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    Description

    Excess nitrogen stemming from human activities is a common water pollutant. Fertilizer runoff, sewage, and fossil fuel emission all contain nitrogen that often ends in streams, rivers, and ultimately the ocean. Research has found that more nitrogen enters a river system than can be accounted for at its mouth, indicating that instream processing is occurring. A team of scientists conducted several experiments on streams across the country to better understand the fate of waterborne nitrogen.

    Publication Notes

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    • This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.

    Citation

    Mazza, Rhonda; Johnson, Sherri. 2009. Undercover isotopes: tracking the fate of nitrogen in streams. Science Findings 115. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 5 p.

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https://www.fs.usda.gov/treesearch/pubs/33423