Catalog - Data.gov

Found 247 datasets matching "Ammonium nitrogen".

Federal
Stable isotope data for Ammonium loss microbiologically mediated by Fe(III) and Mn(IV) reduction along a coastal lagoon system
- Organization: U.S. Environmental Protection Agency
- Updated: 2022-11-07
These data are carbon and nitrogen content and stable isotope measurements of sediments from a lagoon in the Baja California Peninsula. The %N column gives the percent nitrogen, the delta-15-NAir...
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Search relevance: 88.48 | Views last month: 0
Federal
Monthly inorganic nitrogen atmospheric wet deposition estimates for the conterminous United States, 1999 through 2020
- Organization: Department of the Interior
- Updated: 2023-04-19T00:00:00Z
This data release provides estimates of monthly wet atmospheric deposition of total inorganic nitrogen (TIN)--the summation of nitrate (NO3) and ammonium (NH4) ions--for the conterminous United...
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Search relevance: 85.10 | Views last month: 0
Federal
Nitrate reduction rates and soil/ water chemistry from roadside ditches in the Mobile Bay (AL, USA) region (2018-05-23 to 2018-06-08) (NCEI Accession 0211099)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2020-07-15T00:00:00.000+00:00
Ninety-six roadside ditches spanning three landuse types in the Mobile Bay (Alabama, USA) region were sampled in May-June of 2018. Isotope pairing was used to measure nitrate reduction rates...
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Search relevance: 76.40 | Views last month: 0
Federal
Surface water and shallow groundwater geochemistry and radium isotopes measured from land-based sampling in coastal Georgia, USA from 2001-07-26 to 2010-09-28 (NCEI Accession 0208686)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2020-07-21T00:00:00.000+00:00
Surface water and groundwater radium activities, concentrations of various dissolved materials, and environmental parameters (water temperature, salinity, and pH). Activities of 228Ra, 226Ra,...
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Search relevance: 75.20 | Views last month: 0
Federal
Nutrients, sedimentation and total suspended solids in the St. Thomas East End Reserves in the Caribbean Sea from 2012-01-16 to 2013-11-25 (NCEI Accession 0139480)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2016-01-15T00:00:00.000+00:00
This data set contains the results from monitoring in the St. Thomas East End Reserves (STEER) in St. Thomas, USVI, from January 2012 to November 2013. The monitoring was conducted by project...
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Search relevance: 74.57 | Views last month: 0
Federal
Bottle discrete measurements of dissolved inorganic carbon (DIC), total alkalinity (TA), temperature, salinity, oxygen and other hydrographic and chemical parameters during the small boat Buzzards Baykeeper cruises and other platforms in the Buzzards Bay, Massachusetts from 2015-06-15 to 2017-09-01 (NCEI Accession 0206206)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2019-10-31T00:00:00.000+00:00
This dataset includes bottle discrete data collected during the small boat Buzzards Baykeeper cruises and other platforms in the Buzzards Bay, Massachusetts from 2015-06-15 to 2017-09-01. These...
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Search relevance: 74.41 | Views last month: 0
Federal
Long-term performance of three mesophilic anaerobic digesters to convert animal and agro-industrial wastes into organic fertilizer
- Organization: U.S. Environmental Protection Agency
- Updated: 2020-09-13
Anaerobic digestion (AD) is a process used to convert animal and agro-industrial wastes to organic fertilizers. Since digester effluents are used as for cropland applications, we are interested to...
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Search relevance: 72.88 | Views last month: 3
Federal
Nitrogen content and delta N-15 of marine algae and associated waters of Maui, Hawaii, from 2012-07-28 to 2014-04-01 (NCEI Accession 0156294)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2016-08-12T00:00:00.000+00:00
This dataset includes nutrient data related to algal and water samples collected between 2012 and 2014 on Maui, Hawaii, as part of the University of Hawaii SeaGrant Project R/HE-17. Algal tissue...
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Search relevance: 72.32 | Views last month: 0
Federal
ModMon Neuse River Estuary and Pamlico Sound Water Quality Monitoring from 1994-01-24 to 2022-01-22 (NCEI Accession 0294041)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-01-27T00:00:00.000+00:00
The Neuse River Estuary Water Quality Dataset is a compilation of the biological, chemical and physical water quality data that was collected along the length of the Neuse River Estuary, North...
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Search relevance: 70.75 | Views last month: 0
Federal
Attributes for NHDPlus Version 2.1 Catchments and Modified Routing of Upstream Watersheds for the Conterminous United States: National Atmospheric Deposition Program (NADP) National Trends Network (NTN) 1985-2014
- Organization: Department of the Interior
- Updated: 2023-08-02T00:00:00Z
This data set represents National Atmospheric Deposition Program (NADP) National Trends Network average of annual precipitation-weighted mean atmospheric deposition for seven select constituents...
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Search relevance: 68.92 | Views last month: 0
Federal
NCCOS Assessment: Water quality data for the South Florida Reef Tract from 2016-09-22 to 2018-12-11 (NCEI Accession 0230406)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2021-05-19T00:00:00.000+00:00
This dataset represents three years of water quality data collected in the South Florida Reef Tract. A standard suite of nutrient parameters (nitrate, nitrite, ammonium, urea, total nitrogen,...
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Search relevance: 68.82 | Views last month: 0
Federal
NCCOS Assessment: Water Quality Data to Assess Eutrophication Effects on Coral Ecosystem Health in Vatia Bay, American Samoa from 2015-05-13 to 2018-08-28 (NCEI Accession 0208020)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2019-12-10T00:00:00.000+00:00
This dataset represents three years of water quality data collected in Vatia Bay, American Samoa. A standard suite of nutrient parameters (nitrate, nitrite, ammonium, urea, total nitrogen,...
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Search relevance: 65.86 | Views last month: 0
Federal
NOAA RESTORE Science Program: Effects of nitrogen sources and plankton food-web dynamics on habitat quality for the larvae of Atlantic Bluefin Tuna in the Gulf of Mexico - biogeochemistry, dissolved inorganic nutrient, mesozooplankton, phytoplankton, and bacteria data from 2017-05-10 to 2018-05-19
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2021-06-10T00:00:00.000+00:00
This dataset presents results from surface-tethered drifting sediment traps, zooplankton net tows, dissolved inorganic nutrient concentration analyses made on water column samples, and flow...
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Search relevance: 65.17 | Views last month: 0
Federal
Seagrass density and biomass, and related data from seagrass monitoring station LM-151 in Laguna Madre Texas from 1989-03-24 to 2022-06-23 (NCEI Accession 0282643)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2023-09-13T00:00:00.000+00:00
This dataset contains raw sampling data beginning in 1989 for a long-term environmental and seagrass monitoring station in Laguna Madre (“LM-151”). This project served to understand environmental...
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Search relevance: 60.94 | Views last month: 0
Federal
SRM 194a Ammonium Dihydrogen Phosphate
- Organization: National Institute of Standards and Technology
- Updated: 2016-09-06 00:00:00
SRM 194a Ammonium Dihydrogen Phosphate - This Standard Reference Material (SRM) is a highly purified and homogeneous lot of crystalline ammonium dihydrogen phosphate (NH4H2PO4). It is intended...

