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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Cited articles

Ackermann, A.: Simulation des Austrags von gelöstem organischen Kohlenstoff aus landwirtschaftlich genutzten Mineralböden (in German), Dissertation, Martin Lutter University, Halle, p. 181, https://nbn-resolving.org/urn:nbn:de:gbv:3:2-80448 (last access: 30 January 2023), 2016. 
Adyasari, D., Dimova, N. T., Dulai, H., Gilfedder, B. S., Cartwright, I., McKenzie, T., and Fuleky, P.: Radon-222 as a groundwater discharge tracer to surface waters, Earth-Sci. Rev., 104321, https://doi.org/10.1016/j.earscirev.2023.104321, 2023. 
Anis, M. R. and Rode, M.: Effect of climate change on overland flow generation: a case study in central Germany, Hydrol. Process., 29, 2478–2490, 2015. 
Bechmann, M., Deelstra, J., Stalnacke, P., Eggestad, H. O., Oygarden, L., and Pengerud, A.: Monitoring catchment scale agricultural pollution in Norway: policy instruments, implementation of mitigation methods and trends in nutrient and sediment losses, Environ. Sci. Pol., 11, 102–114, 2008. 
Behrendt, H. and Boekhold, A.: Phosphorus Saturation In Soils And Groundwaters, Land Degrad. Rehabil., 4, 233–243, 1993. 
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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.
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