Figure 3.

Map evidencing the degree of salinization of Spanish rivers. Light blue lines depict not salinized river reaches, yellow lines, slightly salinized river reaches; orange lines, moderately salinized river reaches; red lines, heavily salinized river reaches and black lines, extremely salinized river reaches. Grey lines represent river reaches in river typologies that were not considered in the analysis owing to the lack of water conductivity measures in river reaches in good ecological status.