Ecological risks of trace metals in Guanabara Bay, Rio de Janeiro, Brazil: An index analysis approach

Aguiar, Valquíria Maria de Carvalho; Lima, Michelle Nunes de; Abuchacra, Rodrigo Coutinho; Abuchacra, Paula Ferreira Falheiro; Neto, José Antônio Baptista; Borges, Heloísa Vargas; Oliveira, Vitor Calôr de

doi:10.1016/j.ecoenv.2016.07.012

Cited by 35 publications

(6 citation statements)

References 41 publications

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“…Our study revealed that ESBL-positive strains isolated from water samples carried bla CTX-M , bla GES , bla SHV , and bla TEM as well as genes related to copper and mercury resistance. The presence of heavy metals, such as lead, copper, chromium, and zinc has already been described in the GB, especially the northwest region, an area that can be classified as a hotspot of trace metal contamination [ 63 ]. Although there are reports of bla CTX-M , bla SHV , and bla TEM genes in this bacterial genus, there are few reports on Vibrio carrying bla GES [ 64 , 65 ].…”

Section: Discussionmentioning

confidence: 99%

Vibrio Species in an Urban Tropical Estuary: Antimicrobial Susceptibility, Interaction with Environmental Parameters, and Possible Public Health Outcomes

et al. 2021

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The genus Vibrio comprises pathogens ubiquitous to marine environments. This study evaluated the cultivable Vibrio community in the Guanabara Bay (GB), a recreational, yet heavily polluted estuary in Rio de Janeiro, Brazil. Over one year, 66 water samples from three locations along a pollution gradient were investigated. Isolates were identified by MALDI-TOF mass spectrometry, revealing 20 Vibrio species, including several potential pathogens. Antimicrobial susceptibility testing confirmed resistance to aminoglycosides, beta-lactams (including carbapenems and third-generation cephalosporins), fluoroquinolones, sulfonamides, and tetracyclines. Four strains were producers of extended-spectrum beta-lactamases (ESBL), all of which carried beta-lactam and heavy metal resistance genes. The toxR gene was detected in all V. parahaemolyticus strains, although none carried the tdh or trh genes. Higher bacterial isolation rates occurred in months marked by higher water temperatures, lower salinities, and lower phosphorus and nitrogen concentrations. The presence of non-susceptible Vibrio spp. was related to indicators of eutrophication and sewage inflow. DNA fingerprinting analyses revealed that V. harveyi and V. parahaemolyticus strains non-susceptible to antimicrobials might persist in these waters throughout the year. Our findings indicate the presence of antimicrobial-resistant and potentially pathogenic Vibrio spp. in a recreational environment, raising concerns about the possible risks of human exposure to these waters.

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Section: Discussionmentioning

confidence: 99%

Vibrio Species in an Urban Tropical Estuary: Antimicrobial Susceptibility, Interaction with Environmental Parameters, and Possible Public Health Outcomes

et al. 2021

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“…In CI4, Cu EFs become highly enriched since 1990's. This period coincides with an expansion of Brazilian participation in the international market and also of the enlargement of the Camaçari Industrial Complex (Bahia, 2013), which consequently increased the Comparing to highly industrialized and urban coastal systems such as Sepetiba (Wasserman et al, 2001) or Guanabara Bay ( de Carvalho Aguiar et al, 2016), Spanish bays (Casado-Martínez et al, 2006), Tagus (Cobelo-García et al, 2011), or New South Wales estuaries (Birch et al, 2015), the metals measured here indicated a much lower level of anthropogenic impacts. Although, this study did not test the toxicity of sediments, the large majority of metals concentrations, when compared to screening tools for environmental assessment, such as TEL, did not exceed recommended values.…”

Section: Evolution Of Trace Metalsmentioning

confidence: 54%

Chronology of anthropogenic impacts reconstructed from sediment records of trace metals and Pb isotopes in Todos os Santos Bay (NE Brazil)

Andrade

Hatje

Masqué

et al. 2017

Marine Pollution Bulletin

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The evolution of the impacts of anthropogenic activities in Todos os Santos Bay was evaluated by profiles of trace metals and Pb isotopes determined in sediment cores. Fluxes of metals increased up to 12, 4 and 2 times for Cu, Pb, and Zn, respectively, compared to those recorded in the beginning of the 20 century. Stable Pb isotopes identified a decommissioned lead smelter and burning of fossil fuels as the main sources of Pb. Most metals showed minor to moderate enrichment factors (EF<4), but Cu and Pb were highly enriched (EF=28 and 6, respectively) at the Aratu harbor. Temporal changes in sediments were associated to different activities, namely Pb smelting, burning of fossil fuels, maritime traffic, petroleum related activities, inputs of domestic effluents, and changes in land uses. The effects of the implementation of environmental policies to improve the waters of the bay could not be identified in the evaluated cores.

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“…This setting shows that the bay acts as a sink, especially for fine sediment particles. Nowadays, considering the alarming environmental quality of Guanabara Bay Fonseca et al, 2013;Abuchacra et al, 2015;Cordeiro et al, 2015;Fistarol et al, 2015;Abreu et al, 2016;Aguiar et al, 2016;Carvalho and Baptista Neto, 2016;Silva et al, 2016;Soares-Gomes et al, 2016), we assume that the bay acts as a sink not only for sediments but also for pollutants.…”

Section: Discussionmentioning

confidence: 99%

“…Amador (1997Amador ( , 2012 suggested that Guanabara Bay doubled in size during the Maximum Holocene Transgression (Angulo et al, 2006) and showed that it was drastically altered by post-colonial human induced activities. Guanabara Bay is surrounded by the metropolitan area of Rio de Janeiro and is considered a highly impacted environment, particularly in view of industrial activities, urban and agricultural runoff, trace metals, sewage discharge, anthropogenic debris, dredging, coastal interventions and landfills Fonseca et al, 2013;Abuchacra et al, 2015;Cordeiro et al, 2015;Fistarol et al, 2015;Aguiar et al, 2016;Carvalho and Baptista Neto, 2016;Silva et al, 2016;Soares-Gomes et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Northeast Guanabara Bay and Coastal Plain Holocene Sedimentary Evolution (Brazil): A Contribution

et al. 2017

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Sedimentological and radiocarbon investigations are part of an ongoing research on the Bay-head delta of northeast Guanabara Bay, Rio de Janeiro State. Sediment accumulation indicates that the Holocene infill of the bay-head delta started around 8.2 kyr BP and was not in pace with the eustatic sea-level rise. Sediment accumulation was faster during the transgressive phase (0.56 cm.yr -1 ). However, during the regressive phase, progradation driven by baselevel fall was predominant over vertical sediment accumulation (0.02 cm.yr -1 ). Based on coring, three sedimentary units were defined: fluvial sands (U1), estuarine deposits (U2) and fluvial mud (U3).

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Ecological risks of trace metals in Guanabara Bay, Rio de Janeiro, Brazil: An index analysis approach

Cited by 35 publications

References 41 publications

Vibrio Species in an Urban Tropical Estuary: Antimicrobial Susceptibility, Interaction with Environmental Parameters, and Possible Public Health Outcomes

Vibrio Species in an Urban Tropical Estuary: Antimicrobial Susceptibility, Interaction with Environmental Parameters, and Possible Public Health Outcomes

Chronology of anthropogenic impacts reconstructed from sediment records of trace metals and Pb isotopes in Todos os Santos Bay (NE Brazil)

Northeast Guanabara Bay and Coastal Plain Holocene Sedimentary Evolution (Brazil): A Contribution

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