Groundwater contributions to metal transport in a small river affected by mining and smelting waste

Coynel, Alexandra; Schäfer, Jörg; Dabrin, Aymeric; Girardot, Naïg; Blanc, Guillaume

doi:10.1016/j.watres.2007.04.019

Cited by 60 publications

(41 citation statements)

References 31 publications

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“…Several field studies showed that Cd contamination can persist many years in the environment because of its storage in sediment and its further release into the water column under favorable hydrodynamic conditions (Audry et al 2004a;Coynel et al 2007). This phenomenon could result in a longterm Cd bioaccumulation in various aquatic organisms, even in those living several hundreds of kilometers from the initial source of contamination (Baudrimont et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Molecular and phenotypic responses of Japanese medaka (Oryzias latipes) early life stages to environmental concentrations of cadmium in sediment

Barjhoux

Gonzalez

Baudrimont

et al. 2016

Environ Sci Pollut Res

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Japanese medaka embryos were exposed to environmental concentrations of cadmium (Cd) to investigate adverse and adaptive responses in fish early life stages. Embryos were exposed during their whole development by static sediment-contact to environmental Cd concentrations (2 and 20 μg/g dry weight). Cd bioaccumulation, developmental defects, biochemical and biomolecular (qRT-PCR) responses were analyzed in embryos and hatchlings. A dose-dependent increase of Cd bioaccumulation and developmental defects was observed at hatching. Cd had clear impacts on heartbeat and cardiac morphogenesis and also induced to spinal deformities. The profile and the level of gene transcription were differentially modulated according to the Cd concentration, the duration of exposure and/or the developmental stage of fish. Pro-apoptotic bax and DNA repair rad51 transcripts were significantly repressed in embryos exposed to the highest Cd concentration. Repression of these genes was correlated to the increase of heart rate in 6-day-old embryos. NADH-dehydrogenase nd5 gene transcription was inhibited in larvae at the lowest concentration suggesting mitochondrial respiratory chain impairment, in association with Cd-induced teratogenicity. Finally, wnt1 gene was overexpressed indicating putative deregulation of Wnt signaling pathway, and suggested to be implied in the occurrence of some spinal and cardiac deformities. Results of this study permitted to propose some promising markers at the transcriptional and phenotypical level, responding to environmental concentrations of Cd. The present work also highlights the usefulness of the modified version of the medaka embryo-larval assay with sediment-contact exposure (MELAc) to investigate the toxicity and the modes of action of sediment-bound pollutants.

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Section: Introductionmentioning

confidence: 99%

Molecular and phenotypic responses of Japanese medaka (Oryzias latipes) early life stages to environmental concentrations of cadmium in sediment

Barjhoux

Gonzalez

Baudrimont

et al. 2016

Environ Sci Pollut Res

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“…Since zinc ore treatment activity stopped in 1987 there has been a significant decrease in waste emission from the industrial site. Yet, the Riou-Mort watershed still exhibits high zinc (Zn) and cadmium (Cd) concentrations in water and in suspended particulate matter (Coynel et al 2007). A number of recent studies have assessed Cd accumulation and biological effects in several organisms in this industrial watershed (Duong et al 2008;Lacaze et al 2011) and, from the first trophic levels, Cd was still observed at all trophic levels.…”

Section: Introductionmentioning

confidence: 99%

Recovery potential of periphytic biofilms translocated in artificial streams after industrial contamination (Cd and Zn)

et al. 2012

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Metal wastes can significantly disturb aquatic communities, particularly photosynthetic organisms, the main primary producers in freshwater running ecosystems. In this study, biofilms and diatoms were used as bioindicators to characterize the kinetics of biofilm recovery. An experimental decontamination study was conducted under laboratory conditions, after biofilm colonisation at a site subject to discharge of industrial metals (Zn and Cd) and in parallel at an upstream site, metal-free, considered as a control. After 24 days of colonisation, biofilms were translocated and maintained in the laboratory for 56 days under clean conditions (control and decontamination) or metal contamination. Various tests were conducted from the community level--measures of metal bioaccumulation, cell densities and taxonomic investigations, to the individual level--measures of teratological forms. After 56 days of decontamination, Zn and Cd concentrations in decontaminated biofilms showed a sharp decline, respectively ranging from 6.7 ± 2 to 4 ± 2.5 mg Zn g⁻¹ DW and from 207.6 ± 24.5 to 45.4 ± 9.9 μg Cd g⁻¹ DW. However, at the end of the experiment bioaccumulations remained significantly higher than concentrations in control biofilms. Despite a diatom evolution in biofilm assemblages, taxonomic inventories did not demonstrate a complete restoration of diatom communities in biofilms under decontamination conditions compared with controls, since metal-resistant species initially present after colonisation at the contaminated site, such as Eolimna minima, persisted in high abundance in decontaminated biofilms. Biofilms kept under metal pressure showed very high bioaccumulation capacities and a sharp decline of species diversity which allowed identification of some resistant species. Regarding these first results on the behaviour of diatom biofilms under experimental decontamination conditions, improvement of the natural hydrosystem's chemical state appears quickly, but an eventual return to good ecological status appears delayed, with the persistence of metal-tolerant species even after 56 days.

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“…Coynel et al 2007), groundwater geochemistry is perhaps most strongly influenced by local bedrock and/or drift geology (Islam et al 2000;Gulec et al 2001). Mineralized bedrock will act as a source of metals to the local environment through physical and chemical weathering processes (Woo et al 2002).…”

Section: Introductionmentioning

confidence: 99%

Heavy metals in potable groundwater of mining-affected river catchments, northwestern Romania

Bird¹,

Macklin²,

Brewer³

et al. 2009

Environ Geochem Health

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Groundwater, accessed using wells and municipal springs, represents the major source of potable water for the human population outside of major urban areas in northwestern Romania, a region with a long history of metal mining and metallurgy. The magnitude and spatial distribution of metal contamination in private-supply groundwater was investigated in four mining-affected river catchments in Maramureş and Satu Mare Counties through the collection of 144 groundwater samples. Bedrock geology, pH and Eh were found to be important controls on the solubility of metals in groundwater. Peak metal concentrations were found to occur in the Lapuş catchment, where metal levels exceed Dutch target and intervention values in up to 49% and 14% of samples, respectively. A 700 m wide corridor in the Lapuş catchment on either side of the main river channel was identified in which peak Cd (31 μg l(-1)), Cu (50 μg l(-1)), Pb (50 μg l(-1)) and Zn (3,000 μg l(-1)) concentrations were found to occur. Given the generally similar bedrock geologies, lower metal levels in other catchments are believed to reflect differences in the magnitude of metal loading to the local environment from both metal mining and other industrial and municipal sources. Sampling of groundwater in northwestern Romania has indicated areas of potential concern for human health, where heavy metal concentrations exceed accepted environmental quality guidelines. The presence of elevated metal levels in groundwater also has implications for the implementation of the EU Water Framework Directive (WFD) and achieving 'good' status for groundwater in this part of the Danube River Basin District (RBD).

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Groundwater contributions to metal transport in a small river affected by mining and smelting waste

Cited by 60 publications

References 31 publications

Molecular and phenotypic responses of Japanese medaka (Oryzias latipes) early life stages to environmental concentrations of cadmium in sediment

Molecular and phenotypic responses of Japanese medaka (Oryzias latipes) early life stages to environmental concentrations of cadmium in sediment

Recovery potential of periphytic biofilms translocated in artificial streams after industrial contamination (Cd and Zn)

Heavy metals in potable groundwater of mining-affected river catchments, northwestern Romania

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