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Institute of Advanced Study

Water Colour: Processes Affecting Riverine Organic Carbon Concentration


Several recent studies have observed increasing trends in aquatic dissolved organic carbon (DOC), and several hypotheses have been reported that mainly focus on changes in climate, land cover and acid deposition. Here I outline further processes that can be hypothesised to affect aquatic DOC significantly, in particular regional variations in photodegradation, transfer of carbon between dissolved, colloidal and particulate forms, and the dehydration and freezing of organic matter.

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