The recovery of ecologically and chemically impaired tributaries in the Podyí/Thayatal National Park
Christian Pichler-Scheder, blattfisch e.U., Wels (AT)
The Fugnitz and Kajabach brooks enter the Podyjí/Thayatal National Park loaded with impacts from upstream reaches. In the Fugnitz brook fine sediments and bacteria from manured fields are washed in during rainfall, leading to a deterioration of habitats for aquatic invertebrates. In the Kajabach brook with its more densely forested catchment area pressures are caused by fish ponds that alter the substrate conditions and release littoral species into lotic habitats. However, within the National Park the chemical and ecological situation improves markedly in both watercourses.