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Treated acid mine drainage and stream recovery: Downstream impacts on benthic macroinvertebrate communities in relation to multispecies toxicity bioassays

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dc.contributor.author Steyn, Maronel
dc.contributor.author Oberholster, PJ
dc.contributor.author Botha, AM
dc.contributor.author Genthe, Bettina
dc.contributor.author Van den Heever-Kriek, PE
dc.contributor.author Weyers, C
dc.date.accessioned 2020-08-19T12:16:16Z
dc.date.available 2020-08-19T12:16:16Z
dc.date.issued 2019-04
dc.identifier.citation Steyn, M., Oberholster, P.J., Botha, A.M. 2019. Treated acid mine drainage and stream recovery: Downstream impacts on benthic macroinvertebrate communities in relation to multispecies toxicity bioassays. Journal of Environmental Management, vol 235, pp. 377-388 en_US
dc.identifier.issn 0301-4797
dc.identifier.issn 1095-8630
dc.identifier.uri https://doi.org/10.1016/j.jenvman.2019.01.051
dc.identifier.uri https://www.sciencedirect.com/science/article/pii/S0301479719300520
dc.identifier.uri http://hdl.handle.net/10204/11544
dc.description Copyright: 2019, Elsevier. Due to copyright restrictions, the attached PDF file contains the abstract of the full-text item. For access to the full-text item, please consult the publisher's website. en_US
dc.description.abstract The success and long term effectiveness of extensive and expensive engineering solutions to restore streams impacted by Acid Mine Drainage (AMD) is rarely tested. Concentrations of pollutants were measured in water along a longitudinal gradient from a stretch of the Tweelopie stream, South Africa, that receives pH-treated acid mine drainage (AMD) from an abandoned gold mine. The biotoxic effects of treated AMD were determined through macroinvertebrate biotic indices (SASS5) and a battery of toxicity bioassays. These included the L. sativa, A. cepa, D. magna toxicity and Ames mutagenicity tests, as well as an in vitro human liver cancer cell line HepG2. Even though the Tweelopie stream was moderately to severely degraded by multiple anthropogenic stressors, the impact of the treated AMD was masked by the improvement in the system downstream after mixing with the domestic wastewater effluent receiving stream, and subsequent further dilution as a result of the karst springs downstream. The general improvement of the system downstream was clearly shown by the decrease in the ecotoxicity and mutagenicity in relation to the in-stream macroinvertebrates. PCA multivariate analysis successfully displayed associations between the different environmental variables and the decrease in toxicity and subsequent ecosystem improvement downstream. This study indicated that environmental management of AMD remediation should consider long term assessment strategies, including multiple factors, to promote biological ecosystem recovery. en_US
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.relation.ispartofseries Workflow;23416
dc.subject Land use en_US
dc.subject Longitudinal impacts en_US
dc.subject Macroinvertebrates en_US
dc.subject Toxicity bioassays en_US
dc.subject Stream recovery en_US
dc.title Treated acid mine drainage and stream recovery: Downstream impacts on benthic macroinvertebrate communities in relation to multispecies toxicity bioassays en_US
dc.type Article en_US
dc.identifier.apacitation Steyn, M., Oberholster, P., Botha, A., Genthe, B., Van den Heever-Kriek, P., & Weyers, C. (2019). Treated acid mine drainage and stream recovery: Downstream impacts on benthic macroinvertebrate communities in relation to multispecies toxicity bioassays. http://hdl.handle.net/10204/11544 en_ZA
dc.identifier.chicagocitation Steyn, Maronel, PJ Oberholster, AM Botha, Bettina Genthe, PE Van den Heever-Kriek, and C Weyers "Treated acid mine drainage and stream recovery: Downstream impacts on benthic macroinvertebrate communities in relation to multispecies toxicity bioassays." (2019) http://hdl.handle.net/10204/11544 en_ZA
dc.identifier.vancouvercitation Steyn M, Oberholster P, Botha A, Genthe B, Van den Heever-Kriek P, Weyers C. Treated acid mine drainage and stream recovery: Downstream impacts on benthic macroinvertebrate communities in relation to multispecies toxicity bioassays. 2019; http://hdl.handle.net/10204/11544. en_ZA
dc.identifier.ris TY - Article AU - Steyn, Maronel AU - Oberholster, PJ AU - Botha, AM AU - Genthe, Bettina AU - Van den Heever-Kriek, PE AU - Weyers, C AB - The success and long term effectiveness of extensive and expensive engineering solutions to restore streams impacted by Acid Mine Drainage (AMD) is rarely tested. Concentrations of pollutants were measured in water along a longitudinal gradient from a stretch of the Tweelopie stream, South Africa, that receives pH-treated acid mine drainage (AMD) from an abandoned gold mine. The biotoxic effects of treated AMD were determined through macroinvertebrate biotic indices (SASS5) and a battery of toxicity bioassays. These included the L. sativa, A. cepa, D. magna toxicity and Ames mutagenicity tests, as well as an in vitro human liver cancer cell line HepG2. Even though the Tweelopie stream was moderately to severely degraded by multiple anthropogenic stressors, the impact of the treated AMD was masked by the improvement in the system downstream after mixing with the domestic wastewater effluent receiving stream, and subsequent further dilution as a result of the karst springs downstream. The general improvement of the system downstream was clearly shown by the decrease in the ecotoxicity and mutagenicity in relation to the in-stream macroinvertebrates. PCA multivariate analysis successfully displayed associations between the different environmental variables and the decrease in toxicity and subsequent ecosystem improvement downstream. This study indicated that environmental management of AMD remediation should consider long term assessment strategies, including multiple factors, to promote biological ecosystem recovery. DA - 2019-04 DB - ResearchSpace DP - CSIR KW - Land use KW - Longitudinal impacts KW - Macroinvertebrates KW - Toxicity bioassays KW - Stream recovery LK - https://researchspace.csir.co.za PY - 2019 SM - 0301-4797 SM - 1095-8630 T1 - Treated acid mine drainage and stream recovery: Downstream impacts on benthic macroinvertebrate communities in relation to multispecies toxicity bioassays TI - Treated acid mine drainage and stream recovery: Downstream impacts on benthic macroinvertebrate communities in relation to multispecies toxicity bioassays UR - http://hdl.handle.net/10204/11544 ER - en_ZA


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