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Impact of vegetation structure dynamics and usage on the nursery function of West Europeen tidal salt-marshes ArchiMer
Parlier, E; Albert, F; Cuzange, P. A.; Don, J; Feunteun, E.
The study of the fish population of the Bay of Aiguillon salt marsh (France) and the Mont Saint-Michel Bay enabled us to demonstrate the existence in this singular system of a structuration in colonizing guilds. Some species colonize the marsh exclusively during their first year or first years (salt marsh colonizing year's youths and juveniles) Other species reside in the marsh, like the gobies Pomatoschistus spp. and spend their entire biological cycle around the marsh (salt marsh colonizing resident species). Another category of species goes about the marsh in an opportunist way, using it as a privileged feeding area during their early stages or when adults (salt marsh colonizing opportunist species). The activities linked to the conservation of the...
Tipo: Text Palavras-chave: Mont Saint Michel bay; Aiguillon bay; Settlers guilds; Estuarine systems; Nursery function; Fish community.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/publication-6488.pdf
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Modélisation des flux sédimentaires charriés dans la baie du Mont-Saint-Michel (Manche, France) ArchiMer
Ehrhold, Axel; Guillou, Sylvain; Auffret, J; Garlan, T; Nguyen, K.
A study of the sediment bedload in the Mont-Saint-Michel bay is presented here. It combines the use of a 2DH numerical model and a pattern of sediment bedload transport established on the analysis of the statements of sidescan imagery combined with a dense groundwork of sedimentary grab samples. Results show the role of tidal currents asymetry in the realistic bioclastic sand transfert from the subtidal environment to the coast and the divergence of sedimentary dynamic between the maritime bay to the West and the tidal delta to the East. This in-shore transfer is responsable of the Holocene prism construction. The model reproduces tidal sedimentary dynamics with the immediate surroundings of the Mont-Saint-Michel. It shows the interest of the modeling of...
Tipo: Text Palavras-chave: Mont Saint Michel bay; Sediment; Sidescan; Bedload transport; Hydrodynamic model; Baie du Mont Saint Miche; Sédiment; Sonar latéral; Débit massique; Modèle hydrodynamique.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/publication-522.pdf
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