EDIA – Global Bird Monitoring Program of the Alqueva Dam (EFMA) Secondary Irrigation Network (block B: irrigation blocks of Alfundão, Ferreira-Valbom, Loureiro-Alvito, Monte Novo, Pedrógão, Pisão, São Matias and Vale de Gaio): Bird Atlas - population trends [winter 2019 - spring 2020]

The dataset contains records of all birds collected in the area of the block B of the Secundary Irrigation Network of the Alqueva Dam (irrigation blocks of Alfundão, Ferreira-Valbom, Loureiro-Alvito, Monte Novo, Pedrógão, Pisão, São Matias and Vale de Gaio) and in a control zone, performed within the General Bird Monitoring Plan of the area (population trend Atlas), promoted by EDIA, S.A. Data were collected in the winter of 2019 and in the springh of 2020, in 185 sampling squares of 1x1 km (UTM grid), distributed in the area affected by the Irrigation Block (161 “impact” squares) and in a control area (24 “control” squares), stratified by habitat.

A total of 31949 contacts was obtained, for 128 species and/or genus of birds.