Topic I - Advances in limnogeology > I-4-Organic geochemistry in lakes: recent methodological developments and applications in lacustrine environments

Conveners

1. Guillemette Ménot (Laboratoire de Géologie de Lyon-Terre, Planètes et Environnement - LGL-TPE, France)  
2. Nathalie Dubois, (Eawag - Swiss Federal Institute of Aquatic Science and Technology, Switzerland) 

Biomarkers provide information on many processes such as ecology, hydrology, sediment transport, diagenesis, atmospheric or water chemistry, and paleoclimate. The interpretation of molecular and isotopic signals from organic matter, including plant waxes, algal markers, alkenones, GDGTs, or other compounds, mostly relies on empirical correlations. In recent years, environmental DNA has emerged as a potent tool that requires further refinement. Progress towards mechanistic understandings on the influence of environmental factors on biosynthesis, as well as signal modifications during transport and deposition increase the validity of the proxies and open opportunities for broader applications. 

This session invites submissions that examine these themes from source to sink, encompassing biosynthesis, transport, and post-depositional changes across all timeframes and in any depositional environment (with a focus on lakes). We welcome research that employs or evaluates process-based interpretations of biomarker data to deduce environmental, ecological, or climatic variables, both historical and contemporary, from lacustrine records.