Forest make respectively.35 In Slovakia, there are three lar Zahorie covers valuable natural ecosystems of the Morava River, and two Ramsar local vium of the Rudava River and the lower part of the Morava River (see the separate assessment). Erosion and flooding have mostly had a local impact, with little transboundary effect. Discharges of industrial wastewaters (metal, chemical and food processing industries) have a more moderate impact, as do old sites contaminated through groundwater pollution.