Articles | Volume 27, issue 6
https://doi.org/10.5194/hess-27-1261-2023
https://doi.org/10.5194/hess-27-1261-2023
Research article
 | 
22 Mar 2023
Research article |  | 22 Mar 2023

Seasonal variation and release of soluble reactive phosphorus in an agricultural upland headwater in central Germany

Michael Rode, Jörg Tittel, Frido Reinstorf, Michael Schubert, Kay Knöller, Benjamin Gilfedder, Florian Merensky-Pöhlein, and Andreas Musolff

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Latest update: 20 Nov 2024
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Short summary
Agricultural catchments show elevated phosphorus (P) concentrations during summer low flow. In an agricultural stream, we found that phosphorus in groundwater was a major source of stream water phosphorus during low flow, and stream sediments derived from farmland are unlikely to have increased stream phosphorus concentrations during low water. We found no evidence that riparian wetlands contributed to soluble reactive (SR) P loads. Agricultural phosphorus was largely buffered in the soil zone.