By A. M. Romaní, S. Sabater, I. Muñoz (auth.), Damià Barceló, Mira Petrovic (eds.)

The Ebro is a regular Mediterranean river characterised by way of seasonal low flows and severe flush results, with vital agricultural and commercial job that has brought on heavy infection difficulties. This quantity bargains with soil-sediment-groundwater similar concerns within the Ebro river basin and summarizes the implications generated in the ecu Union-funded undertaking AquaTerra. the next issues are highlighted: Hydrology and sediment delivery and their adjustments as a result of weather swap, aquatic and riparian biodiversity within the Ebro watershed, incidence and distribution of quite a lot of precedence and rising contaminants, results of chemical toxins on biota and integration of weather swap eventualities with numerous facets of the Ebro’s hydrology and power affects of weather switch on pollution.

The basic target of the e-book is to put the basis for a greater figuring out of the habit of environmental pollution and their fluxes with admire to weather and land use changes.

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The Ebro River Basin

The Ebro is a customary Mediterranean river characterised through seasonal low flows and severe flush results, with very important agricultural and business task that has triggered heavy illness difficulties. This quantity bargains with soil-sediment-groundwater comparable matters within the Ebro river basin and summarizes the consequences generated in the eu Union-funded venture AquaTerra.

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They attributed runoff reduction to afforestation that has massively occurred in the Pyrenees during the second half of the century. Batalla et al. J. Batalla and D. Vericat 1 ! F ! e. negative values indicate an inversion of the flow regime). The index is as follows: Fpre;post = cov(x,y)/(sx  sy), where x and y represent the pre and post-dam average values for the analysed monthly data set. The correlation coefficient index varied greatly. 99. 42). Figure 4 shows some examples of monthly changes due to dam operation in the Ebro basin and a summary of the results.

32 5 Sediment Transport . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Sediment Yield . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Sediment Load in the Lower Ebro . . . . . . . . . . . . . . . . . . . . . . . . . . 37 6 Summary and Final Remarks . . . . . . . . . . . . . . . . .

Reduction between 5 and 70%), while in the northern and Atlantic zones only 40% of rivers showed significant reduction. Although there is a certain degree of variability between periods and regions, there is no statistical evidence that rainfall decreased during the twentieth century in any of the regions of the Ebro basin [39]; in general, annual oscillations are smaller than 1% and they are compensated between decades and regions. e. e. e. agriculture is generally pointed out as the main source of water losses).

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