Abstract
The river Ebro watershed is highly diverse, including high mountain sub-watersheds (Pyrenees) flowing on siliceous material to slow flow meandering areas in the middle reach and canyon type channel at the lower part of the main Ebro River. The large depression at the middle part of the watershed, draining a calcareous gypsum soil, determines high conductivity values of the river water. The geography of the river also determines a large range of climatic conditions from the Atlantic climate type to the semi-arid Mediterranean climate. At the same time, vegetation is also highly diverse including boreal species and Mediterranean species. However, the biogeochemical characteristics of the river water are highly influenced by anthropogenic activities. The main effects are those due to discharge regulation (i.e., the construction of the large reservoirs) and agriculture (determining increases in nitrate concentration).
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Acknowledgments
The manuscript was partially funded by Consolider-Ingenio SCARCE (CSD2009-00065). The Confederación Hidrográfica del Ebro (CHE) provided long term physical and chemical data.
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Romaní, A.M., Sabater, S., Muñoz, I. (2010). The Physical Framework and Historic Human Influences in the Ebro River. In: Barceló, D., Petrovic, M. (eds) The Ebro River Basin. The Handbook of Environmental Chemistry(), vol 13. Springer, Berlin, Heidelberg. https://doi.org/10.1007/698_2010_66
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