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5.6.     Relationships of ecological status or potential and pressures in rivers with population density and proportion of arable land

When population density and proportion of arable land increases, the ecological status or potential of river water bodies clearly deteriorates and the pressure increases, both for diffuse pollution, as well as for hydromorphological pressures (figure 5.6). The ecological status or potential changes from ca. 40% to ca. 80% of classified river water bodies in less than good status when population density and proportion of arable land increases from the lowest to the highest category. This pattern is a clear indication that population density and proportion of arable land are two major drivers responsible for the pressures affecting the ecological status or potential of European rivers.