I am interested in the research fields of Aquatic Biogeochemistry, Stable Isotope Biogeochemistry, organic geochemistry, microbial ecology and (paleo-)limnology.

• 2019-2023: Head of Department, Department of Environmental Science, University of Basel
• 2017-2023: Board of directors (Departementsleitung), Department of Environmental Science, University of Basel 
• Since 2017: Full Professor, Department for Environmental Science, University of Basel
• 2018: Cox Visiting Professor, Department of Earth Systems Science, Stanford University
• 2014-2017: Dean of Research at the Faculty of Science at the University of Basel
• 2010-2016: Associate Professor, Department for Environmental Science, University of Basel
• 2007-2010: Assistant Professor (tenure-track), Department for Environmental Science, University of Basel
• 2004-2007: Assistant Professor (tenure-track), Department of Earth and Atmospheric Science, Université de Québec à Montréal, Center for Research in Geochemistry and Geodynamics (GEOTOP-UQAMMcGill), Montréal, Canada.
• 2003 - 2004: Postdoctoral Research Associate, Department of Geosciences, Princeton University, Princeton, USA.
• 2002: Ph.D. in Environmental Geochemistry/Stable Isotope Geochemistry, Department of Earth Sciences, Swiss Federal Institute of Technology (ETH) Zürich, Switzerland.

Bartosiewicz, M., A. Przytulska, A. Birkholz, H. Niemann, J. Zopfi, M. F. Lehmann (2024). Controls and significance of priming effects in lake sediments.Global Change Biology;  https://doi.org/10.1111/gcb.17076

deCarvalho, C.F.M., M.F. Lehmann, S. G. Pati (2024). Improving the accuracy of δ¹⁸O and δ¹⁷O values of O₂ measured by continuous‑flow isotope-ratio mass spectrometry with a multi-point isotope-ratio calibration.Rapid Communications in Mass Spectrometry. DOI: 10.1002/rcm.9652Frey, C., Xi. Sun, L. Szemberski, K. L. Casciotti, E. Garcia-Robledo, A. Jayakumar, C.L. Kelly, M.F. Lehmann, and Bess B. Ward (2022). Nitrous oxide production kinetics from ammonia oxidation in the Eastern Tropical North Pacific. Accepted to Limnology and Oceanography

Ehrenfels., B., K.B.L. Baumann, R. Niederdorfer, A.S. Mbonde, I.A. Kimirei, T. Kuhn, P. Magyar, W. Mohr, D. Odermatt, C.J. Schubert, H. Bürgmann, M.F. Lehmann, B. Wehrli, and C. M. Callbeck (2023). Hydrodynamic regimes modulate nitrogen fixation and the mode of diazotrophy in Lake Tanganyika. Nature Communications. https://doi.org/10.1038/s41467-023-42391-3

Bartosiewicz, M., J. Venetz, S. Läubli, O. Sepúlveda-Steiner, D. Bouffard, J. Zopfi and M. F. Lehmann (2023). Detritus-hosted methanogenesis sustains the methane paradox in oxic lake waters. Limnology and Oceanography; Vol. 68, 248-264; https://doi.org/10.1002/lno.12263

Su, G., M.F. Lehmann, J. Tischer, Y. Weber, F. Lepori, J.-C. Walser, H. Niemann, J. Zopfi (2023). Water column dynamics controls nitrite-dependent anaerobic methane oxidation by Candidatus ‘Methylomirabilis’ in stratified lake basins. The ISME Journal; 17, pages 693–702 (2023) https://doi.org/10.1038/s41396-023-01382-4

Frey, C., Xi. Sun, L. Szemberski, K. L. Casciotti, E. Garcia-Robledo, A. Jayakumar, C.L. Kelly, M.F. Lehmann, and Bess B. Ward (2023). Kinetics of nitrous oxide production from ammonia oxidation in the Eastern Tropical North Pacific. Limnology and Oceanography; Vol. 68, 424-438;  https://doi.org/10.1002/lno.12283