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Numerical analysis of the food web of an intertidal mudflat ecosystem on the Atlantic coast of France ArchiMer
Leguerrier, Delphine; Niquil, Nathalie; Boileau, N; Rzeznik, J; Sauriau, Pierre-guy; Le Moine, Olivier; Bacher, Cedric.
Food web modelling is an ideal way to describe ecosystems, because it accounts for the totality of the relationships between its various components. One difficulty of such an approach, however, lies in the lack of data and information about some ecological relationships, resulting in under-defined systems. Inverse analysis can serve to complete steady-state food webs where the number of direct flow measurements is insufficient relative to the actual number of flows. We applied this method to the intertidal mudflat ecosystem of Brouage (eastern Marennes-Oleron Bay, SW France) and estimated the annual average carbon flows between the compartments of a coupled benthic and pelagic trophic food web from primary producers (microphytobenthos and phytoplankton) to...
Tipo: Text Palavras-chave: Network analysis; Food web; Inverse analysis; Carbon flow.
Ano: 2003 URL: http://archimer.ifremer.fr/doc/2003/publication-3134.pdf
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Aquatic food webs in mangrove and seagrass habitats of Centla Wetland, a Biosphere Reserve in Southeastern Mexico Neotropical Ichthyology
Mendoza-Carranza,Manuel; Hoeinghaus,David J; Garcia,Alexandre M; Romero-Rodriguez,Ángel.
Mangrove and seagrass habitats are important components of tropical coastal zones worldwide, and are conspicuous habitats of Centla Wetland Biosphere Reserve (CWBR) in Tabasco, Mexico. In this study, we examine food webs in mangrove- and seagrass-dominated habitats of CWBR using stable isotope ratios of carbon and nitrogen. Our objective was to identify the importance of carbon derived from mangroves and seagrasses to secondary production of aquatic consumers in this poorly studied conservation area. Carbon and nitrogen isotope ratios of basal sources and aquatic consumers indicated that the species-rich food webs of both habitats are dependent on riparian production sources. The abundant Red mangrove Rhizophora mangle appears to be a primary source of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Carbon flow; Food chains; Neotropical; Rizophora mangle; Submerged aquatic vegetation; Vallisneria americana.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000100020
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