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Controls on nitrogen flux in alpine/subalpine watersheds of Colorado

Citation

Campbell, Donald H, Baron, Jill S, Tonnessen, Kathy A, Brooks, Paul D, and Schuster, Paul F, Controls on nitrogen flux in alpine/subalpine watersheds of Colorado: .

Summary

High-altitude watersheds in the Front Range of Colorado show symptoms of advanced stages of nitrogen excess, despite having less nitrogen in atmospheric deposition than other regions where watersheds retain nitrogen. In two alpine/subalpine subbasins of the Loch Vale watershed, atmospheric deposition of NO3? plus NH4+ was 3.2?5.5 kg N ha?1, and watershed export was 1.8?3.9 kg N ha?1 for water years 1992?1997. Annual N export increased in years with greater input of N, but most of the additional N was retained in the watershed, indicating that parts of the ecosystem are nitrogen-limited. Dissolved inorganic nitrogen (DIN) concentrations were greatest in subsurface water of talus landscapes, where mineralization and nitrification augment [...]

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  • Upper Colorado River Basin

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From Source - Mendeley RIS Export <br> On - Wed Sep 19 08:08:31 MDT 2012

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Title Citation Controls on nitrogen flux in alpine/subalpine watersheds of Colorado

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