RETURN TO WP2 Synergetic effects of urban, mining and agricultural pressures (PIS : D. ACHA AND C. DUWIG) – Current evolution of nutrient fluxes (surface, groundwater and peatlands) Contribution of urban, mining, and agriculture sources (isotopes) – Life cycle of these compounds Organic micropollutants toxicity (persistence and/or bioaccumulation) – Their role in the triggering of eutrophication Interaction of nutrients with contaminants tracers