Environmental monitoring during beach nourishment using relict sands (central Tyrrhenian sea)

摘要

This paper aims to underline the importance of monitoring studies during the execution of activities, like beach nourishment using relict sands, that plan the use of innovative technology. In fact, environmental monitoring studies allow prompt intervention in the case of unexpected events or interference factors. Potential negative repercussions on the marine environment could not be estimated through characterization studies carried out ante operam. This paper reports the monitoring study carried out for beach nourishment along the South Latium coasts (Tyrrhenian sea). In this area Posidonia oceanica meadows are present. In this context, a detailed and updated cartography and the knowledge of the P. oceanica beds distribution (a "priority habitat" in the UE Habitats Directive) allowed prompt identification of potential effects on the seagrass caused by specific technical procedures of the beach nourishment, not well-known in the planning phase of the project.