Denitrification Capacity of a Natural and a Restored Marsh in the Northern Gulf of Mexico from 2014-02-27 to 2015-02-26 (NCEI Accession 0223379)
This dataset includes denitrification rates across a typical northern Gulf of Mexico salt marsh landscape that included a natural marsh, a tidal creek, and a 21-year-old restored salt marsh. Denitrification capacity, measured with the isotope pairing technique on a membrane inlet mass spectrometer, was comparable across the sites despite significant differences in above and below ground characteristics. Total extractable ammonium concentrations and sediment carbon content were higher at the natural marsh compared to the restored marsh. Hydrogen sulfide concentrations were highest at the creek compared to the vegetated sites and lowest at the restored marsh. This suggests that marsh restoration projects reestablish nitrogen removal capacity at rates similar to those in natural systems and can help to significantly reduce nitrogen loads to the coastal ocean.
Complete Metadata
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| description | This dataset includes denitrification rates across a typical northern Gulf of Mexico salt marsh landscape that included a natural marsh, a tidal creek, and a 21-year-old restored salt marsh. Denitrification capacity, measured with the isotope pairing technique on a membrane inlet mass spectrometer, was comparable across the sites despite significant differences in above and below ground characteristics. Total extractable ammonium concentrations and sediment carbon content were higher at the natural marsh compared to the restored marsh. Hydrogen sulfide concentrations were highest at the creek compared to the vegetated sites and lowest at the restored marsh. This suggests that marsh restoration projects reestablish nitrogen removal capacity at rates similar to those in natural systems and can help to significantly reduce nitrogen loads to the coastal ocean. |
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| identifier | gov.noaa.nodc:0223379 |
| issued | 2020-12-18T00:00:00.000+00:00 |
| keyword |
[
"0223379",
"AMMONIUM (NH4)",
"NITRATE",
"nitrate + nitrite content (concentration)",
"NITRITE",
"phosphate",
"SALINITY",
"WATER TEMPERATURE",
"CHN Analyzer",
"GPS",
"multi-parameter water quality sensor",
"nutrient autoanalyzer",
"sediment sampler - corer",
"in situ",
"Dauphin Island Sea Lab",
"Coastal Waters of Gulf of Mexico",
"oceanography",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > AMMONIA",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRATE",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > NITRITE",
"EARTH SCIENCE > OCEANS > OCEAN CHEMISTRY > PHOSPHATE",
"EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > WATER TEMPERATURE",
"EARTH SCIENCE > OCEANS > SALINITY/DENSITY > SALINITY",
"C:N",
"Carbon content of the sediment as percentage",
"Chl-a extracted from sediments (mg m-2)",
"D14 (denitrification rates from ambient nitrate) (uM N m-2 hr-1)",
"D15 (denitrification rates from added 15 nitrate isotope) (uM N m-2 hr-1)",
"DNF (Denitrification) Capacity (uM N m-2 hr-1)",
"Dn14 (coupled nitriciation-denitrification) (uM N m-2 hr-1)",
"Dn14 percent of D14",
"Dried organic biomass above ground (kg m-2)",
"Dried organic biomass belowground in experiment cores to a depth of 20 cm (kg m-2)",
"Dw14 (direct denitrification rates of in situ water column nitrate) (uM N m-2 hr-1)",
"Elevation",
"NH4 extracted from sediments in nmole g-1 dry sediment",
"NH4 flux rates (uM N m-2 hr-1)",
"NO3 flux rates (uM N m-2 hr-1)",
"PO4 flux rates (uM N m-2 hr-1)",
"Porewater NH4 at 10 cm depth (micromolar)",
"Porewater NO2 at 10 cm depth (micromolar)",
"Porewater NO3 at 10 cm depth (micromolar)",
"Porewater NOx at 10 cm depth (micromolar)",
"Porewater PO4 at 10 cm depth (micromolar)",
"Porewater Sulfide at 10 cm depth (micromolar)",
"Sample replicates",
"Sampling site type",
"Seawater NH4 (micromolar)",
"Seawater NO2 (micromolar)",
"Seawater NO3 (micromolar)",
"Seawater NOx (micromolar)",
"Seawater PO4 (micromolar)",
"AUTOANALYZER > AUTOANALYZER",
"CHN ANALYZERS > Carbon, Hydrogen, Nitrogen Analyzers",
"GPS RECEIVERS > GPS RECEIVERS",
"SEDIMENT CORERS > SEDIMENT CORERS",
"0.25 m2 quadrat",
"Carlo Erba element analyzer",
"Core tubes",
"Membrane Inlet Mass Spectrometer",
"Porewater sipper",
"Skalar SAN + Autoanalyzer",
"Trimble NetRS GPS",
"Triplicate cores (ID 2.6 cm)",
"YSI 556 Multiparameter meter",
"cut off syringe corer (I.D. 1.3cm)",
"OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF AMERICA",
"OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN > GULF OF MEXICO",
"PMTKP3"
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| landingPage | https://www.ncei.noaa.gov/contact |
| language |
[]
|
| license | https://creativecommons.org/publicdomain/zero/1.0/ |
| modified | 2021-01-13T00:00:00.000+00:00 |
| publisher |
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|
| references |
[
"https://doi.org/10.1007/s00267-018-1057-y"
]
|
| rights | otherRestrictions |
| spatial | -88.0778,30.2508,-88.0828,30.2522 |
| temporal | 2014-02-27T00:00:00+00:00/2015-02-26T00:00:00+00:00 |
| title | Denitrification Capacity of a Natural and a Restored Marsh in the Northern Gulf of Mexico from 2014-02-27 to 2015-02-26 (NCEI Accession 0223379) |
