Born 1957 1984 Diploma University of Göttingen 1991 PhD University of Bochum 1998 Habilitation University of Zürich Professor for Plant Ecology and Geobotany in Marburg since 1999
Population biology of rare species
• Population biology of tropical understorey herbs • The ecology of hemiparasites • Perception of plant biodiversity • Population biology of invasive plants • Land use and biodiversity of mountain grasslands • The biology of bumblebees
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