We study biogeochemical cycles along the land-ocean continuum. We focus on ecosystems most vulnerable to change and with the potential to impact local water quality or global carbon budgets, including headwater streams and all types of wetlands. Our research spans latitudes (the Arctic to the tropics) and addresses questions related to land management and nature-based solutions. A large part of our research centers on understanding pathways and controls on the degradation of organic molecules, and how this leads to the balance between storage and atmospheric emissions.