Biochemical response and metals bioaccumulation in planktonic communities from marine areas impacted by the Fundão mine dam rupture (southeast Brazil).

Autor:	Marques JA; Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Av. Itália, s/n, Carreiros, Rio Grande, RS, Brazil; Fundação Espírito-santense de Tecnologia - FEST. Av. Fernando Ferrari, 845 - Goiabeiras, Vitória, ES, Brazil. Electronic address: jmarques.oceano@gmail.com., Costa SR; Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Av. Itália, s/n, Carreiros, Rio Grande, RS, Brazil; Fundação Espírito-santense de Tecnologia - FEST. Av. Fernando Ferrari, 845 - Goiabeiras, Vitória, ES, Brazil., Maraschi AC; Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Av. Itália, s/n, Carreiros, Rio Grande, RS, Brazil; Fundação Espírito-santense de Tecnologia - FEST. Av. Fernando Ferrari, 845 - Goiabeiras, Vitória, ES, Brazil., Vieira CED; Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Av. Itália, s/n, Carreiros, Rio Grande, RS, Brazil; Fundação Espírito-santense de Tecnologia - FEST. Av. Fernando Ferrari, 845 - Goiabeiras, Vitória, ES, Brazil., Costa PG; Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Av. Itália, s/n, Carreiros, Rio Grande, RS, Brazil; Fundação Espírito-santense de Tecnologia - FEST. Av. Fernando Ferrari, 845 - Goiabeiras, Vitória, ES, Brazil., de Martinez Gaspar Martins C; Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Av. Itália, s/n, Carreiros, Rio Grande, RS, Brazil; Fundação Espírito-santense de Tecnologia - FEST. Av. Fernando Ferrari, 845 - Goiabeiras, Vitória, ES, Brazil., Santos HF; Fundação Espírito-santense de Tecnologia - FEST. Av. Fernando Ferrari, 845 - Goiabeiras, Vitória, ES, Brazil; Departamento de Biologia Marinha, Universidade Federal Fluminense (UFF), Niterói, RJ, Brazil., Souza MM; Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Av. Itália, s/n, Carreiros, Rio Grande, RS, Brazil; Fundação Espírito-santense de Tecnologia - FEST. Av. Fernando Ferrari, 845 - Goiabeiras, Vitória, ES, Brazil., Sandrini JZ; Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Av. Itália, s/n, Carreiros, Rio Grande, RS, Brazil; Fundação Espírito-santense de Tecnologia - FEST. Av. Fernando Ferrari, 845 - Goiabeiras, Vitória, ES, Brazil., Bianchini A; Programa de Pós-Graduação em Ciências Fisiológicas, Instituto de Ciências Biológicas, Universidade Federal do Rio Grande (FURG), Av. Itália, s/n, Carreiros, Rio Grande, RS, Brazil; Fundação Espírito-santense de Tecnologia - FEST. Av. Fernando Ferrari, 845 - Goiabeiras, Vitória, ES, Brazil.
Jazyk:	angličtina
Zdroj:	The Science of the total environment [Sci Total Environ] 2022 Feb 01; Vol. 806 (Pt 3), pp. 150727. Date of Electronic Publication: 2021 Oct 02.
DOI:	10.1016/j.scitotenv.2021.150727
Abstrakt:	The rupture of the Fundão dam (Mariana, MG, southeast Brazil) released a huge flood of mine tailings to Doce river basin and its adjacent coastal area, in November 2015. This catastrophic event exposed aquatic communities to metal contamination related to mine tailings, but its biological effects are still poorly understood. This study investigates how biochemical response related to metal exposure vary between locations and seasons during the years of 2018-2020, in planktonic communities (micro and mesoplankton). Marine microplankton collected in sectors in front and south of the Doce river mouth presented the highest lipid peroxidation (LPO) and induction of metallothioneins (MT). Mesoplankton collected in sectors in front and north of the Doce river mouth presented highest LPO, while MT in this size class did not respond to a clear spatial pattern. Our results showed that metals affected biomarkers in a non-linear pattern and highlighted the complex relationship between metals, biochemical parameters, and seasonality. The variation in biochemical biomarkers indicates physiological stress related to metals, once sectors contaminated by metals, especially Fe, Mn and Cd, presented stronger biochemical responses. Comparison of metal levels with bioaccumulation data collected before the impact indicates Fe, Cd, Cr and Cu more than 2-fold higher after disaster in sectors closer to the river. Literature showed that these sectors present zooplanktonic assemblages with lower biomass and biodiversity, suggesting that the opportunistic species that thrives in the area are also under biochemical stress, but possibly relies on repair or defense mechanisms. The physiological stress detected by this study is possibly related to the mine tailings, considering the metals that stood out and the proximity with the Doce river mouth. This suggests that the impacts related to the failure of Fundão dam are still affecting the marine planktonic community even three to four years after the environmental disaster. Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. (Copyright © 2021 Elsevier B.V. All rights reserved.)
Databáze:	MEDLINE
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