The document discusses the importance of monitoring land-ocean carbon fluxes at a pan-European scale. It notes that while there is a significant amount of existing data on carbon fluxes, the data is scattered and not standardized. The document recommends establishing a coordinated monitoring network that builds on existing water quality monitoring networks to regularly measure carbon and other parameters in Europe's major rivers, lakes, and coastal waters. Targeted process studies and numerical modeling could help extrapolate the monitoring data and further scientific understanding of carbon fluxes across the land-ocean continuum.