Articles | Volume 20, issue 9
Research article
14 Sep 2016
Research article |  | 14 Sep 2016

The influence of riparian evapotranspiration on stream hydrology and nitrogen retention in a subhumid Mediterranean catchment

Anna Lupon, Susana Bernal, Sílvia Poblador, Eugènia Martí, and Francesc Sabater

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Cited articles

Aguilar, C., Herrero, J., and Polo, M. J.: Topographic effects on solar radiation distribution in mountainous watersheds and their influence on reference evapotranspiration estimates at watershed scale, Hydrol. Earth Syst. Sci., 14, 2479–2494,, 2010.
Àvila, A. and Rodà, F.: Changes in atmospheric deposition and streamwater chemistry over 25 years in undisturbed catchments in a Mediterranean mountain environment, Sci. Total Environ., 434, 18–27, 2012.
Àvila, A., Neal, C., and Terradas, J.: Climate change implications for streamflow and streamwater, J. Hydrol., 177, 99–116, 1996.
Baethgen, W. and Alley, M.: A manual colorimetric procedure for ammonium nitrogen in soil and plant Kjeldahl digests, Commun. Soil Sci. Plant Anal., 20, 961–969, 1989.
Bernal, S. and Sabater, F.: Changes in discharge and solute dynamics between hillslope and valley-bottom intermittent streams, Hydrol. Earth Syst. Sci., 16, 1595–1605,, 2012.
Short summary
The influence of riparian evapotranspiration (ET) on stream hydrology and chemistry is poorly understood. We investigated temporal changes in riparian ET, stream discharge and nutrient chemistry along a Mediterranean catchment. Despite being a small component of annual water budgets (4.5 %), our results highlight that riparian ET drives stream and groundwater hydrology in Mediterranean catchments and, further, question the potential of the riparian zone as a natural filter of nitrogen loads.