A description of mercury in fishes from the Madeira River Basin, Amazon, Brazil

Bastos, Wanderley Rodrigues; Rebelo, Mauro de Freitas; Fonseca, Márlon de Freitas; Almeida, Ronaldo de; Malm, Olaf

doi:10.1590/s0044-59672008000300006

Cited by 40 publications

(19 citation statements)

References 13 publications

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“…For this species, 54% of the samples had detectable mercury levels and for 60% the WHO limit was exceeded. Bastos et al (2008) found 0.727 µg.g −1 for P. hemioliopterus and 0.66 µg.g −1 for P. fasciatum in the Madeira River. Legg et al (2015) describe a significant correlation between mercury found in the hair and the amount of fish consumed by people surveyed in French Guiana, mostly for those people who showed preference for the most susceptible fish species to mercury contamination, including P. fasciatum and H. aimara.…”

Section: Discussionmentioning

confidence: 91%

“…Despite being a very popular fish in the sampled areas, this species is not very recurrent in similar studies in Guianas and Suriname, except for Maury-Brachet et al (2006), who found 2.67±0.52 µg.g −1 for Ageneiosus brevifilis in French Guiana (another species of the same genus and with the same common name in Brazil). In studies on the Madeira River, Bastos et al (2008) found the average value of 0.851 µg.g −1 for A. brevifilis. Regarding the species collected in the Jari River (P. fasciatum, P. hemioliopterus and H. armatus), all fish caught had detectable levels of mercury, but only H.armatus showed an average level above the WHO reference value.…”

Section: Discussionmentioning

confidence: 97%

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Mercury Contamination within Protected Areas in the Brazilian Northern Amazon-Amapa State

Venturieri¹,

Oliveira‐da‐Costa²,

Gama³

et al. 2017

American Journal of Environmental Sciences

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Mercury contamination is a long-standing environmental and social problem, notably in the Amazon. The widespread use of mercury in artisanal and small-scale gold mining has driven contamination of the environment and the people, threatening biodiversity, human health and livelihoods of traditional populations. Along the border area between Brazil and French Guiana, illegal gold mining is considered a critical threat to biodiversity, a social and economic problem and a political and diplomatic issue. On the Brazilian side in Amapá state, stands the world´s largest tropical forest National Park-Tumucumaque National Park (TNP). Despite its critical importance for the maintenance of ecosystem services, little is known about anthropic impacts in the area, including mercury contamination. The present study aims to assess the current levels of mercury contamination of carnivorous fish species in the TNP region as the starting point for the assessment of its impact over the integrity of protected areas and local communities. Fish samples were collected at 33 sampling sites within TNP and its surroundings. Samples of 187 most consumed local fish belonging to eight carnivore species were analyzed. Mercury was detected in 81% of the collected fish, the majority of them with individual levels above the WHO health safety limit (0.5 µg.g −1 ). Furthermore, samples from all rivers assessed presented some level of contamination. The contamination of important locally consumed fish is widespread in the study area. Important river basins in the Northern Amazon area are affected and even protected areas might be impacted by mercury. Our results suggest mercury as a significant threat to biodiversity and human health in the region. Additional studies should be conducted towards identifying the extent of the problem in the region and mitigation strategies addressing the effects of contamination must be incorporated in decision makers' priority agenda.

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Section: Discussionmentioning

confidence: 91%

Section: Discussionmentioning

confidence: 97%

Mercury Contamination within Protected Areas in the Brazilian Northern Amazon-Amapa State

Venturieri¹,

Oliveira‐da‐Costa²,

Gama³

et al. 2017

American Journal of Environmental Sciences

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“…Nesse caso, ao contrário do que se observa com os coesos da Austrália (hardsetting), país pioneiro no uso de PAM para redução de coesão (ALMEIDA, 2008), a ação da PAM aplicada isoladamente foi melhor quando comparada ao tratamento combinado (PAM + gesso).…”

Section: Resultsunclassified

“…As pesquisas recentes sobre o assunto podem ser encontradas em Almeida (2008), Almeida, Raiane e Almeida (2012), Melo (2013), Andrade (2014) e Marcelo (2015).…”

