Biogeosciences
Biogeosciences
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Articles | Volume 18, issue 16
Articles | Volume 18, issue 16
https://doi.org/10.5194/bg-18-4705-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-18-4705-2021
© Author(s) 2021. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 18, issue 16
Research article
 | 
18 Aug 2021
Research article |  | 18 Aug 2021

Diel patterns in stream nitrate concentration produced by in-stream processes

Jan Greiwe, Markus Weiler, and Jens Lange

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Short summary
We analyzed variability in diel nitrate patterns at three locations in a lowland stream. Comparison of time lags between monitoring sites with water travel time indicated that diel patterns were created by in-stream processes rather than transported downstream from an upstream point of origin. Most of the patterns (70 %) could be explained by assimilatory nitrate uptake. The remaining patterns suggest seasonally varying dominance and synchronicity of different biochemical processes.
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