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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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