Articles | Volume 20, issue 2
https://doi.org/10.5194/hess-20-843-2016
https://doi.org/10.5194/hess-20-843-2016
Research article
 | 
23 Feb 2016
Research article |  | 23 Feb 2016

Nitrate sinks and sources as controls of spatio-temporal water quality dynamics in an agricultural headwater catchment

Tobias Schuetz, Chantal Gascuel-Odoux, Patrick Durand, and Markus Weiler

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Short summary
We quantify the spatio-temporal impact of distinct nitrate sinks and sources on stream network nitrate dynamics in an agricultural headwater. By applying a data-driven modelling approach, we are able to fully distinguish between mixing and dilution processes, and biogeochemical in-stream removal processes along the stream network. In-stream nitrate removal is estimated by applying a novel transfer coefficient based on energy availability.