• Organization: U.S. Environmental Protection Agency
• Updated: 2025-06-02

Stable Isotope Ratios of Nitrate from the National Aquatic Resource Survey 2023 and 2024. We analyzed 163 samples with nitrate concentrations above 2 mg-N/L for oxygen and nitrogen isotopes of...

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2017-01-01T00:00:00.000+00:00

Stable isotope ratios from skin of live and stranded bottlenose dolphins

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• Organization: National Oceanic and Atmospheric Administration, Department of Commerce
• Updated: 2022-02-22T00:00:00.000+00:00

There are three data types in this dataset. 1) Dissolved methane concentrations and stable carbon isotope ratios were measured from water samples collected in the water column and sediments of...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2019-03-19

Time-series of mercury, carbon, and nitrogen stable isotope ratios of Lake Michigan lake trout from the EPA Great Lakes Fish Monitoring and Surveillance Program.

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• Organization: U.S. Environmental Protection Agency
• Updated: 2015-02-13

Cellulosic stable carbon and oxygen isotope values in tree-rings of mature Douglas-fir trees at five sites in western Oregon. This dataset is associated with the following publication: Lee,...

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• Organization: Department of the Interior
• Updated: 2023-12-06T00:00:00Z

Methylmercury concentrations and stable isotope ratios were measured from back feathers of California black rails (Laterallus jamaicensis coturniculus) and six taxa of their invertebrate prey...

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• Organization: Department of the Interior
• Updated: 2023-12-06T00:00:00Z

Primary and secondary consumers are important links in the trophic transfer of methylmercury, and their methylmercury concentrations are often measured to assess the potential risk of toxicity to...

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• Organization: Department of the Interior
• Updated: 2020-08-30T00:00:00Z

This study was initiated to provide baseline data and to determine the utility of stable isotope analysis to evaluate the foraging strategies of an opportunistic reptile predator. Stable isotope...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2023-08-13

Stable water isotopes of precipitation across the USA and from summer and winter. Additionally isotopic data was included for river water within the Willamette River in Oregon. The d18O and d2H...

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• Organization: Department of the Interior
• Updated: 2025-04-29T00:00:00Z

These data are in nine tables relating to three species of arctic breeding geese studied on the Colville River Delta, Alaska, 2011-2014. The tables provide: 1-2) spring migration and arrival...

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• Organization: National Aeronautics and Space Administration
• Updated: 2026-02-10

The BOREAS group TE-05 collected measurements in the NSA and SSA on gas exchange, gas composition and tree growth. This data set contains measurements of the concentration and stable carbon...

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• Organization: Department of the Interior
• Updated: 2020-08-25T00:00:00Z

Macroinvertebrate samples were collected from streams tributary to Honnedaga Lake and from the Middle Branch of the Black River during 2012-2016 and analyzed for methylmercury concentrations and...

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• 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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• Organization: U.S. Environmental Protection Agency
• Updated: 2018-04-23

This dataset contains all data used in this study, including site ID, latitude, longitude, watershed land cover, water chemistry, and carbon and nitrogen stable isotope ratios of periphyton,...

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• Organization: Department of the Interior
• Updated: 2025-05-01T00:00:00Z

This data set documents the carbon and nitrogen stable isotope ratios of age-0 Arctic cisco (Coregonus autumnalis) captured in Prudhoe Bay, Alaska in August 2009.

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• Organization: National Aeronautics and Space Administration
• Updated: 2026-02-10

This data set reports the measurement of stable carbon, nitrogen, and oxygen isotope ratios in organic material (plant, litter and soil samples) in forest canopy profiles and pasture (grasses and...

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• Organization: National Aeronautics and Space Administration
• Updated: 2026-02-10

This data set reports carbon and oxygen stable isotope ratios of atmospheric carbon dioxide (CO2) collected at several forest and pasture sites and in the free troposphere over Amazonia. There are...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2022-12-01

The data set contains the stable carbon and sulfur isotope ratios for fish tissue used in the manuscript. The data is included in the file was used in Figures 3 and 6 of the manuscript and...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2016-07-29

White sucker, Catostomus commersonii, were collected from the St. Louis River Area of Concern in 2011, 2013, and 2015. The data include size, sex, and age of fish; associated orocutaneous and...

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• Organization: U.S. Environmental Protection Agency
• Updated: 2019-08-05

Location and date associated with carbon and nitrogen stable isotope ratios of European flounder larvae and potential sources of organic matter supporting their diet, as well as outputs of the...

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