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M.Sc. Matthias Kellermann
Name: | M.Sc. Matthias Kellermann | |
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Department: | Org. Geochemistry group | |
Job: | PhD student | |
Room: | ||
Phone: | +49 421 218 - 65742 | |
Fax: | +49 421 218 - 65715 | |
E-Mail: |
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Research interest
- Organic geochemistry
- Biogeochemistry
- Biomarker Research
- Transfer of energy from the geosphere to the biosphere at hydrothermal vents and cold seeps
- Symbiosis between eukaryotes and prokaryotes at hydrothermal vents and cold seeps
- Microbial Ecology of the Deep Sea
- Analytical method development
PhD-thesis
The outline of the PhD is to analyze organic samples (i.e. dissolved and particulate organic compounds, microbial biomass, and endosymbiotic bacteria within organisms) taken from submarine hydrothermal systems which represent the deepest, hottest and harshest of Earth’s environments known to date. Valuable and challenging information on ecosystems that function independently of photosynthesis and where organisms are living close to the limit of life will shed light into the interaction between geochemical and biological processes in the deep ocean and seafloor sediments. A wider knowledge of Earth’s submarine biosphere including high productive hydrothermal sites is of potential importance. Furthermore, investigations of hydrothermal vent community structures might contribute to our knowledge about how life may have originated on Earth.
Master-thesis
Lipid Biomarkers of Thiotrophic and Methanotrophic Symbionts in different Bathymodiolus mussel species
In my Master thesis I investigated the ecology and biogeochemistry of endosymbiotic bacteria (i.e., thiotrophic and methanotrophic bacteria) in seep- and vent- mussels. The symbiont-containing gill and symbiont-free foot tissue of B. childressi and B. brooksi from the Gulf of Mexico (GoM) and B. cf. thermophilus from the Pacific Antarctic Ridge (PAR) were analyzed with different lipid analysis methodologies. Intact polar lipids (IPLs) mainly provided information on general compositional pattern; bacteriohopanepolyols (BHPs) indicate the input from bacterial sources and organism-specific biomarker (apolar lipids: FAs and sterol) and their isotopic composition demonstrated the symbiotic relationship of sulfide- and methane-oxidizing bacteria within the host organism.
The IPL- and BHP- biomarker analysis was conducted with HPLC/MSn whereas the apolar biomarkers were analyzed with GC/MS and GC-irMS.
Curriculum vitae
| since 05/2008 | PhD in the Organic Geochemistry Group, MARUM, Germany |
| 21/12/2007 | Joint Master’s Degree in the Earth Science from the University of Waikato, New Zealand & University of Bremen, Germany |
| 11/2006 - 12/2007 | 2nd year of the German Master program “Geowissenschaften”, University of Bremen, Germany; incl. Master-Thesis (title: “Lipid Biomarkers of Thiotrophic and Methanotrophic Symbionts in different Bathymodiolus mussel species: Chemical and Isotopic Analysis”) |
| 02/2005 - 10/2006 | 1st year of the German Master program “Geowissenschaften”, University of Waikato, New Zealand |
| 11/10/2005 | Bachelor of Science Degree “Geowissenschaften”, University of Bremen, Germany |
| 10/2002 - 09/2005 | Undergraduate studies of the German Bachelor “Geowissenschaften" (BSc.), University of Bremen, Germany; incl. Bachelor-Thesis (title: “Strukturelle und isotopische Analysen der freien Fettsäuren in Sedimenten von Lake Sihailongwan, China”) |
| 10/2001 - 10/2002 | Undergraduate studies of Mechanical/Electrical Engineering, University of Applied Science, Bremen, Germany |
| 21/06/2001 | High School (German – “Abitur”), KGS Weyhe-Leeste, Germany Leeste, Germany |
Publications
Publications in prep.
Oral presentations
Poster presentations
Awards
Jessen, G.L., Pantoja, S., Gutiérrez, M.A., Quiñones, R.A., González, R.R., Sellanes, J., Kellermann, M.Y., Hinrichs, K.-U., 2011. Methane in shallow cold seeps at Mocha Island off central Chile. Continental Shelf Research, 31(6), 574-581.
Holler, T., Widdel, F., Knittel, K., Amann, R., Kellermann, M.Y., Hinrichs, K.-U., Teske, A., Boetius, A., Wegener, G., 2011. Thermophilic anaerobic oxidation of methane by marine microbial consortia. ISME J.
Yoshinaga, M.Y., Kellermann, M.Y., Rossel, P.E., Schubotz, F., Lipp, J.S., Hinrichs, K.U. Systematic Fragmentation Patterns of Archaeal Intact Polar Lipids by HPLC/ESI/ITMS. RCM (accepted).
Kellermann, M.Y., Schubotz, F., Elvert, M., Lipp, J.S., Birgel, D., Mollar, X.P., Dubilier, N., Hinrichs, K.U. Polar lipids as marker for the symbiosis between bacteria and mussels. Organic Geochemistry (accepted).