Search relevance: 60.79 | Views last month: 0
Federal
Dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from HEALY in the Arctic Ocean, Beaufort Sea and Bering Sea from 2002-07-18 to 2002-08-21 (NCEI Accession 0113953)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2017-02-22T00:00:00.000+00:00
This dataset includes biological, chemical, discrete sample, physical and profile data collected from HEALY in the Arctic Ocean, Beaufort Sea and Bering Sea from 2002-07-18 to 2002-08-21. These...
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Search relevance: 58.22 | Views last month: 0
Federal
Dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, bottle and other instruments from HEALY in the Arctic Ocean, Beaufort Sea and Bering Sea from 2002-07-18 to 2002-08-21 (NCEI Accession 0113953)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2017-02-22T00:00:00.000+00:00
This dataset includes biological, chemical, discrete sample, physical and profile data collected from HEALY in the Arctic Ocean, Beaufort Sea and Bering Sea from 2002-07-18 to 2002-08-21. These...
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Search relevance: 58.11 | Views last month: 0
Federal
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)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2021-01-13T00:00:00.000+00:00
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....
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Search relevance: 57.89 | Views last month: 0
Federal
NCCOS Assessment: Water Quality in Fagatele Bay, National Marine Sanctuary of American Samoa, from 2019-04-22 to 2019-04-26 (NCEI Accession 0247462)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2022-02-23T00:00:00.000+00:00
This dataset represents water quality chemistry information for Fagatele Bay, a unit of the National Marine Sanctuary of American Samoa (NMSAS). Contaminant groups quantified were: pesticides,...
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Search relevance: 57.62 | Views last month: 0
Federal
Dissolved inorganic carbon, alkalinity, temperature, salinity and other variables collected from discrete sample and profile observations using CTD, PAR Sensor and other instruments from HEALY in the Arctic Ocean, Beaufort Sea and Bering Sea from 2002-05-05 to 2002-06-15 (NCEI Accession 0113952)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2017-02-22T00:00:00.000+00:00
This dataset includes biological, chemical, discrete sample, optical, physical and profile data collected from HEALY in the Arctic Ocean, Beaufort Sea and Bering Sea from 2002-05-05 to 2002-06-15....
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Search relevance: 57.22 | Views last month: 0

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