Working paper for the Danube River Basin Assessment of the restoration potential along the Danube and main tributaries Vienna, July 2010 For further information please contact: Dr. Orieta Hulea WWF International Danube-Carpathian Programme Bucharest Office Str. Ioan Caragea Vodă, nr. 26, Corp A, sector 1, cod 010537, Bucureşti, Romania Tel: 021 317 49 96 Email:
[email protected] Website: www.panda.org/dcpo Dr. Ulrich Schwarz FLUVIUS Hetzgasse 22/7 A-1030 Vienna Tel.: +43 1 943 2099 Email:
[email protected] Website: www.fluvius.eu WWF’s mission is to stop the degradation of the planet's natural environment and to build a future in which humans live in harmony with nature, by: - conserving the world's biological diversity - ensuring that the use of renewable natural resources is sustainable - promoting the reduction of pollution and wasteful consumption. This document has been produced by: Ulrich Schwarz, FLUVIUS We acknowledge the financial support from WWF DCPO. Cover photo: Danube River near Calarasi/Silistra with large agricultural polders (photo credit: GoogleEarth 2010) ________________________________________________________________________________ 1 Assessment of the restoration potential along the Danube and main tributaries Preface: Over the last century, floodplains of the Danube and its tributaries were subject to major human interventions which caused significant changes in the hydromorphology of the river-floodplain ecosystem and losses of natural values and processes. The reduction and degradation of floodplains causes the loss of large water retention areas that originally mitigated flood risks, the loss of functional wetlands and their resources and services they typically provide, e.g. groundwater replenishment, nutrient reduction, water purification and the loss of other riparian ecosystems critical for the conservation of key species and habitats (in particular pioneer habitats and soft- and hardwood forests).