文献类型：期刊文献

英文题名：High-proportions of tailwater discharge alter microbial community composition and assembly in receiving sediments

作者：Zhou, Yaqian[1,2] Cheng, Li[3] Lian, Ying[2] Feng, Jiaying[2] Zhou, Mengling[2] Jing, Dan[2] Yin, Weiwen[2] Wang, Heli[2,4] Liu, Lei[5]

第一作者：Zhou, Yaqian

通信作者：Wang, HL[1];Wang, HL[2];Liu, L[3]

机构：[1]Beijing Inst Econ & Management, Beijing 100102, Peoples R China;[2]China Univ Geosci Beijing, Sch Water Resources & Environm, Beijing 100083, Peoples R China;[3]China Univ Geosci Beijing, Beijing 100083, Peoples R China;[4]Suzhou Univ Sci & Technol, Jiangsu Collaborat Innovat Ctr Technol & Mat Wate, Suzhou 215009, Peoples R China;[5]Chinese Acad Forestry, Res Inst Forestry, Key Lab Tree Breeding & Cultivat Natl Forestry &, Beijing 100091, Peoples R China

年份：2024

卷号：14

期号：1

外文期刊名：SCIENTIFIC REPORTS

收录：;Scopus(收录号：2-s2.0-85196403979);WOS:【SCI-EXPANDED(收录号:WOS:001281772600069)】；

基金：This work was supported by Aerospace Kaitian Environmental Technology Co., Ltd Support Program (No. YF-2021-002, 21K992). We thank Editage language editing services for their linguistic assistance during the preparation of this manuscript.

语种：英文

外文关键词：Tailwater; Receiving water; Sediments; Community structure; Co-occurrence network; Microecology

摘要：The tailwater from wastewater treatment plants serves as an important water resource in arid regions, alleviating the conflict between supply and demand. However, the effects of different tailwater discharge proportions on microbial community dynamics remain unclear. In this study, we investigated the effects of different tailwater discharge proportions on the water quality and microbial community characteristics of sediments in receiving water bodies under controlled conditions (WF-1, WF-2, WF-3, WF-4, and WF-5, containing 0% tailwater+100% natural water, 25% tailwater+75% natural water, 50% tailwater+50% natural water, 75% tailwater+25% natural water, and 100% tailwater+0% natural water, respectively). Microbial co-occurrence networks and structural equation model were used to unveil the relationship between microbial communities and their shaping factors. Results showed that distinct microbial community compositions were found in the sediments with low- (<50%) and high- (>50%) proportions of tailwater. Specifically, WCHB1-41 and g_4-29-1, which are involved in organic degradation-related functions, were the key genera in the high-proportion cluster. A total of 21 taxa were more abundant in the low-proportion (<50%) cluster than that in high-proportion (>50%). Moreover, higher modularity was observed in the low-proportion. Total phosphorus directly affected while ammonia nitrogen indirectly affected the microbial community structure. Our findings support the distinct heterogeneity of microbial communities driven by tailwater discharge in receiving water bodies, and further confirmed that high-proportion tailwater depletes sensitive microbial communities, which may be avoided through scientific management.