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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 - 65711 | |
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 in prep.
Oral presentations
Poster presentations
Awards
Kellermann, M., 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. in prep.
Kellermann, M., 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
Kellermann, M., 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. Abstract. Gordon Research Conference 2008
2008 MARUM research prize for master thesis: Polar lipids as marker for the symbiosis between bacteria and mussels
02/2009
12/2008
03/2004
R/V Maria S. Merian -> 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 -> 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)