1. Abaurrea J, Asín J, Centelles A (2002) Caracterización espacio-temporal de la evolución de la precipitación anual en la Cuenca del Ebro. In: Guijarro JA, Grimalt M, Laita M, Alonso S (eds) El agua y el clima. Publicaciones de la Asociación Española de Climatología, pp 113–124
2. Aguiar FC, Ferreira MT, Moreira I (2001) Exotic and native vegetation establishment following channelization of a Western Iberian River. Regulated Rivers: Research and Management 17:509–526
3. Barsoum N, Hughes FMR (1998) Regeneration response of black poplar to changing river levels. In: Wheater WH, Kirkby C, Harding R, Gilvear D (eds) Hydrology in a changing environment, vol 1. British Hydrological Society and Wiley’s, Chichester, UK, pp 397–412
4. Barsoum N, Muller E, Skot L (2004) Variations in levels of clonality among Populus nigra L. stands of different ages. Evolutionary Ecology 18:601–624
5. Batalla RJ, Gómez CM, Kondolf GM (2004) Reservoir-induced hydrological changes in the Ebro River basin (NE Spain). Journal of Hydrology 290:117–136