• Ecology of the agricultural landscape (set aside, ecological compensation areas, renewable resource plants);
  • Ecology of invasive species, biological control of pests and weeds (e.g. projects on slugs, Cirsium arvense, Heracleum mantegazzianum, Impatiens glandulifera), impact and risk assessment protocols, early warning system;
  • Ecology and non-target-effects of transgenic plants (oilseed rape, corn, wheat);
  • Ecology of spiders (biochemistry and ecology of spider venom, macroecology of spiders, European spider identification key, spider systematics, barcoding, World Spider Catalog).
  • Virtual Institute of Spider Taxonomic Research.
Master in Ecology (Diploma), University of Marburg, Germany
PhD, University of Marburg, Germany
Visiting scientist, Smithsonian Tropical Research Institute, Panama
Habilitation in Zoology, University of Marburg, Germany
1985 - 1988
Assistant professor, Institute of Zoology, University of Regensburg, Germany
since 1988
Full professor for ecology at the Institute of Ecology and Evolution, University of Bern, Switzerland