Survey of threatened native freshwater bivalves and invasive alien species in the Ebro basin, 2025–2027

Summary

Empresa de Transformación Agraria (Tragsa) is commissioning surveys to determine the presence of threatened native freshwater bivalves and invasive alien species in the Ebro river basin, in Zaragoza province, to support conservation and environmental improvement of the public water domain. The single, undivided contract covers an estimated 60 basic diving-team days, 30 specific studies and 30 survey-control and monitoring services, delivered over 14 months at locations designated within the basin.