- Scientific researcher University Halle, Saale, Germany, 1958-1989, Bavarian Institute Soil Management and Crop Husbandry, Munich, Germany, since 1990. Nature protection commissioner Halle District, 1967-1989. Docent University Freising, Germany, 1991-1997.
- Author: Vegetation of Mongolia, 1995, (with Arlt and Illig) Weeds, 1991, (with Schubert and Klotz) Determination of Plant Associations of Middle Germany, 1995. Contributing author: Temperate Deserts. Ecosystems of the World, volunteer 5, 1983, Ecology, 3d edition, 1991, Bioindication in Terrestrial Ecosystems, 1985, Nature Protection Management, 1991.