Research Interests

• Marine carbon pumps
• Biogeochemical feedback processes and climate change
• Stoichiometry of the biological pump
• Ocean dynamics and marine productivity
• Large scale (global) budgets of ocean carbon fluxes

Education and Employment

• since 2005   Research Scientist at IFM-GEOMAR, now GEOMAR | Helmholtz Centre for Ocean Research Kiel, Germany
• 2004  Visiting Research Scientist at SFB 460 (Christian-Abrechts-University of Kiel) 
• 2003  CNRS Visiting Research Scientist at Laboratoire d'Etudes en Géophysique et Océanographie Spatiales, LEGOS, Toulouse, France
• 2001 – 2003  Research Scientist at Marum, Bremen University, Germany
• 2000  Visiting Professor at Université Paul Sabatier, Toulouse, France
• 2000 Research Scientist at IfM Kiel, Germany
• 1999 – 2000  Research Scientist at Institute for Baltic Sea Research, Warnemuende, Germany
• 1992 – 1999  Research Scientist at IfM Kiel, Planktology Department, Germany
  
• 1989 – 1991  PhD Student at IfM and Christian-Albrechts-University of Kiel, Germany
  
• 1987 – 1989  Community Service, Environmental Protection Agency, Towns Office, Kiel, Germany
• 1986  Dpiloma in Biological Oceanography, Benthos Department, IfM Kiel, Germany