This study was carried out with groups of extractivists of mangrove oysters in the estuary of Cananéia, São Paulo State, Brazil, between the years 1999 and 2007 with the objective to evaluate and compare trends in the sustainability of this activity, in a multidimensional and integrated way, in social, economic, ecological, technological and ethical dimensions, using the method RAPFISH. The different groups had distinct trends related to sustainability and the social, technological and ethical dimensions had more influence on trends in sustainability than the ecological and economic dimensions. The group with the best performance in the sustainability assessment was Mandira, due to advances promoted by local social organization. On the other hand, the Porto Cubatão group showed the worst performance, once this is very recent group in the extractivism of oysters. The RAPFISH proved to be a useful tool for data assessment.Keywords: sustainability, Crassostrea spp., mangrove oyster, extractivism, fishery. Avaliação Multidimensional de sustentabilidade do extrativismo da ostra de mangue Crassostrea spp. no estuário de Cananéia, São Paulo, BrasilResumo O presente trabalho foi desenvolvido junto aos grupos de extrativistas de ostra em Cananéia, SP, entre os anos de 1999 e 2007 e teve o objetivo de avaliar e comparar as tendências relativas à sustentabilidade dessa atividade, de forma multidimensional e integrada, nas dimensões social, econômica, ecológica, tecnológica e ética, utilizando o método RAPFISH. Os diferentes grupos estudados apresentaram dististas tendências relativas à sustentabilidade e as dimensões social, tecnológica e ética exerceram maior influência sobre as tendências da sustentabilidade, do que as dimensões ecológica e econômica. O grupo com melhor desempenho na avaliação de sustentabilidade foi o do Mandira, em razão dos avanços promovidos pela organização social local, no extremo oposto posicionou-se o grupo do Porto Cubatão, em razão do grupo ser muito recente no extrativismo de ostras. O Rapfish se mostrou uma ferramenta útil no equacionamento dos dados.Palavras-chave: sustentabilidade, Crassostrea spp., ostra de mangue, extrativismo, pesca.
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