since 2005: Scientist at the Thünen-Institute of Sea Fisheries (TI)
2002 – 2005: Scientist at the Institute of Hydrobiology and Fisheries, Hamburg University.Zooplankton ecology. Method development: „Video Plankton Recorder“ for in situ analyses of plankton distributions
2001 – 2002: Oceanography Faculty and Chief Scientist for a ‘Semester at Sea’ at the Sea Education Association, Woods Hole, USA (www.sea.edu).
1999, 2000 – 2001: PostDoc, Woods Hole Oceanographic Institution, USA.U.S. GLOBEC N.W. Atlantic/Georges Bank Program. Zooplankon ecology: Shipboard and laboratory experiments on predation; functional responses of feeding rates
1999 – 2000: PostDoc, Kristineberg Marine Research Station (Gothenburg University and Royal Swedish Academy of Sciences), Sweden. Zooplankton feeding ecology and behaviour
1996 – 1999: PostDoc, Woods Hole Oceanographic Institution, USA. Fellowships through the German Academic Exchange Service DAAD and the Seaver Foundation. Zooplankton behavior and physiology; adaptation to extreme environments in deep-sea copepods
1992 – 1996: PhD research at the University of Technology Dresden; PhD thesis. Zooplankton predator-prey interactions; population dynamics; vertical migration behaviour; morphological defences against predation; physiological adaptation to low-oxygen environments
1990 – 1992: Scientist at the Max-Planck-Institute (MPI) for Limnology in Plön
1989 – 1990: Masters thesis (Diplomarbeit) at the MPI in Plön, funded through the Max-Planck-Society
1984 – 1989: Studies at the University of Kaiserslautern and the Christian-Albrechts-University in Kiel.