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Nitrogen Fluxes in a High Elevation Colorado Rocky Mountain Basin by JILL S. BARON; DONALD H. CAMPBELL is a Environmental Science article available to read on EtoBox.

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Measured, calculated and simulated values were combined to develop an annual nitrogen budget for Loch Vale Watershed (LVWS) in the Colorado Front Range. Nine-year average wet nitrogen deposition values were 1 . 6 s 0Á36 kg NO 3 -N ha À1 , and 1 . 0 s 0Á3 kg NH 4 -N ha À1 . Assuming dry nitrogen deposition to be half that of measured wet deposition, this high elevation watershed receives 3Á9 kg N ha À1 . Although deposition values ̄uctuated with precipitation, measured stream nitrogen outputs were less variable. Of the total N input to the watershed (3Á9 kg N ha À1 wet plus dry deposition), 49% of the total N input was immobilized. Stream losses were 2Á0 kg N ha À1 (1125 kg measured dissolved inorganic N in 1992, 1±2 kg calculated dissolved organic N, plus an average of 203 kg algal N from the entire 660 ha watershed). Tundra and aquatic algae were the largest reservoirs for incoming N, at approximately 18% and 15% of the total 2574 kg N deposition, respectively. Rocky areas and forest stored the remaining 11% and 5%, respectively. Fully 80% of N losses from the watershed came from the 68% of LVWS that is alpine.

Who reads Nitrogen Fluxes in a High Elevation Colorado Rocky Mountain Basin?

Author

JILL S. BARON; DONALD H. CAMPBELL

Publisher

John Wiley and Sons; Wiley (John Wiley & Sons); John Wiley & Sons Inc.; Wiley (ISSN 0885-6087)

Published

1997

Language

EN

Field

Environmental Science (Physical Sciences)