Catalog - Data.gov

Found 18 datasets matching "nitrogen isotope ratio".

#1 Federal
Data for food matrix reference materials for hydrogen, carbon, nitrogen, oxygen, and sulfur stable isotope-ratio measurements
- Organization: Department of the Interior
- Updated: 2020-09-04T00:00:00Z
An international project developed, quality-tested, and measured isotope−delta values of 10 new food matrix reference materials (RMs) for hydrogen, carbon, nitrogen, oxygen, and sulfur stable...
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Search relevance: 169.49 | Views last month: 0
#2 Federal
Fowl River, Alabama Marsh Restoration Study: Stable isotope and anthropogenic influences component (NCEI Accession 0195411)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2019-08-12T00:00:00.000+00:00
This dataset contains information collected by the Fowl River Marsh Health and Recovery Study: Stable isotope and anthropogenic influences component. Records include nitrogen (N) and carbon (C)...
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Search relevance: 126.61 | Views last month: 0
#3 Federal
Assessment of Mercury Cycling in the St Louis River, MN using Mercury and Food Web (Carbon and Nitrogen) Stable Isotopes: U.S. Geological Survey Data Release
- Organization: U.S. Environmental Protection Agency
- Updated: 2020-08-01
Mercury concentration, mercury stable isotope ratio, and carbon and nitrogen stable isotope ratio data as applicable for sediment, water, invertebrates, and fish collected from the St. Louis River...
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Search relevance: 75.71 | Views last month: 0
#4 Federal
SAFARI 2000 Plant and Soil C and N Isotopes, Southern Africa, 1995-2000
- Organization: National Aeronautics and Space Administration
- Updated: 2026-02-17
This data set contains measurements of the concentration and stable carbon (13C / 12C) and nitrogen (15N / 14N) isotope ratios of plant (leaves, roots and fungi) and soil samples from southern...
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Search relevance: 72.77 | Views last month: 0
#5 Federal
LBA-ECO CD-08 Leaf Carbon, Nitrogen, LAI, and Isotope Data, Manaus, Brazil: 2001
- Organization: National Aeronautics and Space Administration
- Updated: 2026-02-17
This data set provides measurements for carbon (C), nitrogen (N), leaf area index (LAI), and carbon isotope ratio data (13C and 14C) of leaves sampled at the Manaus ZF2 Jacaranda transect area,...
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Search relevance: 72.35 | Views last month: 0
#6 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: 68.94 | Views last month: 0
#7 Federal
Chemical and isotopic data for a study of seasonality of nitrate sources and isotopic composition in the Upper Illinois River, 2004-2008
- Organization: Department of the Interior
- Updated: 2020-08-31T00:00:00Z
This data release contains chemical and isotopic data used in an investigation of nitrate sources and transport in the Upper Illinois River basin. Samples (total = 445) include river water from...
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Search relevance: 63.63 | Views last month: 0
#8 Federal
CARBON DIOXIDE - PARTIAL PRESSURE (pCO2) - SEA and Other Data from MULTIPLE SHIPS From TOGA Area - Pacific (30 N to 30 S) from 1989-01-01 to 1989-12-31 (NCEI Accession 9500075)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2002-11-19T00:00:00.000+00:00
Sea/air gas ratios data was collected in TOGA Area - Pacific (30 N to 30 S) between January 1, 1989 and December 31, 1989 during cruises conducted using ships WECOMA, KILA and MOANA WAVE as part...
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Search relevance: 63.37 | Views last month: 0
#9 Federal
Gas chemistry and isotope compositions at Sulphur Banks, Kīlauea Volcano, Hawai`i
- Organization: Department of the Interior
- Updated: 2020-12-07T00:00:00Z
Sulphur Banks, near the summit of Kīlauea Volcano on the Island of Hawai`i, is a thermal area where volcanic gases and steam are discharged. A research well drilled in the 1920s at Sulphur Banks...
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Search relevance: 55.93 | Views last month: 0
#10 Federal
Data from: Towards predicting biochar impacts on plant-available soil nitrogen content
- Organization: Department of Agriculture
- Updated: 2025-11-21
Biochars are charcoals used as soil amendments, and they have many beneficial effects on soil health. However, one negative effect is biochars often reduce concentrations of soil nitrogen that are...
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Search relevance: 45.43 | Views last month: 0
