Effects of contamination with toxic metals on the environmental quality of Sepetiba Bay (SE Brazil)

Ribeiro, Andreza Portella; Figueiredo, Ana Maria Graciano; Santos, Juliano Costa dos; Ferreira, Paulo Alves de Lima; Graudenz, Gustavo Silveira; Ruiz, Mauro Silva; Mahiques, Michel Michaelovitch de; Figueira, Rubens César Lopes; Wasserman, Julio César

doi:10.1108/meq-06-2013-0074

Cited by 11 publications

(4 citation statements)

References 30 publications

(31 reference statements)

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“…The human population that inhabits the basin surrounding Sepetiba Bay increased from 600,000 inhabitants in 1978 to 1.2 million in the late 1980s, reaching approximately 2 million in 2010 (IBGE, 2010; supporting information S1). Sepetiba Bay is an important shipping centre and has the largest steel‐making complex in Latin America (Ribeiro et al, 2015). The bay encompasses a growing number of large, and potentially polluting industrial installations, including oil and gas terminals (PETROBRAS), four steel mills (Cosigua/GERDAU, Ternium Brasil/CSA, Companhia Siderúrgica Nacional and Usiminas – Siderúrgicas de Minas Gerais), a thermo‐electric power station (FURNAS), four ports (Brazilian Navy, Porto Sudeste, Porto de Itaguaí and Companhia Portuária Baía de Sepetiba – Vale), two shipyards (Itaguaí Construções Navais – ICN and Odebrecht Shipyard), and the Santa Cruz industrial district (Figure 1).…”

Section: Methodsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

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20 years of research on the Guiana dolphin population of Sepetiba Bay, southeastern Brazil: What has changed?

Maciel,

Maricato,

Marqui

et al. 2023

Aquatic Conservation

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Despite the importance of coastal habitats for the provision of many ecosystem services, these areas are currently among the most impacted by human activities. Impacts on coastal ecosystems may affect many key species, such as the Guiana dolphin, which inhabits Sepetiba Bay in south‐eastern Brazil, a highly degraded environment owing to a human‐induced rapid environmental change. In this context, this study investigates the potential changes in the local Guiana dolphin behaviour, group structure, bioacoustics, site fidelity and habitat use over the past 20 years. For this, a historical database (1998–2007) was compared with current data on the local dolphin population (2017–2019). Between 2017 and 2019, the Guiana dolphins form significantly smaller groups (W = 3262.5, P > 0.001), spend more time foraging (61 vs. 10% in the past), emit whistles at a considerably lower rate (decreasing by 85.2%), have reduced site fidelity and now use a larger area. As Sepetiba Bay has been severely impacted by human activities in the recent past, with profound consequences for much of its biodiversity, the observed changes in dolphin behaviour are probably a consequence of habitat degradation and, in particular, of reduced prey availability. These findings have important implications for the management and conservation of the Guiana dolphin population of Sepetiba Bay. To break this human‐induced rapid environmental change, it will be essential to minimize the spatio‐temporal overlap of anthropogenic impacts, to avoid cumulative impacts. To mitigate anthropogenic impacts on the Guiana dolphins of Sepetiba Bay, it will be important to direct the following actions: (i) the regulation and control of anthropogenic noise; (ii) reduction and control of the release of chemical contaminants and organic effluents; (iii) more effective controls on vessel traffic within the areas used preferentially by the Guiana dolphin; and (iv) the implementation of measures to avoid overfishing and bycatch.

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Section: Methodsmentioning

confidence: 99%

Section: Study Areamentioning

confidence: 99%

20 years of research on the Guiana dolphin population of Sepetiba Bay, southeastern Brazil: What has changed?

Maciel,

Maricato,

Marqui

et al. 2023

Aquatic Conservation

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“…Still, understanding the extent of its significance requires improved monitoring systems as exemplified by the situation in Guandu. There, fishing activities in the Sepetiba bay, into which the Guandu River flows, are one of the main sources of fisheries products in the region (Brasil 2013), but they have been threatened directly by the management of the Guandu basin in the form of increased heavy metals discharge, predatory fishing, and lack of enforcement in the region (Ribeiro et al 2014(Ribeiro et al , 2015MPF 2015). For FHI assessments related to coastal basins, therefore, data on marine fish species that can enter freshwater rivers and streams, such as the Diapterus rhombeus in Guandu, are crucial to providing a more complete understanding of the relationship between people's dependence on biodiversity and the overall state of freshwater health.…”

Section: Insights On Information Needsmentioning

confidence: 99%

Operationalizing Integrated Water Resource Management in Latin America: Insights from Application of the Freshwater Health Index

