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Ecotoxicological Assessment of the Doce River Surface Water After the Fundão Dam Collapse.
Integrated Environmental Assessment and Management ( IF 3.0 ) Pub Date : 2020-07-21 , DOI: 10.1002/ieam.4291 Lucas Bueno Mendes 1 , Fernando Aquinoga de Mello 1 , Kátia Regina Chagas 1 , Rodolfo Pessotti Messner Campelo 2 , Laila Carine Campos Medeiros 3 , Ross Edward William Smith 4 , Tatiana Heid Furley 1
Integrated Environmental Assessment and Management ( IF 3.0 ) Pub Date : 2020-07-21 , DOI: 10.1002/ieam.4291 Lucas Bueno Mendes 1 , Fernando Aquinoga de Mello 1 , Kátia Regina Chagas 1 , Rodolfo Pessotti Messner Campelo 2 , Laila Carine Campos Medeiros 3 , Ross Edward William Smith 4 , Tatiana Heid Furley 1
Affiliation
On 5 November 2015, the Samarco Fe ore mining operations released approximately 50 million cubic meters of mining waste into the environment, due to a dam collapse. Aiming at understanding the potential effects on the Doce River, different regions of the course of tailings were monitored using acute and chronic ecotoxicological tests with 4 species: Ceriodaphnia dubia, Daphnia similis, Danio rerio, and Vibrio fischeri. The results showed no acute toxicity for water column organisms. However, chronic toxicity was observed with the tests with the microcrustacean C. dubia, mainly related to the physical effects of the passage of flood wave and increased suspended solids, given that toxicity was reduced after filtering the samples. The results showed different magnitudes of impact among the upper, middle, and lower Doce River, with greater impact close to the dam failure area. Integr Environ Assess Manag 2020;16:608–614. © 2020 SETAC
中文翻译：
Fundão大坝坍塌后多西河地表水的生态毒理学评估。
2015年11月5日，由于水坝倒塌，Samarco铁矿石采矿业务向环境中释放了约5000万立方米的采矿废料。为了了解对Doce河的潜在影响，使用了4种物种的急性和慢性生态毒理学测试监测了尾矿处理过程的不同区域：杜鹃花，水蚤（Daphnia similis），达里奥（Danio rerio）和费氏弧菌（Vibrio fischeri）。结果表明对水柱生物没有急性毒性。然而，用微甲壳类C. dubia进行的试验观察到了慢性毒性。，主要与洪水波通过的物理效应和增加的悬浮固体有关，因为过滤样品后毒性降低了。结果表明，在多塞河上，中和下段的影响程度不同，靠近大坝破坏区的影响更大。Integr环境评估管理2020； 16：608-614。©2020 SETAC
更新日期：2020-07-21
中文翻译：
Fundão大坝坍塌后多西河地表水的生态毒理学评估。
2015年11月5日，由于水坝倒塌，Samarco铁矿石采矿业务向环境中释放了约5000万立方米的采矿废料。为了了解对Doce河的潜在影响，使用了4种物种的急性和慢性生态毒理学测试监测了尾矿处理过程的不同区域：杜鹃花，水蚤（Daphnia similis），达里奥（Danio rerio）和费氏弧菌（Vibrio fischeri）。结果表明对水柱生物没有急性毒性。然而，用微甲壳类C. dubia进行的试验观察到了慢性毒性。，主要与洪水波通过的物理效应和增加的悬浮固体有关，因为过滤样品后毒性降低了。结果表明，在多塞河上，中和下段的影响程度不同，靠近大坝破坏区的影响更大。Integr环境评估管理2020； 16：608-614。©2020 SETAC
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