Review of oil and HNS accidental spills in Europe: Identifying major environmental monitoring gaps and drawing priorities

► Monitoring programmes status set up following the major spill incidents in Europe. ► Key monitoring gaps and priorities to an effective monitoring of accidental spills. ► Studies to gather information on consequences of HNS spills should be undertaken. ► Set up reference databases to distinguish spill pollution effects from other factors. ► Establishment of guidelines for conducting monitoring programmes of accidental spills.