Nutrient sources and dynamics in a mediterranean fluvial regime (Ebro river, NE Spain) and their implications for water management

Improvements in urban and industrial wastewater treatment facilities, land use planning and restoration of river-side wetlands, seem to be adequate policies for the improvement of the nutrient water quality in the studied sector of the Ebro River. Flow and temperature seasonality related to Mediterranean fluvial regime imposes significant limitations to nutrient PS in order to accomplish the combined approach proposed in European Water Framework Directive (WFD), based upon Emission Limit Values (ELV) and Environmental Quality Standards (EQS).