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Sökning: onr:"swepub:oai:DiVA.org:lnu-98358" > Adaption of microbi...

Adaption of microbial communities to the hostile environment in the Doce River after the collapse of two iron ore tailing dams

Giongo, Adriana (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil;Univ Reg Blumenau FURB, Brazil
dos Anjos Borges, Luiz Gustavo (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
Marconatto, Leticia (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
visa fler...
Palhano, Pamela de Lara (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
Serbent, Maria Pilar (författare)
Univ Reg Blumenau FURB, Brazil;Univ Estado Santa Catarina UDESC, Brazil
Moreira-Silva, Eduardo (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
Siqueira, Tiago de Abreu (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
Martinho, Caroline Thais (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
Barili, Rosalia (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
Paz, Lisie Valeria (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
Moser, Leticia Isabela (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
Verissimo, Carolina De Marco (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
Ketzer, João Marcelo (författare)
Linnéuniversitetet,Institutionen för biologi och miljö (BOM)
Medina-Silva, Renata (författare)
Pontificia Univ Catolica Rio Grande do Sul PUCRS, Brazil
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 (creator_code:org_t)
Elsevier, 2020
2020
Engelska.
Ingår i: Heliyon. - : Elsevier. - 2405-8440. ; 6:8, s. 1-16
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • In November 2015, two iron ore tailing dams collapsed in the city of Mariana, Brazil. The dams' collapse generated a wave of approximately 50 million m(3) of a mixture of mining waste and water. It was a major environmental tragedy in Brazilian history, which damaged rivers, and cities 660 km away in the Doce River basin until it reached the ocean coast. Shortly after the incident, several reports informed that the concentration of metals in the water was above acceptable legal limits under Brazilian laws. Here the microbial communities in samples of water, mud, foam, and rhizosphere of Eichhornia from Doce River were analyzed for 16S and 18S rRNA-based amplicon sequencing, along with microbial isolation, chemical and mineralogical analyses. Samples were collected one month and thirteen months after the collapse. Prokaryotic communities from mud shifted drastically over time (33% Bray-Curtis similarity), while water samples were more similar (63% Bray-Curtis similarity) in the same period. After 12 months, mud samples remained with high levels of heavy metals and a reduction in the diversity of microeukaryotes was detected. Amoebozoans increased in mud samples, reaching 49% of microeukaryote abundance, with Discosea and Lobosa groups being the most abundant. The microbial communities' structure in mud samples changed adapting to the new environment condition. The characterization of microbial communities and metal-tolerant organisms from such impacted environments is essential for understanding the ecological consequences of massive anthropogenic impacts and strategies for the restoration of contaminated sites such as the Doce River.

Ämnesord

NATURAL SCIENCES  -- Biological Sciences -- Microbiology (hsv//eng)
NATURVETENSKAP  -- Biologiska vetenskaper -- Mikrobiologi (hsv//swe)
NATURVETENSKAP  -- Biologi (hsv//swe)
NATURAL SCIENCES  -- Biological Sciences (hsv//eng)

Nyckelord

Aquatic ecology
Ecosystem change
Microbial ecology
Water pollution
Bacteria
Protozoa
Microbial genomics
Ore mining
Environmental impact
Metal tolerance
High throughput DNA sequencing
Mikrobiologi
Microbiology

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