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- Organic Geochemistry
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- Hinrichs Lab - MARUM - Fellow S. Bühring
Hinrichs Lab - MARUM - Fellow S. Bühring
MARUM - Fellow Dr. Solveig Bühring
| Duration: | June 2004 - January 2005, March 2007 - June 2007, January 2008 - June 2010 (part time) |
| Funding: | Deutsche Forschungsgemeinschaft (DFG) DFG-Research Center/Excellence Cluster "The Ocean in the Earth System" (MARUM) |
| Principal Investigator(s): | Solveig Bühring |
| Involved scientists in the Hinrichs Lab: | Kai-Uwe Hinrichs, Florence Schubotz, Julius Lipp, Tobias Ertefai |
| Partners: | Dr. Stefan Sievert (Woods Hole Oceanographic Institution, Woods Hole, USA), Prof. Lee Krumholz and Dr. Mostafa Elshahed (University of Oklahoma, Norman, USA), Prof. Ricardo Amils (Centro de Astrobiología, Madrid, Spain), Dr. Henk Jonkers (Delft University of Technology, Delft, The Netherlands), Dr. Anja Kamp (Max-Planck-Institut für Marine Mikrobiologie, Bremen, Germany), Dr. Roy Price (MARUM/Universität Bremen) |
Abstract
Solveig Bühring dedicated her research towards a deeper understanding of microbial communities of geobiologically relevant systems. To accomplish that goal, she combined the study of lipid biomarkers with 13C-labeling approaches, which enables direct linkage of microbial identity and function.
One main area of investigation was Zodletone spring in southwestern Oklahoma (USA). The fluids of this cold (12°C) spring that are seeping through the sediment contain abundant reduced sulfur compounds and short-chain gaseous alkanes, but only traces of sulfate, exhibiting characteristics that are reminiscent of conditions that are thought to have existed in Earth’s history, in particular the late Archaean and early-to-mid Proterozoic. Research at Zodeltone addressed three major topics, i.e. (1) the phylogenetic and metabolic diversity of the Planctomycetes of the source (Elshahed et al. 2007), (2) the community composition and function of two distinct mat formations at Zodletone spring, and (3) the oxidation of methane under anaerobic conditions.
Other areas of investigation were: (a) the phototrophic community of the strongly acidic river Río Tinto in southern Spain; (b) the "Farbstreifensandwatt" at the sandy beach of St. Peter-Ording, Germany, i.e. a multilayered microbial community that was investigated in 2008 with a multi-method approach using a combination of lipid analysis/13C-labelling and microsensor measurements; and (c) the microbial community of an arsenic-rich marine shallow water hydrothermal vent system off Milos, Greek. The main goal at Milos was to investigate the microbial community using lipid biomarker analysis, characterize their geochemical habitat and to shed light onto their carbon fixation strategies.
Solveig Bühring dedicated her research towards a deeper understanding of microbial communities of geobiologically relevant systems. To accomplish that goal, she combined the study of lipid biomarkers with 13C-labeling approaches, which enables direct linkage of microbial identity and function.
One main area of investigation was Zodletone spring in southwestern Oklahoma (USA). The fluids of this cold (12°C) spring that are seeping through the sediment contain abundant reduced sulfur compounds and short-chain gaseous alkanes, but only traces of sulfate, exhibiting characteristics that are reminiscent of conditions that are thought to have existed in Earth’s history, in particular the late Archaean and early-to-mid Proterozoic. Research at Zodeltone addressed three major topics, i.e. (1) the phylogenetic and metabolic diversity of the Planctomycetes of the source (Elshahed et al. 2007), (2) the community composition and function of two distinct mat formations at Zodletone spring, and (3) the oxidation of methane under anaerobic conditions.
Other areas of investigation were: (a) the phototrophic community of the strongly acidic river Río Tinto in southern Spain; (b) the "Farbstreifensandwatt" at the sandy beach of St. Peter-Ording, Germany, i.e. a multilayered microbial community that was investigated in 2008 with a multi-method approach using a combination of lipid analysis/13C-labelling and microsensor measurements; and (c) the microbial community of an arsenic-rich marine shallow water hydrothermal vent system off Milos, Greek. The main goal at Milos was to investigate the microbial community using lipid biomarker analysis, characterize their geochemical habitat and to shed light onto their carbon fixation strategies.