Gulf of Mexico marsh from 2021-05-26 to 2022-05-21 (NCEI Accession 0301084). [indicate subset used]. NOAA National Centers for Environmental Information. Dataset. https://www.ncei.noaa.gov/archive/accession/0301084. Accessed [date]., Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose.
    Bbox East Long -87.826089
    Bbox North Lat 30.416272
    Bbox South Lat 30.41568
    Bbox West Long -87.829088
    Coupled Resource
    Frequency Of Update asNeeded
    Graphic Preview Description Preview graphic
    Graphic Preview File https://www.ncei.noaa.gov/access/metadata/landing-page/bin/gfx?id=gov.noaa.nodc:0301084
    Graphic Preview Type PNG
    Harvest Object Id 8e40d431-8e01-4004-8f0f-ef960591b01d
    Harvest Source Id c084a438-6f6b-470d-93e0-16aeddb9f513
    Harvest Source Title NOAA/NESDIS/ncei/accessions
    Licence accessLevel: Public
    Lineage
    Metadata Language eng
    Metadata Type geospatial
    Old Spatial {"type": "Polygon", "coordinates": [[[-87.829088, 30.41568], [-87.826089, 30.41568], [-87.826089, 30.416272], [-87.829088, 30.416272], [-87.829088, 30.41568]]]}
    Progress completed
    Spatial Data Service Type
    Spatial Reference System
    Spatial Harvester True
    Temporal Extent Begin 2021-05-26
    Temporal Extent End 2022-05-24

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