Section: Introductionunclassified

Untitled

2016

Rev. Bras. Ciênc. Ambient. (Online)

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R e v i s t a B r a s i l e i r a d e C i ê n c i a s A m b i e n t a i s Editor GeralMaurício Dziedzic Editores InternacionaisGünter Gunkel -Alemanha Jose Alfaro Joins -EUA Manuela Morais -Portugal Oscar Parra -Chile Editores NacionaisAdriana Fundamental para esse processo foi a adoção de um processo de pré-seleção dos artigos para que cada editor pudesse analisar rapidamente as submissões e definir se devem seguir para o processo de revisão, ou se devem ser rejeitadas.A função da revista é a divulgação científica. Para tanto, é essencial que os trabalhos submetidos tragam contribuição científica para a área. Trabalhos de aplicação de princípios conhecidos não representam contribuição científica e não são aceitos para publicação.A tabela com os critérios de avaliação de artigos, disponível no regulamento da revista -em http://abes-dn.org.br/ publicacoes/rbciamb/Regulamento%20RBCiamb.pdf -, apresenta uma lista detalhada dos itens que são verificados. É recomendável que os autores utilizem esses critérios para efetuar a autoavaliação de seus trabalhos antes da submissão, pois a observância desses critérios pode acelerar substancialmente o processo de revisão.Encerrando mais um ano, aproveito para agradecer o excelente trabalho voluntário realizado pelos editores e revisores em prol das Ciências Ambientais. A lista completa de editores e revisores que colaboraram com a RBCiAmb em 2016 é apresentada no final da revista. ABSTRACTVehicles are the main source of air pollutants in urban centers. The most important technologies for the reduction of vehicle pollutants have been the electronic control of fuel injection and the use of catalytic converters in the exhaust system of vehicles. The goal of this work was to evaluate if the renewal of the vehicle fleet altered the air quality in Curitiba. A survey of historical concentrations of air pollutants was performed for the period of 2003 to 2014. It was also carried out the survey of the history of the fleet of vehicles in Curitiba, based on data from the transit department of Paraná (DETRAN-PR). There was a 65% increase in the number of vehicles, which did not result in an increase in the concentration of pollutants. The values of air pollutant concentrations show a decrease over the surveyed period. The conclusion is that the renewal of the fleet provided an improvement of the air quality in Curitiba.Keywords: vehicle emissions; air pollutants; air pollution indexes. INTRODUÇÃOA emissão de poluentes atmosféricos em grandes centros está relacionada à frota veicular que circula pelas vias, e a idade dos veículos é um fator determinante para a qualidade do ar (KUHNS et al., 2004; KRECL et al., 2015). Isso porque conduções com maior desgaste de peças e com tecnologias ultrapassadas podem contribuir com até 34% da emissão total de CO, NO e hidrocarbonetos em uma cidade (GUO et al., 2006). Além dos automóveis, as motocicletas possuem um papel importante nas emissões atmosféricas. Em estudo sobre motocicletas de Taiwan, Tsai et al. (2000) investigaram as emissões de CO, N...

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“…A bioacumulação consiste no aumento da concentração de Hg no indivíduo (NRIAGU, 1979;MEILI, 1997), e a biomagnificação consiste no aumento das concentrações de Hg entre os níveis da cadeia alimentar BASTOS et al, 2008). A estrutura e o tamanho da cadeia alimentar exercem influência na concentração de HgT e MeHg (CABANA & RASMUSSEN, 1994;KIDD et al, 2003;JARDINE et al, 2013).…”

Section: -Biomagnificação E Bioacumulação De Hg No Rio Madeiraunclassified

Avaliação da dinâmica do mercúrio (Hg) na Bacia do Rio Madeira nos ambientes lêntico e lótico

Neto¹,

de²

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A description of mercury in fishes from the Madeira River Basin, Amazon, Brazil

Cited by 40 publications

References 13 publications

Mercury Contamination within Protected Areas in the Brazilian Northern Amazon-Amapa State

Mercury Contamination within Protected Areas in the Brazilian Northern Amazon-Amapa State

Untitled

Avaliação da dinâmica do mercúrio (Hg) na Bacia do Rio Madeira nos ambientes lêntico e lótico

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