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Ecotoxicological assessment after the world’s largest tailing dam collapse (Fundão dam, Mariana, Brazil): effects on oribatid mites

Buch, Andressa Cristhy ; Sautter, Klaus Dieter ; Marques, Eduardo Duarte ; Silva-Filho, Emmanoel Vieira

Environmental geochemistry and health, 2020-11, Vol.42 (11), p.3575-3595 [Periódico revisado por pares]

Dordrecht: Springer Netherlands

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Título:
Ecotoxicological assessment after the world’s largest tailing dam collapse (Fundão dam, Mariana, Brazil): effects on oribatid mites
Autor: Buch, Andressa Cristhy ; Sautter, Klaus Dieter ; Marques, Eduardo Duarte ; Silva-Filho, Emmanoel Vieira
Assuntos: Aluminum ; Animals ; Aquatic ecosystems ; Bioaccumulation ; Biological development ; Brazil ; Cadmium ; Chromium ; Copper ; Density ; Earth and Environmental Science ; Ecosystem ; Ecotoxicology - methods ; Environment ; Environmental Chemistry ; Environmental effects ; Environmental Health ; Environmental Monitoring ; Geochemistry ; Heavy metals ; Iron ; Laboratories ; Lead ; Manganese ; Mercury ; Mercury (metal) ; Metals - pharmacokinetics ; Metals - toxicity ; Mine tailings ; Mine wastes ; Mining ; Mites ; Mites - drug effects ; Mites - physiology ; Nickel ; Original Paper ; Population Density ; Public Health ; Soil ; Soil contamination ; Soil Pollutants - analysis ; Soil Pollutants - pharmacokinetics ; Soil Pollutants - toxicity ; Soil Science & Conservation ; Structure Collapse ; Survival ; Tailings ; Terrestrial environments ; Terrestrial Pollution ; Trace Elements - pharmacokinetics ; Trace Elements - toxicity ; Trace metals ; Zinc
É parte de: Environmental geochemistry and health, 2020-11, Vol.42 (11), p.3575-3595
Descrição: Worldwide, environmental tragedies involving mining dam ruptures have become more frequent. As occurred a few years ago in Brazil (on 5 November 2015, in Minas Gerais state) the Fundão Dam rupture released 60 million m 3 of tailings into terrestrial and aquatic ecosystems. Since then, little information on the ecotoxicity of these tailings has been disclosed. In the laboratory, the acute, chronic and bioaccumulation effects of increased Fundão tailing concentrations on oribatid mites ( Scheloribates praeincisus ) were assessed. Additionally, the bioaccumulation of 11 trace metals (Al, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb and Zn) and the total density of oribatid mites found in the areas contaminated by the Fundão tailings were determined. The percentages of mite survival and reproductive inhibition were higher than 60% and 80%, respectively, in all contaminated areas with the highest concentration (100% mine tailings). Field studies showed an expressive reduction in the total density of oribatids per m −2 (up to 54 times) in the contaminated areas compared with the reference area. Metal accumulations in the field were 5.4 and 3.2 higher (for Ni and Hg, respectively) and up to two times higher (for most metals) than those in the laboratory for 42 days. The mite responses to the Fundão tailings found in this study suggest long-term interference in their biological development. In this sense, we can conclude that the introduction of mine tailings onto soils tended to compromise the functionality of the mites in the ecosystem, which causes imbalances to cascade other organisms of the trophic web. Graphic abstract
Editor: Dordrecht: Springer Netherlands
Idioma: Inglês

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Ecotoxicological assessment after the world’s largest tailing dam collapse (Fundão dam, Mariana, Brazil): effects on oribatid mites

Buch, Andressa Cristhy ; Sautter, Klaus Dieter ; Marques, Eduardo Duarte ; Silva-Filho, Emmanoel Vieira

Dordrecht: Springer Netherlands

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