Abstract
The deposition of Posidonia oceanica leaves on the sandy beaches of the Calabrian region could be one of the most important defence mechanisms against erosion processes. The management of Posidonia oceanica leaf litter in Italy has been realised through the mechanical removal and transport in dumping areas of the beach-cast material. This solution, apparently simple and fast, produces a net loss of sediments from sandy beaches and, therefore, a deficit in the sedimentary budget of the coastline, leading the coastal system to possible shore erosions. Instead, it could be better to keep these vegetable deposits in place to warrant a positive sedimentary budget and to increase the tourist value of regional beaches, improving coastal tourism in seaside resorts with opportunities for bathing.
Highlights
Posidonia oceanica (Linnaeus) Delile, an endemic species of the Mediterranean Sea, forms extensive beds in the infra-littoral bottom of the basin, according to favourable environmental conditions
Along Mediterranean coasts, Posidonia beds provide a great variety of ecosystem services, amongst which the power of entrapping marine plastics [1]
A long time ago, the meadows of Posidonia oceanica surrounded a large part of the Mediterranean coastline, forming an almost continuous belt along the coasts of the basin
Summary
Posidonia oceanica (Linnaeus) Delile, an endemic species of the Mediterranean Sea, forms extensive beds in the infra-littoral bottom of the basin, according to favourable environmental conditions. This negative trend has been reported in many areas of the Italian coastline where 72% of prairies have deteriorated, as shown by the “National Program of characterization and development of Posidonia oceanica” started in 1989 and finished in 2009 [4] These critical conditions of the Mediterranean meadows have been reported in other. The critical state of the Italian coast has become a serious problem in recent years along its coastal boundary, where 42% is in erosion [13] These negative conditions are severe in the Calabrian coastline, where 43% of beaches are in erosion [14]. Mediterranean basin are a temporary of organicsink matter organic matter made up of detached leaves of the plants, and include inorganic matemade up of detached leaves of the plants, and include inorganic materials such as rials such as marine plastics, and water
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