#11 Federal
Data from: Phenotypic and nodule microbial diversity among crimson clover (Trifolium incarnatum L.) accessions
- Organization: Department of Agriculture
- Updated: 2025-11-22
Phenotypic evaluation of 37 crimson clover (Trifolium incarnatum L.) accessions from the US National Plant Germplasm System. Focus of the trial was on traits important for cover crop performance,...
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Search relevance: 34.29 | Views last month: 2
#12 Federal
238U/206Pb SHRIMP, 40Ar/39Ar geochronologic, and geochemical data from the Central Virginia Piedmont
- Organization: Department of the Interior
- Updated: 2025-02-18T00:00:00Z
The Central Virginia Seismic Zone (CVSZ) is an area of historically increased earthquake activity that is of particular importance due to its proximity to many well-populated regions in the...
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Search relevance: 23.09 | Views last month: 2
#13 Federal
Diet and stable isotope (bulk-tissue and compound specific amino acid) data of larval and juvenile deep pelagic Paralepidid fishes collected during multiple cruises in the northern Gulf of Mexico from 2010-09-10 to 2011-08-23 (NCEI Accession 0245830)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2022-03-21T00:00:00.000+00:00
A series of Natural Resource Damage Assessment (NRDA) cruises were conducted in 2010 and 2011 to evaluate the distribution and densities of ichthyoplankton and other zooplankton in Gulf of Mexico...
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Search relevance: 18.17 | Views last month: 0
#14 Federal
NOAA RESTORE Science Program: Gulf-wide assessment of habitat use and habitat-specific production estimates of nekton in turtlegrass (Thalassia testudinum): Nekton and primary producer stable isotopes in turtlegrass-dominated seagrass beds in the northern Gulf of America, 2018-05-23 to 2018-10-03 (NCEI Accession 0304846)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-06-24T00:00:00.000+00:00
This dataset consists of stable isotope data from turtlegrass-dominated seagrass beds of the northern Gulf of America (formally the Gulf of Mexico), including Lower Laguna Madre, TX; Coastal Bend,...
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Search relevance: 17.68 | Views last month: 0
#15 Federal
Water temperature, salinity, and others taken by CTD, ADCP, and other instruments from the research vessel Araon in the Bering Sea, Bering Strait, and Chukchi Sea from 2022-07-20 to 2022-08-19 (NCEI Accession 0277537)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2024-08-27T00:00:00.000+00:00
This dataset contains water temperature, salinity, and other ocean and atmosphere parameters taken by CTD, ADCP, and other instruments from the research vessel Araon, cruise ARA13B, in the Bering...
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Search relevance: 16.19 | Views last month: 0
#16 Federal
Water potential temperature (theta), salinity, and others taken by CTD and water samples from the research vessel Araon in the Bering Strait, Chukchi Sea from 2023-08-01 to 2023-08-05 (NCEI Accession 0293056)
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2024-05-28T00:00:00.000+00:00
This data set contains water temperature, salinity, and others taken by CTD and water samples from the R/V Araon in Aug. 2023 in Bering - Chukchi Sea area. The expedition was a part of an ongoing...
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Search relevance: 16.15 | Views last month: 0
#17 Federal
Marine biodiversity data collected in support of the Arctic Marine Biodiversity Observing Network (AMBON) project from 2015 to 2020
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-03-11T00:00:00.000+00:00
This dataset includes marine biodiversity data collected in support of the Arctic Marine Biodiversity Observing Network (AMBON) project from 2015 to 2020. These data include fish, seabird and...
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Search relevance: 14.88 | Views last month: 0
#18 Federal
Datasets managed by the NSF Arctic Data Center and archived at the NOAA National Centers for Environmental Information
- Organization: National Oceanic and Atmospheric Administration, Department of Commerce
- Updated: 2025-03-30T00:00:00.000+00:00
The National Science Foundation (NSF) Arctic Data Center (ADC) preserves and provides access to multi-disciplinary NSF-funded global cryosphere-land-ocean-atmosphere data (including in situ and...
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Search relevance: 7.92 | Views last month: 0

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