Canada is rich in water resources, and many ecological, cultural and economic processes depend on streams, lakes and wetlands across the country. However, water quality in these ecosystems depends on human activities across the watershed and within the water bodies themselves. We invite contributions from limnologists who work on questions of biogeochemistry, and biogeochemists who work in aquatic systems, but aren’t quite ready to self-identify as limnologists. We are especially interested in work that investigates the transport, storage, and transformation of carbon, macro and micro-nutrients, and pollutants in aquatic systems, from tropical regions to polar environments. Studies examining water quality dynamics, nutrient cycling, contaminant behaviour or greenhouse gas exchanges in streams, lakes, reservoirs or wetlands are welcomed. Field and model-based analyses ranging from fine-scale mechanistic behaviour to landscape-scale patterns and processes are all within scope. We also encourage synthesis of results within a wider context of aquatic environments and human health, climate and land-use change impacts, or aquatic ecosystem dynamics and recovery following disturbances.