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)

Description

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.

Resources

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0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/301084
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0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/0301084
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/301084
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0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0233/0301084/
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0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/0301084
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/301084
0 Navigate directly to the URL for data access and direct download. https://www.ncei.noaa.gov/archive/accession/download/301084
0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0233/0301084/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
0 Institution web page https://serc.si.edu/
0 Institution web page https://serc.si.edu/
0 Institution web page https://serc.si.edu/
0 Information for contacts at NCEI. https://www.ncei.noaa.gov/contact
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0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/0301084
0 Navigate directly to the URL for a descriptive web page with download links. https://www.ncei.noaa.gov/archive/accession/oas/301084
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0 These data are available through the File Transfer Protocol (FTP). FTP is no longer supported by most internet browsers. You may copy and paste the FTP link to the data into an FTP client (e.g., FileZilla or WinSCP). ftp://ftp-oceans.ncei.noaa.gov/nodc/archive/arc0233/0301084/
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Tags

  • porewater hydrogen sulfide
  • porewater ammonium
  • total sediment extractable ammonium
  • membrane inlet mass spectrometer
  • sediment nitrogen
  • oceanography
  • porewater nitrate + nitrite
  • dissimilatory nitrate reduction to ammonium
  • sediment carbon
  • elemental analyzer
  • balance
  • percent nitrate removal
  • aboveground biomass
  • belowground biomass (0-5 cm depth)
  • carbon to nitrogen ratio
  • porewater phosphate
  • denitrification potential
  • belowground biomass (0-15 cm depth)
  • k6ed3f
  • total nitrate reduction
  • anaerobic ammonium oxidation

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