English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/123154
logo share SHARE logo core CORE   Add this article to your Mendeley library MendeleyBASE

Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Exportar a otros formatos:

Posidonia oceanica beach-cast litter in Mediterranean beaches: a coastal videomonitoring study

AutorGómez-Pujol, Lluís; Orfila, Alejandro ; Álvarez-Ellacuria, Amaya ; Terrados, Jorge ; Tintoré, Joaquín
Palabras clavePosidonia oceanica
beach morphodynamics
beach erosion
Fecha de publicación2013
EditorCoastal Education and Research Foundation
CitaciónJournal of Coastal Research 65(Special Issue): 1768-1773 (2013)
ResumenMediterranean nearshore sandy and rocky bottoms are colonized by the endemic reef-building seagrass Posidonia oceanica. This species loses leaves in autumn that form large litter patches in the surf zone and huge litter banks on adjacent beaches, resulting in wedge and layered structures of few centimetres to several meters in thick (banquettes). Some authors pointed the importance of those banquettes for the protection of sandy beaches because they dissipate wave energy. By contrast other authors state that this effect is almost negligible. This work deals with the role of Posidonia oceanica accumulations in Mediterranean beach morphodynamics. By means of coastal video-monitoring and wave records we assess the marine conditions related to the formation and destruction of banquettes and evaluate their role in the protection of two sandy beaches (Cala Millor and Son Bou, Balearic Islands). Results indicate that banquettes are common beach features at the study sites although they are not persistent and experience complex construction and destruction dynamics throughout the year. Two different types of banquette construction can be differentiated over the year: one related to the reworking of older seagrass beach cast by alongshore currents and a second as a response to the incorporation of new volumes of dead leaves after energetic winter storms (Hs ~2 to 3 m). In both cases, seagrass cast accumulations are continuously built up and destroyed and rarely persist before the arrival of new sea storms. Therefore, at least for semi-enclosed sandy beaches, the protection role of seagrass banquettes should be reconsidered (Journal)
DescripciónTrabajo presentado en ICS 2013, 12th International Coastal Symposium, celebrado del 8 al 12 de abril de 2013 en Plymouth (Reino Unido). - Publicado en el volumen 2 de Proceedings of the 12th International Coastal Symposium, ICS2013, número especial 65 de la revista Journal of Coastal Research
Versión del editorhttp://dx.doi.org/0.2112/SI65-299.1
Identificadoresdoi: 10.2112/SI65-299.1
issn: 0749-0208
Aparece en las colecciones: (IMEDEA) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
accesoRestringido.pdf15,38 kBAdobe PDFVista previa
Mostrar el registro completo

NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.