Modeling global nutrient export from watersheds

► Future global nutrient (N, P, C, Si) export models are preferably dynamic, distributed and mechanistic. ► Future nutrient inputs to coastal waters may be higher than today, but not in all world regions. ► Coastal eutrophication may increase in Asia, and decrease in Europe in the future. ► More measurements of nutrients in rivers are needed, especially in the tropics. ► There is a need for agricultural and sanitation policies aimed at reducing coastal eutrophication.