A Critical Comparison of Different Approaches to Sediment-Quality Assessments in the Santos Estuarine System in Brazil

A Critical Comparison of Different Approaches to Sediment-Quality Assessments in the Santos Estuarine System in Brazil

Author Torres, Ronaldo José Autor UNIFESP Google Scholar
Cesar, Augusto Autor UNIFESP Google Scholar
Pastor, Victor A. Google Scholar
Pereira, Camilo Dias Seabra Autor UNIFESP Google Scholar
Choueri, Rodrigo Brasil Autor UNIFESP Google Scholar
Cortez, Fernando S. Google Scholar
Morais, Rodofley D. Google Scholar
Abessa, Denis M. S. Google Scholar
Nascimento, Marcos R. L. do Google Scholar
Morais, Cassia R. Google Scholar
Fadini, Pedro S. Google Scholar
Del Valls Casillas, Tomas A. Google Scholar
Mozeto, Antonio A. Google Scholar
Institution Universidade Federal de São Paulo (UNIFESP)
Univ Santa Cecilia
Univ Cadiz
Universidade Federal do Paraná (UFPR)
Univ Estadual Paulista Julio de Mesquita Filho UN
CNEN
Universidade Federal de São Carlos (UFSCar)
Abstract This study focuses on the discussion of different lines of evidence (LoEs) applied to a sediment-quality assessment that considered the following: chemical concentrations of metals; polycyclic aromatic hydrocarbons (PAHs) in estuarine waters, sediments, and oysters (native and caged Crassostrea brasiliana); PAHs in semipermeable membrane devices (SPMDs); simultaneously extracted metals-acid volatile sulfides (SEM-AVS); benthic community assessment (the exploratory benthic index and the relative benthic index); chronic toxicity tests with the sea urchin Lytechinus variegatus; and bioaccumulation models. Significantly contaminated sediments from the Santos Estuarine System and the consequent toxicity of tested organisms were measured. Caged oysters presented bioaccumulation rates a parts per thousand currency sign2,500 % of total PAH content and 200 % of metal content when compared with control organisms from an uncontaminated area. SPMD results presented the same bioaccumulation pattern as caged oysters but at lower concentrations. Benthic communities presented some alterations, and there was a predominance of tolerant species in the inner part of the estuary. According to the SEM-AVS approach, metals should be assumed to be nonbioavailable, but experiments with transplanted C. brasiliana showed metal bioaccumulation, particularly in the cases of chromium, copper, mercury, and zinc. the weight-of-evidence approach was applied to compare and harmonize LoEs commonly used in sediment-quality assessments and to then classify estuary environments according to both their potential for having adverse effects on the biota and their possible ecological risks. All of the results of these approaches (except for SEM-AVS) were found to complement each other.
Language English
Sponsor Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Spanish Ministry of Education-Ministerio de Educacion-Direccion General de Universidades (MECD/DGU)
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
Ministry of Economy and Competitivity in Spain
Grant number CAPES: 099/06
Spanish Ministry of Education-Ministerio de Educacion-Direccion General de Universidades (MECD/DGU): PHB2005-0100-PC
Ministry of Economy and Competitivity in Spain: CTM2011-28437-C02-02
Ministry of Economy and Competitivity in Spain: CTM2012-36476-C02-01
Date 2015-01-01
Published in Archives of Environmental Contamination and Toxicology. New York: Springer, v. 68, n. 1, p. 132-147, 2015.
ISSN 0090-4341 (Sherpa/Romeo, impact factor)
Publisher Springer
Extent 132-147
Origin http://dx.doi.org/10.1007/s00244-014-0099-2
Access rights Closed access
Type Article
Web of Science ID WOS:000347247900014
URI http://repositorio.unifesp.br/handle/11600/38569

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