Eric explore the ecology of marine and freshwater systems with a focus on aquatic microorganisms (bacteria, archaea and protists). His focus lies in understanding the temporal dynamics of microbial communities and their functional responses to environmental change, such as climate, eutrophication, and mercury pollution. Specifically his main research lines are centered on investigating the consequences of climate-induced deoxygenation and freshwater-to-brackish transitions (and vice versa) of water columns on their microbial communities. He is using molecular ecology approaches (ancient) metagenomics, MAGs-based analysis and metatranscriptomics. By combining genetic information from past and modern environments, he strives to shed light on the intricate relationships between microbial communities and their environment.