Trajectories of the Seine River Basin.- The evolution of the Seine basin water bodies through historical maps.- Pluri-annual water budget on the Seine basin: past, current and future trends.- The Seine watershed water-agro-food system: long-term trajectories of C, N, P metabolism.- Past and future trajectories of human excreta management systems - the case of Paris 19th-21st centuries.- How agricultural practices should be integrated to understand and simulate long-term pesticide contamination in the Seine River basin?.- Mass balance of PAHs at the scale of the Seine River basin.- Ecological functioning of the Seine River: from long term modelling approaches to high frequency data analysis.- Aquatic organic matter in the Seine basin: sources, spatio-temporal variability, impact of urban discharges and influence on micro-pollutant speciation.- Experience gained from ecotoxicological studies in the Seine River and its drainage basin over the last decade: applicative examples and research perspectives.- Sedimentary archives reveal the concealed history of micropollutant contamination in the Seine River basin.- Changes in fish communities of the Seine Basin over a long-term perspective.- Bathing activities and microbiological water quality in the Paris area: a long-term perspective.- Contaminants of emerging concern in the Seine River basin: overview of recent research.- River basin vision: tools and approaches, from yesterday to tomorrow.