Wegener, G., Bausch, M., Holler, T., Thang, N.M., Prieto-Mollar, X., Kellermann, M.Y., Hinrichs, K.U., Boetius, A. Assessing sub-seafloor microbial activity by combined stable isotope probing with deuterated water and 13C-bicarbonate. Submitted to EM.
Lin, Y.S., Heuer, V.B., Goldhammer, T., Kellermann, M.Y., Zabel, M., Hinrichs, K.U. Towards constraining H2 concentration in subseafloor sediment: a proposal for combined analysis by two distinct approaches. Geochimica et Cosmochimica Acta, (accepted).
Kellermann, M.Y., Wegener, G., Elvert, M., Yoshinaga, M.Y., Lin, Y-S., Holler, T., Prieto-Mollar, X., Hinrichs, K.U. Dual isotopic probing reveals dominant autotrophic carbon fixation in methane-rich sediments from the Guaymas Basin. Prepared for submission.
Kellermann, M.Y., Yoshinaga, M.Y., Wegener, G., Lin, Y-S., Holler, T., Hinrichs, K.U. Stable isotope probing of intact polar lipids indicates precursor role of archaeol in the biosynthesis of tetraether lipids. Prepared for submission.
Kellermann, M.Y., Elvert, M., Hinrichs, K.U. Compound- specific isotope analysis of intact polar lipids after chemical oxidation of aqueous emulsions. Prepared for submission.
Lin, Y.S, Kellermann, M.Y, Lipp, J.S, Elvert, M., Wegener, G., Holler, T., Hinrichs, K.U. Towards stable isotope probing of intact polar lipids. Prepared for submission.
Kellermann, M.Y., Yoshinaga, M.Y., Wegener, G., Lin, Y-S., Holler, T., Hinrichs, K.U. Stable isotope probing of intact polar lipids indicates precursor role of archaeol in the biosynthesis of tetraether lipids. Oral, 25th International Meeting on Organic Geochemistry. Interlaken, Switzerland, Sep 2011.
Kellermann, M.Y., Wegener, G., Elvert, M., Yoshinaga, M.Y., Lin, Y-S., Holler, T., Prieto-Mollar, X., Hinrichs, K.U. Dual isotopic probing reveals dominant autotrophic carbon fixation in methane-rich sediments from the Guaymas Basin. Oral, 8th International Symposium of Subsurface Microbiology . Garmisch-Partenkirchen, Germany, Sep 2011.
Kellermann, M.Y., Yoshinaga, M.Y., Wegener, G., Lin, Y-S., Holler, T., Hinrichs, K.U. Tracing 13C-labeled inorganic carbon into IPLs of thermophilic anaerobic methanotrophs (ANME-1) provides new insights into pathways of archaeal lipid biosynthesis. Oral, North German Meeting on Organic Geochemistry, Bremen, Germany, June 2011.
Kellermann, M.Y., Elvert, M., Mollar, X.P., Hinrichs, K.U. Direct d13C isotopic measurements of complex intact polar lipids (IPLs) determined via coupled LC/irMS. ECORD Summer School on "The Deep Subseafloor Biosphere". Bremen, 2008.
Flagan, S., Warren, W., Kellermann, M.Y., Hinrichs, K-U., Valentine, D. An Anaerobic Methane Oxidizing Microbial Mat Associated with Methane Seepage Exposed to the Deep Sea. Poster, 111th General Meeting of the American Society for Microbiology. New Orleans (LA), USA, 2011.
Kellermann, M.Y., Elvert, M., Hinrichs, K.U. Compound- specific isotope analysis of intact polar lipids after chemical oxidation of aqueous emulsions. Poster, 24th International Meeting on Organic Geochemistry. Bremen, Germany, 2009.
Kellermann, M.Y., Lipp, J.S., Schubotz, F., Elvert, M., Birgel, D., Mollar, X.P., Dubilier, N., Hinrichs, K.U. Polar lipids as marker for the symbiosis between bacteria and mussels. Poster. Gordon Research Conference. Holderness (NH), USA, 2008.
2008 MARUM research prize for master thesis: Polar lipids as marker for the symbiosis between bacteria and mussels.
12/2009
02/2009
12/2008
03/2004
R/V Atlantis (AT 15-56)-> Guaymas (Mexico) - Guaymas (Mexico);
Investigation of hydrothermal vent sides at Guaymas Basin
R/V Maria S. Merian (MSM 11/1)-> Martinique (Caribbean Sea) - Dakar (Senegal); Exploration of an isolated sediment pond (North Pond) located on the Western flank of the mid–Atlantic Ridge
R/V Atlantis (AT 15-40)-> Guaymas (Mexico) - Guaymas (Mexico);
Investigation of hydrothermal vent sides at Guaymas Basin
FS Heinke 204/1 -> Baltic Sea ("Mecklenburger Bucht"); student practical
Introduction of various methods and equipment of geophysical techniques
(e.g. Reflexion-Seismic, Side Scan, Echo Sounder, Bathymetry, Magnetic, Geothermic)