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Evaluating Regional Patterns in Nitrate Sources to Watersheds in National Parks of the Rocky Mountains using Nitrate Isotopes

Citation

Leora Nanus, Mark W Williams, Donald H Campbell, Emily M Elliott, and Carol Kendall, Evaluating Regional Patterns in Nitrate Sources to Watersheds in National Parks of the Rocky Mountains using Nitrate Isotopes: .

Summary

In the Rocky Mountains, there is uncertainty about the source areas and emission types that contribute to nitrate (NO3) deposition, which can adversely affect sensitive aquatic habitats of high-elevation watersheds. Regional patterns in NO3 deposition sources were evaluated using NO3 isotopes in five National Parks, including 37 lakes and 7 precipitation sites. Results indicate that lake NO3 ranged from detection limit to 38 μeq/L, δ18O (NO3) ranged from −5.7 to +21.3‰, and δ15N (NO3) ranged from −6.6 to +4.6‰. δ18O (NO3) in precipitation ranged from +71 to +78‰. δ15N (NO3) in precipitation and lakes overlap; however, δ15N (NO3) in precipitation is more depleted than δ15N (NO3) in lakes, ranging from −5.5 [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS export <br> On - Tue May 10 11:16:35 CDT 2011

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Title Citation Evaluating Regional Patterns in Nitrate Sources to Watersheds in National Parks of the Rocky Mountains using Nitrate Isotopes

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