Integral assessment of pollution in the Suquía River (Córdoba, Argentina) as a contribution to lotic ecosystem restoration programs

Merlo, Carolina; Abril, Adriana; Amé, María Valeria; Argüello, Gustavo A.; Carreras, Hebe Alejandra; Chiappero, Malisa S.; Hued, Andrea Cecilia; Wannaz, Eduardo Daniel; Galanti, Lucas Nicolás; Monferrán, Magdalena V.; González, Cristian; Solı́s, V.

doi:10.1016/j.scitotenv.2011.08.037

Cited by 54 publications

(23 citation statements)

References 64 publications

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“…Além disso, os parâmetros físico-químicos estabelecidos nas legislações ambientais não são capazes de distinguir entre compostos biodisponíveis e compostos inertes, limitando a avaliação de risco ambiental (Kieling-Rubio et al, 2015). A identificação de poluentes isolados não considera os efeitos aditivos, sinérgicos ou antagônicos de suas combinações no ambiente (Merlo et al, 2011).…”

Section: Introductionunclassified

“…Bioindicadores vêm sendo integrados em estudos de qualidade ambiental, com a vantagem de permitirem inferências acerca do efeito tóxico dos poluentes sobre a biota, a partir da interpretação das respostas destes organismos (Merlo et al, 2011). Tradescantia pallida (Rose) D.R.…”

Section: Introductionunclassified

“…Hunt var. purpurea Boom é uma espécie bioindicadora de genotoxicidade ambiental (Merlo et al, 2011;Pereira et al, 2013), e o bioensaio Trad-MCN permite a quantificação de micronúcleos (MCN) nas células-mãe de grãos de pólen em fase de tétrades, decorrentes da exposição das plantas a agentes com potencial genotóxico (Ma et al, 1994). Porém, este bioensaio ainda é pouco explorado para avaliação da genotoxicidade de água, e apenas mais recentemente estudos vêm sendo direcionados para corpos hídricos na Bacia do Rio dos Sinos (Cassanego et al, 2014;Endres-Júnior et al, 2015;Kieling-Rubio et al, 2015).…”

Section: Introductionunclassified

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Avaliação integrada da qualidade química e da genotoxicidade da água do arroio Luiz Rau, no trecho inferior da Bacia do Rio dos Sinos, no Sul do Brasil

Petry¹,

Costa²,

Benvenuti³

et al. 2016

Rev. ambiente água

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RESUMOA qualidade química e a genotoxicidade da água do arroio Luiz Rau em Novo Hamburgo (Rio Grande do Sul, Brasil) e a relação entre os danos genéticos observados em Tradescantia pallida var. purpurea e parâmetros químicos foram analisados. Amostras de água foram coletadas bimestralmente, entre setembro de 2012 e março de 2013 em dois sítios: próximo à nascente (S1) e próximo à foz (S2) do arroio. Ramos com botões florais foram expostos à água dos sítios e à água destilada (controle negativo). Frequências de micronúcleos (MCN) foram determinadas em células-mãe de pólen. Os seguintes parâmetros químicos: pH, sólidos dissolvidos totais, demanda bioquímica de oxigênio (DBO 5 ), oxigênio dissolvido, fósforo total (PT) e os elementos-traço cádmio, chumbo, cobre, cromo total e zinco foram analisados. Em todas as amostragens, as frequências de MCN observadas nos botões florais expostos à água dos dois sítios foram significantemente superiores (S1: 2,48 a 3,38, S2: 3,24 a 5,19) às observadas nos respectivos controles negativos (1,33 a 1,62). O PT esteve acima do limite legal ao longo de todo o período monitorado e a DBO 5 apresentou concentrações maiores àquelas estabelecidas pela legislação em dois meses no S1 e em três meses no S2. A análise de componentes principais mostrou relação entre a frequência de MCN, a DBO 5 e o PT, indicando a influência negativa de poluentes presentes na água sobre a espécie bioindicadora e reforçando a importância de se considerar os fatores ambientais de forma integrada em programas de monitoramento de corpos hídricos. between the genetic damage observed in Tradescantia pallida var. purpurea and the chemical parameters analyzed. Water samplings were collected bimonthly from September 2012 to March 2013 from two sites, near the headspring (S1) and near the mouth (S2). Cuttings with flower buds were exposed to water from the sites and distilled water (negative control). Micronuclei (MCN) frequencies were determined in pollen mother cells. The chemical parameters analyzed were pH, total dissolved solids, biochemical oxygen demand (DBO 5 ), dissolved oxygen, total phosphorus (TP) and the trace elements cadmium, lead, copper, total chromium and zinc. In all samplings, the MCN frequencies observed in buds exposed to water from both sites were significantly higher (S1: 2.48 to 3.38, S2: 3.24 to 5.19) than those observed in the respective negative controls (1.33 to 1.62). The TP was above the legal limit throughout the monitored period and DBO 5 presented concentrations higher than those established by legislation in two months at S1 and three months at S2. The principal component analysis showed a relationship between MCN frequency, DBO 5 and TP, pointing to the negative influence of pollutants present in water on the bioindicator species and reinforcing the importance of considering the environmental factors in an integrated way in water-body monitoring programs.

