Environmental impact of mining activities in the Lousal area (Portugal): Chemical and diatom characterization of metal-contaminated stream sediments and surface water of Corona stream

Luís, Ana Teresa; Teixeira, Paula A. F.; Almeida, Salomé F.P.; Matos, João Xavier; Silva, Eduardo Ferreira da

doi:10.1016/j.scitotenv.2011.06.052

Cited by 131 publications

(72 citation statements)

References 55 publications

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“…This threshold was exceeded from the first week following translocation in M1, M2, M3 and MS, and increased with time of exposure, highlighting metal contamination. Abnormalities are increasingly used to evidence the deleterious impacts of metals in the field (Duong et al 2008, Ferreira da Silva et al 2009, Luís et al 2011. Here, the correlation with zinc bioaccumulation (R 2 = 0.25, p = 0.03) confirmed the reliability of this endpoint.…”

Section: Metal Contamination Induces Teratologiessupporting

confidence: 63%

“…The most cited ones are: teratologies (e.g. see Falasco et al 2009), decrease in individual and global cell sizes (Cattaneo et al 2004, Morin and Coste, 2006, Morin et al 2007, Luís et al 2011, mortality (Torres et al 1998) and shifts in assemblages towards a dominance of species growing close to the substrate or motile taxa (Medley and Clements, 1998, Cattaneo et al 2004). An in situ translocation experiment was undertaken in a Mediterranean river (called Riera d'Osor) to assess the responses of periphyton to a gradient of zinc contamination.…”

Section: Introductionmentioning

confidence: 99%

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Diatom responses to zinc contamination along a Mediterranean river

Morin¹,

Corcoll²,

Bonet³

et al. 2014

Plecevo

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Background and aims -Diatom-based water quality management is increasing, and specific indicators are required for the assessment of priority substances such as metals. We tested a variety of features of diatom communities, in a river exhibiting a gradient of zinc contamination (the Riera d'Osor, Spain), to determine the most relevant ones. Key results -Community composition changed over time of exposure, and with the intensity of metal contamination. Species richness was significantly lower at the most contaminated sites. Species composition was more even under background and low exposure levels, but low metal inputs selected for varieties of Cocconeis placentula (var. placentula, euglypta and lineata). Small taxa (Eolimna minina, or Achnanthidium minutissimum and A. pyrenaicum) dominated in the most contaminated sites, and deformed diatom cells were found abundant. Conclusions -Although species composition clearly responded to varied levels of zinc pollution, combining cell size classes or total biovolume of the community and percentages of deformities allowed reliable assessment of the presence, and intensity, of contamination. These descriptors present the major advantage of being independent of regional taxonomic peculiarities, thus providing robust assessment irrespective of the area studied.

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Section: Metal Contamination Induces Teratologiessupporting

confidence: 63%

Section: Introductionmentioning

confidence: 99%

Diatom responses to zinc contamination along a Mediterranean river

Morin¹,

Corcoll²,

Bonet³

et al. 2014

Plecevo

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show abstract

“…Responses of diatoms to metal pollution have generally been detected at the individual level (e.g., size, growth form, and morphological abnormalities) and/or through changes to community structure (replacement of sensitive species by tolerant ones or decrease in species diversity) (Morin et al 2012). For example, diatom cell size has been found to be a good indicator of high metal contamination in acid mine drainage regions (Luís et al 2011).…”

Section: Introductionmentioning

confidence: 99%

Short-term arsenic exposure reduces diatom cell size in biofilm communities

Barral-Fraga

Morin²,

Rovira

et al. 2015

Environ Sci Pollut Res

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Arsenic (As) pollution in water has important impacts for human and ecosystem health. In freshwaters, arsenate (As(V)) can be taken up by microalgae due to its similarity with phosphate molecules, its toxicity being aggravated under phosphate depletion. An experiment combining ecological and ecotoxicological descriptors was conducted to investigate the effects of As(V) (130 μg L(-1) over 13 days) on the structure and function of fluvial biofilm under phosphate-limiting conditions. We further incorporated fish (Gambusia holbrooki) into our experimental system, expecting fish to provide more available phosphate for algae and, consequently, protecting algae against As toxicity. However, this protection role was not fully achieved. Arsenic inhibited algal growth and productivity but not bacteria. The diatom community was clearly affected showing a strong reduction in cell biovolume; selection for tolerant species, in particular Achnanthidium minutissimum; and a reduction in species richness. Our results have important implications for risk assessment, as the experimental As concentration used was lower than acute toxicity criteria established by the USEPA.

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“…Mining activities are notorious for adverse environmental impacts, including pollution, habitat loss, soil erosion, and geological disasters (Salomons 1995;Klukanová and Rapant 1999;Aguilar et al 2004;Luís et al 2011). Among these environmental problems caused by mining activities, the production and dispersion of atmospheric particles has become a great concern in recent years (Kaonga and Kgabi 2011;Chen et al 2013;Serbula et al 2014).…”

Section: Introductionmentioning

confidence: 99%

Risk assessment of atmospheric heavy metals exposure in Baotou, a typical industrial city in northern China

Liang

Wang

2015

Environ Geochem Health

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Industrial activities have led to serious air pollution and the potentially toxic elements in atmospheric particles can cause various health problems to humans. In this study, inhalable particulate matter (PM 10 ) and fine particles (PM 2.5 ) were collected from four typical sites in Baotou, an industrial city in northern China. We investigated both the mass concentrations of particulate matter and the concentrations of heavy metals (Cr, Ni, Pb, Cd, Cu, Mn, Co, and Zn) in the collected samples. We assessed the public health risks associated with atmospheric heavy metal exposure. The results showed that the mass concentrations of PM 2.5 and PM 10 as well as these heavy metal concentrations varied notably influenced by the prevailing wind directions. Among the studied metals, Zn, Mn, Pb, and Cr were the main metal pollutants in both PM 10 and PM 2.5 . The results of the health assessment showed that the eight heavy metals studied pose significant non-carcinogenic risks and Cr, Cd, and Co pose lifetime lung cancer risks to local residents, especially to children.

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Environmental impact of mining activities in the Lousal area (Portugal): Chemical and diatom characterization of metal-contaminated stream sediments and surface water of Corona stream

Cited by 131 publications

References 55 publications

Diatom responses to zinc contamination along a Mediterranean river

Diatom responses to zinc contamination along a Mediterranean river

Short-term arsenic exposure reduces diatom cell size in biofilm communities

Risk assessment of atmospheric heavy metals exposure in Baotou, a typical industrial city in northern China

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