Data/hora: 02/06/2024 07:07:32

Provedor de dados: 	5	
País: 	France	
Título: 	Elaboration d'un protocole d'analyses de données pour une typologie des peuplements démersaux du plateau continental guyanais	
Autores: 	Nerini, D.	
Data: 	1994-09	
Ano: 	1994	
Palavras-chave: 	Guyane; Typologie; Analyses d'inertie; Géostatistique. Peuplements démersaux; Crevette Penaeus subtilis; French Guyana; Typology; Incrtia analysis; Gcostatistic Technics; Brown shrimp Penaeus subtilis.	
Resumo: 	Two trawl surveys (1 993 may, october) have been conducted by the IFREMER in order to carry out a typology of demersal populations and to map the spatial distribution of the penaeid shrimp Penoeus subtilis (French Guyana shrimp fishery Deet target species) over the French Guyana continental shelf. For this purpose, a particular data analyses procedure was designed. On one hand, inertia and cluster analysis were used to detemline the main structures of dcmersal communities. On the other hand, mapping of Penaeus subtilis distribution, and espccially of the recruits in the fisher)', \Vas obtained through geostatistic technique. Impacts of the Amazon and Guyana ri vers on the demersal ecosystem are strong. They inducc separation between the demersal communities, in-shore and off-shore species. The 25-30 met ers strata may be considered as a "buffer" area, between briny shallow waters and off-shore marine waters, respectively associated with muddy (Amazon alluvionary influence) and sandy (fine to rough) sedimentodological facies. For Penaeus subtilis, results show a spatial distribution gradient with respect to dcpth, and a particular distribution pattern within the transition zone. Three prcferential distribution areas have becn identified off the main Guyane rivers ': Maroni, Oyapock and Sinnamary. The Penaeus subtilis recruitment mecanism have been completed, large concentrations of recruits being pointed out off the Maroni and Oyapock rivers, up to 40 meters in depth	
Tipo: 	Text	
Idioma: 	Francês	
Identificador: 	http://archimer.ifremer.fr/doc/00305/41574/40782.pdf

http://archimer.ifremer.fr/doc/00305/41574/	
Formato: 	application/pdf	
Fonte: 	1994 Ifremer, Université d'Aix Marseille

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