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    The fluxes and transformations of nitrogen were investigated from 1985 through 1987 at the Emerald Lake watershed, a 120 ha high-elevation catchment located in the southern Sierra Nevada, California, USA. Up to 90% of annual wet deposition of N was stored in the seasonal snowpack; NO3- and NH4+ were released from storage in the form of an ionic pulse, where the first fraction of meltwater draining from the snowpack had concentrations of NO3- and NH4+ as high as 28 μeq L-1 compared to bulk concen…Read more