Microbial community composition and cooccurrence patterns driven by co-contamination of arsenic and antimony in antimony-mining area

作者：Pan, Wei-song; Zou, Qi^*; Hu, Min; Li, Wai-chin; Xiong, Xiao-ran; Qi, Yan-ting; Wu, Chuan^*

来源：Journal of Hazardous Materials, 2023, 454: 131535.

DOI：10.1016/j.jhazmat.2023.131535

• Antimony
• Arsenic
• Microbial composition
• Cooccurrence network
• Community assembly

In the current study, a typical Sb mine was selected to explore the microbial community composition and assembly driven by the cocontamination of As/Sb with geographic distance. Our results showed that environmental parameters, especially pH, TOC, nitrate, total and bioavailable As/Sb contents largely affected the microbial community diversity and composition. The total and bioavailable As/Sb levels were significantly positively correlated with the relative abundance of Zavarzinella, Thermosporothrix and Holophaga, while the pH presented a significant negative correlation with the three genera, potentially implying they are important taxonomic groups in acid-mining soils. The cooccurrence network analysis indicated the environmental stress dominated by pH and As/Sb co-contamination affected the microbial modularity and interaction. Meanwhile, Homogeneous selection (HoS, 26.4-49.3%), and drift and others (DR, 27.1 similar to 40.2%) were the most important

• 单位
  环境保护部华南环境科学研究所; 湖南农业大学