Articles | Volume 25, issue 5
Hydrol. Earth Syst. Sci., 25, 2491–2511, 2021
https://doi.org/10.5194/hess-25-2491-2021
Hydrol. Earth Syst. Sci., 25, 2491–2511, 2021
https://doi.org/10.5194/hess-25-2491-2021

Research article 18 May 2021

Research article | 18 May 2021

Spatio-temporal controls of C–N–P dynamics across headwater catchments of a temperate agricultural region from public data analysis

Stella Guillemot et al.

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Cited articles

Abbott, B. W., Gruau, G., Zarnetske, J. P., Moatar, F., Barbe, L., Thomas, Z., Fovet, O., Kolbe, T., Gu, S., Pierson-Wickmann, A.-C., Davy, P., and Pinay, G.: Unexpected spatial stability of water chemistry in headwater stream networks, Ecol. Lett., 21, 296–308, https://doi.org/10.1111/ele.12897, 2018a. 
Abbott, B. W., Moatar, F., Gauthier, O., Fovet, O., Antoine, V., and Ragueneau, O.: Trends and seasonality of river nutrients in agricultural catchments: 18 years of weekly citizen science in France, Sci. Total Environ., 624, 845–858, https://doi.org/10.1016/j.scitotenv.2017.12.176, 2018b. 
Ågren, A., Buffam, I., Jansson, M., and Laudon, H.: Importance of seasonality and small streams for the landscape regulation of dissolved organic carbon export, J. Geophys. Res-Biogeo., 112, G03003, https://doi.org/10.1029/2006JG000381, 2007. 
Alexander, R. B., Boyer, E. W., Smith, R. A., Schwarz, G. E., and Moore, R. B.: The Role of Headwater Streams in Downstream Water Quality, J. Am. Water Resour. Assoc., 43, 41–59, https://doi.org/10.1111/j.1752-1688.2007.00005.x, 2007. 
Andersson, J.-O. and Nyberg, L.: Spatial variation of wetlands and flux of dissolved organic carbon in boreal headwater streams, Hydrol. Process., 22, 1965–1975, https://doi.org/10.1002/hyp.6779, 2008. 
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Short summary
This study investigates the drivers of spatial variations in stream water quality in poorly studied headwater catchments and includes multiple elements involved in major water quality issues, such as eutrophication. We used a regional public dataset of monthly stream water concentrations monitored for 10 years over 185 agricultural catchments. We found a spatial and seasonal opposition between carbon and nitrogen concentrations, while phosphorus concentrations showed another spatial pattern.