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Marti, Eugenia
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Riparian zones can strongly influence the exchange of nutrients between streams and their watersheds. Most riparian studies have been done in mesic watersheds, which differ significantly from arid-land watersheds hydrologically. The goals of our work were to determine the strength and direction of hydrologic linkages between stream and riparian zone, and to estimate the extent of uptake of streamwater N by riparian trees in Sycamore Creek, a Sonoran Desert stream. Br? and 15NH4+ were added simultaneously to the surface stream to trace water and N from stream to riparian zone. Br? concentrations in riparian wells installed downstream of the release point increased during the addition, demonstrating a strong hydrologic...
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