Bezerra

Vollmer

Acero³

et al. 2021

Environmental Management

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Water crises in Latin America are more a consequence of poor management than resource scarcity. Addressing water management issues through better coordination, identification of problems and solutions, and agreement on common objectives to operationalize integrated water resources management (IWRM) could greatly improve water governance in the region. Composite indices have great potential to help overcome capacity and information challenges while supporting better IWRM. We applied one such index, the Freshwater Health Index (FHI) in three river basins in Latin America (Alto Mayo, Perú; Bogotá, Colombia; and Guandu, Brazil) to assess freshwater ecosystem vitality, ecosystem services, and the water governance system in place. The approach included convening management agencies, water utilities, planning authorities, local NGOs and industries, community groups and researchers to co-implement the FHI. The results provide detailed information on the ecological integrity of each basin and the sustainability of the ecosystem services being provided. All three basins show very low scores for governance and stakeholder engagement, thus improving both in the region should be a priority. The results also shed light on how the FHI framework can help inform decision-making to improve IWRM implementation by facilitating stakeholder engagement while contributing to coordination, identification of problems and solutions as well as agreement on common objectives. Because implementation of IWRM is part of the solution for the United Nations Sustainable Development Goal (SDG) 6.5 (“By 2030, implement IWRM at all levels, including through transboundary cooperation as appropriate”), our case studies can serve as examples to other Latin American countries to achieve SDG 6.5.

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“…1; Montezuma, 2007). Sepetiba Bay is an industrial and port center of great prominence and so a strongly anthropized region (Moraes, 1999;FEEMA, 2006;Neto et al, 2006;FIRJAN, 2012;Ecologus, 2014Ecologus, , 2016Moreno and Kato, 2015;Ribeiro et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Anthropogenic Impacts on the Western Sector of Sepetiba Bay (Se Do Brazil) Accessed by the Pb Isotope Composition of Surface Sediments

et al. 2019

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This work analyses lead concentrations and isotope ratios 204Pb,206Pb,207Pb,208Pb, determined by leaching and total dissolution techniques from surface bottom sediment samples collected in the western sector of Sepetiba Bay, Rio de Janeiro (SE Brazil). The main aim of this work was to identify possible sources of Pb, particularly those related to anthropogenic activities for the study area located in the external region of this bay. Isotope ratios of 206Pb, 207Pb ranged from 1.160 to 1.259 for the total dissolution technique and from 1.175 to 1.188 for the leaching technique. The Pb isotope signature of the surface sediments of the western sector of Sepetiba Bay were compared with that obtained in other studies performed in Sepetiba Bay, including records of pre- and pos-industrial activity, and in other Brazilian regions. The isotope signature of the analyzed sediments in the western sector of Sepetiba Bay is similar to that obtained in previous works realized in the eastern and northeastern internal region of this bay which is under strong urbanization and industrial pressure. The results of Pb isotope signature obtained by the integrated use of total dissolution and leaching techniques allowed to trace the presence of sediments dredged from highly contaminated areas located in the eastern and north-eastern internal region of Sepetiba Bay probably as a consequence of dredging activities and natural processes of sediment dispersion. IMPACTOS ANTROPOGÊNICOS NO SETOR OESTE DA BAÍA DE SEPETIBA (SE DO BRASIL) ACESSADOS PELA COMPOSIÇÃO ISOTÓPICA DE PB DE SEDIMENTOS SUPERFÍCIAIS ResumoEste trabalho analisa as concentrações de chumbo (Pb) e isótopos de Pb (204Pb, 206Pb, 207Pb, 208Pb) determinados por técnicas de lixiviação e dissolução total de amostras de sedimentos de fundo, coletadas no setor oeste (região externa) da Baía de Sepetiba, no Rio de Janeiro (SE Brasil). O principal objetivo deste trabalho foi identificar possíveis fontes de Pb, principalmente aquelas relacionadas a atividades antropogênicas na área de estudo. A assinatura do isótopo Pb dos sedimentos analisados foi comparada com os dados obtidos em outros estudos realizados na Baía de Sepetiba e em outras regiões brasileiras, incluindo registros de atividade pré e pós-industrial. Na região externa da Baía de Sepetiba, os valores de 206Pb/207Pb variaram de 1.160 a 1.259 para a técnica de dissolução total e de 1.175 a 1.188 para a técnica de lixiviação. A assinatura isotópica dos sedimentos analisados é semelhante à obtida em trabalhos anteriores realizados na região interna leste e nordeste desta baía, que está sob forte influência da urbanização e pressão industrial. Os resultados da assinatura dos isótopos de Pb obtidos pelo uso integrado das técnicas de dissolução total e lixiviação permitiram rastrear, no setor oeste (região externa) da Baía de Sepetiba, a presença de sedimentos provinientes de áreas altamente contaminadas localizadas na região interna leste e nordeste da baía de Sepetiba, provavelmente como conseqüência das atividades de dragagem e processos naturais de dispersão de sedimentos. Palavras-chave: Isótopos de Pb. Geoquímica. Atividades antropogênicas. Fonte de sedimentos. Impacto de dragagem. Litoral.

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Effects of contamination with toxic metals on the environmental quality of Sepetiba Bay (SE Brazil)

Cited by 11 publications

References 30 publications

20 years of research on the Guiana dolphin population of Sepetiba Bay, southeastern Brazil: What has changed?

20 years of research on the Guiana dolphin population of Sepetiba Bay, southeastern Brazil: What has changed?

Operationalizing Integrated Water Resource Management in Latin America: Insights from Application of the Freshwater Health Index

Anthropogenic Impacts on the Western Sector of Sepetiba Bay (Se Do Brazil) Accessed by the Pb Isotope Composition of Surface Sediments

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