当前位置： SCI文献检索 > JOURNAL OF ENVIRONMENTAL MANAGEMENT期刊下所有文献 > Reservoir water stratification and mixing affects microbial community structure and functional community composition in a stratified drinking reservoir.

Reservoir water stratification and mixing affects microbial community structure and functional community composition in a stratified drinking reservoir.

Abstract：

:To investigate how the aquatic bacterial community of a stratified reservoir drives the evolution of water parameters, the microbial community structure and network characteristics of bacteria in a stratified reservoir were investigated using Illumina MiSeq sequencing technology. A total of 42 phyla and 689 distinct genera were identified, which showed significant seasonal variation. Additionally, stratified variations in the bacterial community strongly reflected the vertical gradient and seasonal changes in water temperature, dissolved oxygen, and nutrition concentration. Furthermore, principal coordinate analysis indicated that most microorganisms were likely influenced by changes in water stratification conditions, exhibiting significant differences during the stratification period and mixing period based on Adonis, MRPP, and Anosim. Compared to the stratification period, 123 enhanced operational taxonomic units (OTUs; 29%) and 226 depleted OTUs (52%) were identified during the mixing period. Linear discriminant analysis effect size results showed that 15 major genera were enriched in the mixing period and 10 major genera were enriched in the stratification period. Importantly, network analysis revealed that the keystone species belonged to hgcI_clade, CL500-29, Acidibacter, Paucimonas, Flavobacterium, Prochlorothrix, Xanthomonadales, Chloroflexia, Burkholderiales, OPB56, KI89A_clade, Synechococcus, Caulobacter or were unclassified. Redundancy analysis showed that temperature, dissolved oxygen, pH, chlorophyll-α, total phosphorus, nitrate, and ammonia were important factors influencing the water bacterial community and function composition, which were consistent with the results of the Mantel test analysis. Furthermore, random forest analysis showed that temperature, dissolved oxygen, ammonia, and total dissolved phosphorous were the most important variables predicting water bacterial community and function community α- and β-diversity (P < 0.05). Overall, these results provide insight into the interactions between the microbial community and water quality evolution mechanism in Zhoucun reservoir.

journal_name

J Environ Manage

journal_title

Journal of environmental management

authors

Shilei Z,Yue S,Tinglin H,Ya C,Xiao Y,Zizhen Z,Yang L,Zaixing L,Jiansheng C,Xiao L

doi

10.1016/j.jenvman.2020.110456

subject

Has Abstract

pub_date

2020-08-01 00:00:00

pages

110456

eissn

0301-4797

issn

1095-8630

pii

S0301-4797(20)30390-X

journal_volume

267

pub_type

杂志文章

在线工具

Reservoir water stratification and mixing affects microbial community structure and functional community composition in a stratified drinking reservoir.