Dissolved Organic MattEr, nutrient SToichiometry and Interactions with microbial Communities in the Lake Geneva Basin (DOMESTIC)

Dissolved Organic MattEr, nutrient SToichiometry and Interactions with microbial Communities in the Lake Geneva Basin (DOMESTIC)

Dissolved organic matter (DOM) plays a critical role on the biogeochemical and ecological functioning of freshwater ecosystems. Agriculture and urbanization not only greatly modify both the amount and composition of DOM transported by inland waters, but also their nutrient loadings (N and P). In this project we aim at investigating how changes in DOM and nutrients contents affect microbial communities functions across aquatic ecosystems (stream, river and lake waters) and at their interfaces in a peri-alpine context, namely the Lake Geneva Basin. More specific questions focus on the interactions between nutrient stoichiometry on the functional traits of bacterial communities and its impact on the microbial fate of DOM when and where lacustrine and riverine waters mix.

Contact: Thibault Lambert, Marie-Elodie Perga.