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Please use this identifier to cite or link to this item: http://repositorio.ufba.br/ri/handle/ri/5497

Title: Integrated assessment of mangrove sediments in the Camamu Bay (Bahia, Brazil)
Other Titles: Ecotoxicology and Environmental Safety
Authors: Paixão, Joana F.
Oliveira, Olívia Maria Cordeiro de
Dominguez, José Maria Landim
Almeida, Edna dos Santos
Carvalho, Gilson Correia de
Magalhães, Wagner Ferreira
Keywords: Mangroves;Porewater toxicity test;Embryo-larval oyster development;Benthic assemblages;Sedimentary chemistry;Weight-of-evidence;Camamu Bay
Issue Date: 2011
Abstract: Camamu Bay, an Environmentally Protected Area, may be affected by the pressures of tourism and oil exploration in the adjacent continental platform. The current quality of the mangrove sediments was evaluated by porewater bioassays using embryos of Crassostrea rhizophorae and by an analysis of benthic macrofauna and its relationships with organic compounds, trace metals and bioavailability. Porewater toxicity varied from low to moderate in the majority of the samples, and polychaetes dominated the benthos. The Grande Island sampling station (Station 1) presented more sandy sediments, differentiated macrobenthic assemblages and the highest metal concentrations in relation to other stations and guideline values, and it was the only station that indicated a possible bioavailability ofmetals. The origin of the metals (mainly barium) ismost likely associated with the barite ore deposits located in the Grande and Pequena islands. These results may be useful for future assessment of the impact of oil exploration in the coastal region.
Description: texto completo: acesso restrito. p.403–415.
URI: http://www.repositorio.ufba.br/ri/handle/ri/5497
ISSN: 1090-2414
Appears in Collections:Artigos Publicados em Periódicos (IGEO)

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