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An Unstructured Numerical Model to Study Wind-Driven Circulation Patterns in a Managed Coastal Mediterranean Wetland: The Vaccares Lagoon System 5
Boutron, Olivier; Bertrand, Olivier; Fiandrino, Annie; Hoehener, Patrick; Sandoz, Alain; Cherain, Yves; Coulet, Eric; Chauvelon, Philippe.
The spatiotemporal structure of wind-driven circulation patterns and associated water exchanges can drive important bio-hydrodynamic interactions in shallow lagoons. The Vaccares lagoon system is a complex shallow hydrosystem located in the central part of the Rhone Delta (France). It is internationally recognized as part of a biosphere reserve within the framework of UNESCO's Man and Biosphere Programme, and as a RAMSAR site. Due to its frequent occurrence in this area, and considering the shallowness of the Vaccares lagoon system, wind is assumed to play a major role in the hydrodynamic and biological processes. In this study, a hydrodynamic model was developed to investigate the structure of wind-driven circulations in the Vaccares lagoon system, to...
Tipo: Text Palavras-chave: Coastal lagoon; Mathematical model; Hydrodynamics; Calibration; Validation; Wind-driven circulation.
Ano: 2015 URL: http://archimer.ifremer.fr/doc/00303/41382/40558.pdf
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Spatial dynamics of Zostera noltii over a 5-year period of fluctuating salinity in the Vaccarès lagoon, France 5
Grillas, Patrick; Charpentier, Anne; Auby, Isabelle; Lescuyer, François; Coulet, Eric.
During a 5-year survey in the Vaccarès lagoon, a successive period of decrease and increase in water salinity was associated with a decline and progressive recovery of a Z. noltii meadow. A negative correlation between cover index and water depth suggests that light availability was a limiting factor for plant growth over this period. The persistence of turbid water due to the lack of flocculation of suspended sediments may explain the decline of the seagrass meadow over the decrease in salinity.
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Ano: 2000 URL: http://archimer.ifremer.fr/doc/00150/26081/24189.pdf
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