Identification of contaminants of concern in the upper Tagus river basin (central Spain). Part 2: Spatio-temporal analysis and ecological risk assessment - Arenas-Sánchez, A.; Rico, A.; Rivas-Tabares, D.; Blanco, A.; Garcia-Doncel, P.; Romero-Salas, A.; Nozal, L.; Vighi, M. (Science of the Total Environment, 2019)