Source characterization and biogeochemical consequences of wastewater and agricultural C, N, and P inputs to the Sacramento-San Joaquin Delta region

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This project aimed to characterize the sources of carbon, nitrogen, phosphorous and sulfur compounds from wastewater treatment plant and agricultural discharge in the region. Stable isotope measurement provides elemental signatures that can be used to trace compounds to their sources. Use of this methodology requires that researchers first characterize the stable isotope composition of sources—or fingerprint the suspects.

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