INTERNATIONAL HYDROLOGICAL PROGRAMME Hydrology and Limnology – Another Boundary in the Danube River Basin A contribution to the IHP Ecohydrology Project Report on the International Workshop organized by the International Association for Danube Research (IAD) and sponsored by the UNESCO Venice Office Petronell, Austria, 14-16 October 2004 Edited by J. Bloesch, D. Gutknecht and V. Iordache IHP-VI ⏐Technical Documents in Hydrology ⏐ No. 75 UNESCO, Paris, 2005