This session aims to showcase emerging research from early career researchers (ECRs) advancing our understanding of ecosystem processes from a biogeosciences perspective. We welcome contributions that explore the interactions among biological, hydrological, and biogeochemical processes across natural and managed environments, including research focused on carbon cycling and greenhouse gas fluxes, nutrient cycling and transport, ecosystem–atmosphere exchange, and interactions among water, carbon, and nutrients. In particular, we encourage presentations that quantify biogeochemical and ecosystem functions; investigate controls on greenhouse gas, carbon, nutrient, and water fluxes; characterize measurement and modelling uncertainty in complex and heterogeneous landscapes; scale biophysical and biogeochemical processes from plot to landscape scales; evaluate the effects of climate and land-use change on ecosystem function; or examine ecosystem responses to extreme weather, disturbance, and environmental change. Studies spanning atmospheric, terrestrial, wetland, and aquatic systems, from local measurements to landscape- and regional-scale analyses, are encouraged. We welcome observational, experimental, modelling, and interdisciplinary approaches that highlight the breadth and growing contributions of ECRs to Canadian biogeosciences.