1. Institute of Landscape Hydrology; Leibniz Centre for Agricultural, Landscape Research; Eberswalder Str. 84 D-15374 Müncheberg Germany
2. Dep. of Soil Science and Soil Physics; Institute of GeoEcology, Technische Universität Braunschweig; D-38106 Braunschweig Germany
3. UMS GmbH; Gmunder Str. 37 D-81379 München Germany