| Autor: |
Tomasello Agostino, Noè Simona, Pampalone Vincenzo, Savona Andrea, Cassetti Federica, Pirrotta Maria, Andolina Cristina, Aleo Adele Elisa, Tramati Cecilia, Vizzini Salvatrice, Mazzola Antonio, Calvo Sebastiano |
| Přispěvatelé: |
Tomasello Agostino, Noè Simona, Pampalone Vincenzo, Savona Andrea, Cassetti Federica, Pirrotta Maria, Andolina Cristina, Aleo Adele Elisa, Tramati Cecilia, Vizzini Salvatrice, Mazzola Antonio, Calvo Sebastiano |
| Jazyk: |
angličtina |
| Rok vydání: |
2019 |
| Předmět: |
|
| Popis: |
Posidonia oceanica meadows are among the most important marine coastal ecosystems in the Mediterranean Sea due to several roles they are able to play. They, in fact, support high levels of primary production, enhance sedimentation of suspended particles through their canopies, prevent resuspension of marine sediments by means of roots and rhizomes and counteract coast erosion. Part of the primary production of this seagrass is not transferred to herbivores either immediately to detritus pathway but it can accumulate on the shore in form of banquette, typical structures exerting a significant role in protection of beaches from erosion. To accurately measure the extension, morphology, volume and derivate parameters of these structures a remote sensing approach is often required, since very large banquettes can occur along the shore. The aim of this study was to investigate the architecture and dynamics of some banquettes observed along coasts of Sicily, by using a multitemporal analysis of remotely sensed images. In particular very high resolution drone images, combined with GPS field data, was used to obtain a 3D reconstruction of banquette morphology. The study was carried out along three pocket beaches: Capo Feto (TP), Maragani and Scala dei Turchi (AG). Generated ortophotos and digital elevation model were imported into geospatial analysis software to quantify volumes and their spatial and temporal evolutions. 3D approach allowed us to accurately estimate different levels of necromass accumulation.This approach will allow to achieve a more detailed and complete view on the role of P. oceanica detritus stocks within coastal marine dynamics. This might also contribute to gain a better insight into the ecosystem services they provide. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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