Dissolved oxygen disturbs nitrate transformation by modifying microbial community, co-occurrence networks, and functional genes during aerobic-anoxic transition

Dissolved oxygen disturbs nitrate transformation by modifying microbial community, co-occurrence networks, and functional genes during aerobic-anoxic transition

No consensus has been achieved among researchers on the effect of dissolved oxygen (DO) on nitrate (NO3−-N) transformation and the microbial community, especially during aerobic-anoxic transition. To supplement this knowledge, NO3−-N transformation, microbial communities, co-occurrence networks, and...

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Veröffentlicht in:The Science of the total environment 2021-10, Vol.790, p.148245-148245, Article 148245
Hauptverfasser: Liu, Xiaoyan, Hu, Sihai, Sun, Ran, Wu, Yaoguo, Qiao, Zixia, Wang, Sichang, Zhang, Zehong, Cui, Chuwen
Format: Artikel
Sprache:eng
Schlagworte:
Aerobic-anoxic transition
Co-occurrence network
Dissolved oxygen
Microbial communities
Nitrate transformation
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Zusammenfassung:No consensus has been achieved among researchers on the effect of dissolved oxygen (DO) on nitrate (NO3−-N) transformation and the microbial community, especially during aerobic-anoxic transition. To supplement this knowledge, NO3−-N transformation, microbial communities, co-occurrence networks, and functional genes were investigated during aerobic-anoxic transition via microcosm simulation. NO3−-N transformation rate in the early stage (DO ≥2 mg/L) was always significantly higher than that in the later stage (DO
ISSN:0048-9697
1879-1026
DOI:10.1016/j.scitotenv.2021.148245