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Section: Introductionunclassified

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Avaliação integrada da qualidade química e da genotoxicidade da água do arroio Luiz Rau, no trecho inferior da Bacia do Rio dos Sinos, no Sul do Brasil

Petry¹,

Costa²,

Benvenuti³

et al. 2016

Rev. ambiente água

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Section: Introductionmentioning

confidence: 99%

“…Further, atmospheric emissions remain not restricted to this compartment because of pollutant volatilization, dispersal and deposition mechanisms (Jahnke et al, 2007;Merlo et al, 2011). Despite this, the majority of risk assessment studies of atmospheric pollutants are based on concentrations detected by chemical analyses for simple substances and the synergic and genotoxic effects of complex mixtures of these compounds are still poorly known (Savóia et al, 2009;Merlo et al, 2011). Over recent years, studies have begun to integrate biological indicators with physical and chemical parameters, with the goal of identifying genetic changes that may occur in organisms as a result of the environmental conditions in which they live or after exposure as active indicators in environments that are supposedly polluted (Meireles et al, 2009;Savóia et al, 2009;Carreras et al, 2013;Pereira et al, 2013).…”

Section: Introductionmentioning

confidence: 99%

Biomonitoring the genotoxic potential of the air on Tradescantia pallida var. purpurea under climatic conditions in the Sinos River basin, Rio Grande do Sul, Brazil

et al. 2015

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The present study evaluated the genotoxic effects of the atmospheric air on Tradescantia pallida var. purpurea in urban areas with different intensities of vehicular traffic and in riparian forest fragments in the Sinos River Basin (Rio Grande do Sul, Brazil), considering the influence of climatic conditions prevailing in these environments. Bimonthly, from May 2012 to March 2013, cuttings with flower buds were exposed for 8 h in urban and riparian forest environments in the municipalities of Caraá, Taquara and Campo Bom in the upper, middle and lower sections, respectively, of the Sinos River Basin. Simultaneously, negative controls were made and climatic data were recorded. Micronuclei (MCN) frequencies were determined in young tetrads of pollen mother cells and expressed as MCN/100 tetrads. Significantly higher MCN frequencies were observed in buds exposed in urban and riparian forest environments in Taquara (up to 7.23 and 4.80, respectively) and Campo Bom (up to 4.90 and 4.23, respectively) than in buds exposed in Caraá (up to 2.90 and 2.50, respectively), in the majority of samplings, and in relation to the negative control (up to 1.93) in all months. Over the course of the period monitored, there were significant variations in MCN frequencies at all sampling points, with the exception of the urban environment in Caraá. For the urban environments, relation between the MCN frequency, vehicular traffic and mean temperature was observed. For the riparian forest fragments, there was no association between MCN frequency and climatic factors. Tradescantia pallida var. purpurea can be considered a useful tool to point out areas with increased atmospheric pollution, since the exposure of plants under severe climatic conditions is avoided to minimize their negative influence on the formation of micronuclei.Keywords: abiotic factors, vehicular emissions, bioindicator, environmental quality, micronucleus. Biomonitoramento do potencial genotóxico do ar em

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Organic Pollutants in the Suquía River Basin

Santiago

Bonansea

Valdés

2015

The Handbook of Environmental Chemistry

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Integral assessment of pollution in the Suquía River (Córdoba, Argentina) as a contribution to lotic ecosystem restoration programs

Cited by 54 publications

References 64 publications

Avaliação integrada da qualidade química e da genotoxicidade da água do arroio Luiz Rau, no trecho inferior da Bacia do Rio dos Sinos, no Sul do Brasil

Avaliação integrada da qualidade química e da genotoxicidade da água do arroio Luiz Rau, no trecho inferior da Bacia do Rio dos Sinos, no Sul do Brasil

Biomonitoring the genotoxic potential of the air on Tradescantia pallida var. purpurea under climatic conditions in the Sinos River basin, Rio Grande do Sul, Brazil

Organic Pollutants in the Suquía River Basin

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