Prof. Dr. Walter Michaelis
Research Interests
Chemical structural investigations of complex high molecular weight organic compounds in the geosphere,
Biomarker - development and applications, Biogeochemical cycling,
Isotope Geochemistry, Environmental Geochemistry,
Natural products of pharmaceutical interest in marine organisms,
Sources, sinks, and isotopic composition of halogenated volatile organic compounds
CV
Present Position
Professor of Organic Geochemistry and Environmental Geochemistry
Institut für Geologie, Universität Hamburg
Educational Background
1972 - 1974: Postdoctoral Fellow, Organic Geochemistry, Université Louis Pasteur Strasbourg, France, with Prof. G. Ourisson. Structural characterization of kerogen by selective chemical degradation.
1968 - 1971: PhD Organic Chemistry, Universität Göttingen (Advisors P. Boldt and H. Brockmann) Kinetic study of radical chain reactions: halogenated dicyanomethanes.
1966 - 1968: M.S. (Diplom) Organic Chemistry, Universität Göttingen, Natural product synthesis.
1967: B.A. in Chemistry, Universitaet Göttingen
Professional Experience
present: Professor of Organic Geochemistry and Environmental Geochemistry, Universität Hamburg
1980: Assistant Professor, Organic Geochemistry Department, Institut für Biogeochemie und Meereschemie, Universität Hamburg
1979: Institut de Chimie, Université Louis Pasteur, French-German exchange program of professors
1976-1979: Staff research scientist, Geologisch-Palaeontologisches Institut und Museum, Universitaet Hamburg
1974-1976: Research chemist in the industry, BASF AG, Ludwigshafen
1972-1974: Postdoctoral Fellow, Insitut de Chimie, Université Louis Pasteur, Strasbourg
Professional Affiliations
Member, Geochemical Society, USA
Member, Gesellschaft Deutscher Chemiker, German Chemical Society
Member, European Association of OrganicGeochemists
Academic Services
University of Hamburg
Faculty Council (1986 – 2008)
Head of Faculty Financial Council
Faculty Council Teaching Committee
Director of the Institute of Biogeochemistry and Marine Chemistry
Reviewer
Proposal reviews for N.S.F. (USA), NERC (Great Britain), CNRS (France), Petroleum Research Fund, Netherlands Organization for Scientific Results (Netherlands), German Research Foundation (DFG, Germany); manuscript reviews for Science, Nature, Geochim. Cosmochim. Acta, Marine Chemistry, Biogeochemistry, Organic Geochemistry, Environ. Sci. and Technol.
International Symposium Speaker
Numerous presentations and invited lectures presented at the International Meeting on Organic Geochemistry. American Chemical Society National Meetings; Association of Geochemistry, Environmental Analytical Chemistry; Gordon Research Conferences - Conference on Organic Geochemistry 1986, 1988 (speaker), 1990, 1994, 1996 (session organizer), 1998, 2000, 2002 (speaker), 2004; Goldschmidt Conference 2002 (speaker, session organizer).
Oceanic Cruises
Chief Scientist on cruises with RV Valdivia, RV Sonne, RV PROF. Logachev, Co-Chief Scientist or participant on several cruises with RV Chain, RV Meteor, and RV Sonne.
Publikationen
Papers in Peer-Reviewed Journals and Books
2014
Bahlmann E., Weinberg I., Lavric J. V., Eckhard T., Michaelis W., Santos R., and Seifert R. (2014) Tidal controls on trace gas dynamics in a seagrass meadow of the Ria Formosa lagoon (southern Portugal). Biogeosciences Discussions 11,10571-10603.
I Weinberg I., E Bahlmann E., T Eckhardt T., W Michaelis W. and Seifert R. (2014) A halocarbon survey from a seagrass dominated subtropical lagoon, Ria Formosa (Portugal): flux pattern and isotopic composition. Biogeosciences Discussions 11, 10605-10646.
2013
Bahlmann E., Weinberg I., Eckhardt T., Michaelis W., Seifert R. (2013) Longterm and seasonal variation in the isotopic composition of tropospheric CFC-12 and CFC-11. Geophysical Research Abstracts 15, EGU2013-9382
Bahlmann E., Weinberg I., Eckhardt T., Seifert R. and Michaelis W. (2013) Inferring marine sinks and sources of monohalomethanes from their carbon stable isotope composition. Geophysical Research Abstracts 15, EGU2013-9440, 201.
Bertram S., Blumenberg M., Michaelis W., Siegert M., Krüger M. and Seifert R. (2013) Methanogenic capabilities of ANME-archaea deduced from (13) C-labelling approaches. Environmental Microbiology 15, 2384-2393.
Weinberg I., Bahlmann E., Michaelis W. and Seifert R. (2013) Determination of fluxes and isotopic composition of halocarbons from seagrass meadows using a dynamic flux chamber. Atmospheric Environment 73, 34-40.
2011
Bahlmann E., Weinberg I., Seifert R., Tubbesing C. and Michaelis W. (2011) A high volume sampling system for isotope determination of volatile halocarbons and hydrocarbons. Atmospheric Measurement Techniques 4, 2073-2086.
Vasconcellos S. P., Dellagnezze., B. M., Wieland A., Klock J.-H., Santos Neto E. V., Marsaioli A. J., Oliveira V. M. and Michaelis W. (2011) The potential for hydrocarbon biodegradation and production of extracellular polymeric substances by aerobic bacteria isolated from a Brazilian petroleum reservoir. Journal of Microbiology and Biotechnology 27, 1513-1518.