Soil contains aged organic carbon that can be hundreds or thousands of years old. Human disturbance in small and large watersheds is mobilizing some of this fossil carbon from soils to aquatic systems.
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CHRIS EVANS
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Evans, C. Old carbon mobilized. Nature Geosci 8, 85–86 (2015). https://doi.org/10.1038/ngeo2334
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DOI: https://doi.org/10.1038/ngeo2334
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