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This study presents a comprehensive analysis ofnitrogen (N) cycling in a second-order forestedstream in southern Michigan that has moderatelyhigh concentrations of ammonium (mean,16 μg N/L) and nitrate (17 μg N/L). Awhole-stream 15NH4+ addition wasperformed for 6 weeks in June and July, and thetracer 15N was measured downstream inammonium, nitrate, and detrital and livingbiomass. Ancillary measurements...
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