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Nitrogen input–output budgets for lake-containing watersheds in the Adirondack region of New York (2005)
| Venue: | Biogeochemistry |
| Citations: | 6 - 1 self |
BibTeX
@ARTICLE{Ito05nitrogeninput–output,
author = {Mari Ito and Myron J. Mitchell and Charles T. Driscoll and Karen M. Roy},
title = {Nitrogen input–output budgets for lake-containing watersheds in the Adirondack region of New York},
journal = {Biogeochemistry},
year = {2005},
pages = {283--314}
}
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Abstract
Abstract. The Adirondack region of New York is characterized by soils and surface waters that are sensitive to inputs of strong acids, receiving among the highest rates of atmospheric nitrogen (N) deposition in the United States. Atmospheric N deposition to Adirondack ecosystems may con-tribute to the acidification of soils through losses of exchangeable basic cations and the acidification of surface waters in part due to increased mobility of nitrate (NO3 ). This response is particularly evident in watersheds that exhibit ‘nitrogen saturation. ’ To evaluate the contribution of atmo-spheric N deposition to the N export and the capacity of lake-containing watersheds to remove, store, or release N, annual N input–output budgets were estimated for 52 lake-containing water-sheds in the Adirondack region from 1998 to 2000. Wet N deposition was used as the N input and the lake N discharge loss was used as the N output based on modeled hydrology and measured monthly solute concentrations. Annual outputs were also estimated for dissolved organic carbon (DOC). Wet N deposition increased from the northeast to the southwest across the region. Lake N drainage losses, which exhibited a wider range of values than wet N deposition, did not show any distinctive spatial pattern, although there was some evidence of a relationship between wet N
Keyphrases
adirondack region lake-containing watershed new york nitrogen input output budget wet deposition surface water exchangeable basic cation increased mobility adirondack ecosystem strong acid dissolved organic carbon monthly solute concentration annual output atmospheric nitrogen lake drainage loss distinctive spatial pattern lake-containing water-sheds modeled hydrology wider range annual input output budget atmospheric deposition atmo-spheric deposition lake discharge loss united state
