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    The dataset contains occasional records of Vertebrates (Reptiles, birds and large and medium-sized mammals collected in the lower valley of the River Tua, and included in the Ecological Monitoring Program (2011-17) of the Environmental Impact Assessment of the Foz Tua Hydroelectric Dam, promoted by EDP – Energias de Portugal, S.A. Data were collected between October 2010 and July 2017 in a non-systematic way, on the area of the lower Tua valley directly or indirectly affected by the Foz Tua dam. The dataset includes both "ad hoc observations" and observations of non-target species made in regular censuses of specific faunistic groups. The presence of individuals was recorded both by direct observations in the case of birds and reptiles and by indirect evidences (scats, camera-trapping) in the case of mammals.