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dc.contributor.authorMaboeta, M.S.
dc.contributor.authorOladipo, O.G.
dc.contributor.authorBotha, S.M.
dc.identifier.citationMaboeta, M.S. et al. 2018. Ecotoxicity of mine tailings: unrehabilitated versus rehabilitated. Bulletin of environmental contamination and toxicology, 100(5):702-707. []en_US
dc.identifier.issn1432-0800 (Online)
dc.description.abstractEarthworms are bioindicators of soil pollution. The ecotoxicity of tailings from selected gold mines in South Africa was investigated utilizing Eisenia andrei bioassays and biomarkers. Samples were obtained from unrehabilitated, rehabilitated and naturally vegetated sites. Biomass, neutral red retention time (NRRT), survival and reproduction were assessed using standardized protocols. Earthworm biomass, NRRT and reproductive success in rehabilitated tailings (comparable to naturally vegetated site) were significantly higher (p < 0.05) than in unrehabilitated tailings. In addition, significantly lower (p < 0.05) body tissue concentrations of As, Cd, Co, Cu and Ni contents were found in the rehabilitated tailings compared to the unrehabilitated. Further, significantly lower (p < 0.05) soil Mn and Zn concentrations were obtained in unrehabilitated tailings than the rehabilitated and naturally vegetated sites. Overall, reduced ecotoxicity effects were confirmed in rehabilitated compared to unrehabilitated tailings. This suggests that rehabilitation as a post-mining restorative strategy has strong positive influence on mine tailingsen_US
dc.subjectEisenia andreien_US
dc.subjectGold mine tailingsen_US
dc.subjectSoil pollutionen_US
dc.subjectRehabilitated and unrehabilitated sitesen_US
dc.subjectPost-mining restoration strategyen_US
dc.titleEcotoxicity of mine tailings: unrehabilitated versus rehabilitateden_US
dc.contributor.researchID12407216 - Maboeta, Mark Steve
dc.contributor.researchID26940582 - Oladipo, Oluwatosin Gbemisola

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