The project in a nutshell
The presence of abnormally high methane concentration in aerobic parts of aquatic systems is known as the “methane paradox”. Indeed, the classic paradigm of the biological formation of CH4 is that this methanogenesis is carried out by Archaea, which need anaerobic conditions to live. CH4 peaks have been observed in the Lake Geneva water column but are not well understood. Our goal is to follow the dynamics of CH4 for one year, through in situ profiling and monitoring with CH4 probes and multiparameter probes. In addition, CH4 flux at the water-atmosphere interface will be determined as well as isotopic analyses and metagenomic determinations on water samples.
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