Current Professional Memberships and Committees
- Advisory Board "C-DEBI" Center for Dark Biosphere (NSF Science and Technology Center, USC LA, USA)
- Scientific Steering Committee Deep Life Directorate of the Deep Carbon Observatory (Sloan Foundation, Carnegie USA)
- Advisory Board National History Museum Berlin
- Advisory Board Senckenberg Museum
- Advisory Board GeoBioCenter Munich (LMU)
- Advisory Board Institute for Polar Research IPEV (France)
- External Scientific Member of the Max Planck Society
- Science Council of Germany (Wissenschaftsrat)
- Advisory Board Diversitas D
- National Committee for Global Change Research
- Commission of the Senate for Oceanography (DFG, Germany)
- Head of the Scientific Committee of the Annette-Barthelt-Price for Marine Research
- Advisory Board of the Excellence Cluster "Future Ocean" University Kiel
- Science Committee NIOZ
- Head of the Advisory Board of the Institute for Baltic Sea Research
- Monaco Blue Initiative (Prince Albert II of Monaco Foundation)
- Membership American Society of Microbiology
- Membership American Society for Limnology and Oceanography
- Membership European Geosciences Union
- Membership American Geophysical Union
- Membership VAAM/FEMS
- Membership ISME
Past Professional Memberships and Committees
- Advisory board “International Census of Marine Microbial Life” ICOMM
- Steering Committee ChEss (Biogeography of Chemosynthetic Ecosystems), Census of Marine Life
- Scientific Council of CNRS Section „Planete et Universe“ (France)
- Scientific Committee of IFREMER (France)
- Scientific Committee DIVERSITAS International (UNESCO, ESSP)
Professional Services
- Editorial Boards of the ISME Journal (Nature Publishing Group), Applied and Environmental Microbiology, Geobiology, Aquatic Microbial Ecology, Marine Biology Research (new journal, previously SARSIA and OPHELIA), Environmental Microbiology
- Reviewer for Journals Science, Nature, MEPS, Limnology and Oceanography, Deep Sea Research I + II, Marine Biology, Marine Geology, Progress in Oceanography, Journal of Sea Research, Organic Geochemistry, AEM, Microbial Ecology, Springer Verlag,
- Reviewer for funding agencies: DFG, BMBF, ERC, NSF, NOAA, NWO, NERC, ANR, CNRS, SNSF, FWO