globalchange  > 气候变化事实与影响
DOI: 10.1016/j.watres.2018.12.028
Scopus记录号: 2-s2.0-85059485212
论文题名:
Desiccation events change the microbial response to gradients of wastewater effluent pollution
作者: Romero F.; Sabater S.; Font C.; Balcázar J.L.; Acuña V.
刊名: Water Research
ISSN: 431354
出版年: 2019
起始页码: 371
结束页码: 380
语种: 英语
英文关键词: Bacterial community ; Biological information matrix ; BIOM ; D ; Desiccation ; Desiccation ; Dissolved organic carbon ; DOC ; Mesocosms ; Multiple stressors ; Operational taxonomic unit ; OTU ; PCR ; PERMANOVA ; Permutational multivariate analysis of variance ; Polymerase chain reaction ; Residual standard error ; RSE ; S ; Sediment type ; Threshold indicator taxa analysis ; TITAN ; Wastewater treatment plant ; Wastewater treatment plant effluent ; Wastewater treatment plant effluent ; We ; WWTP
Scopus关键词: Biological water treatment ; Deuterium ; Driers (materials) ; Effluent treatment ; Microorganisms ; Multivariant analysis ; Organic carbon ; Pollution control ; Polymerase chain reaction ; Reclamation ; River pollution ; Rivers ; RNA ; Sewage pumping plants ; Stream flow ; Wastewater treatment ; Water treatment plants ; Bacterial community ; Biological information ; BIOM ; Desiccation ; Dissolved organic carbon ; Indicator taxon ; Mesocosms ; Multiple stressors ; Multivariate analysis of variances ; Operational taxonomic units ; PERMANOVA ; Standard errors ; TITAN ; Wastewater treatment plant effluent ; Wastewater treatment plants ; WWTP ; Effluents ; RNA 16S ; biotechnology ; community response ; community structure ; cyanobacterium ; desiccation ; dissolved organic carbon ; effluent ; error analysis ; genetic analysis ; microbial activity ; microbial community ; polymerase chain reaction ; sedimentary structure ; stream channel ; threshold ; variance analysis ; wastewater ; wastewater treatment plant ; Actinobacteria ; amplicon ; analytic method ; Article ; community structure ; cyanobacterium ; desiccation ; effluent ; gene sequence ; high throughput sequencing ; microbial community ; nonhuman ; polymerase chain reaction ; priority journal ; Proteobacteria ; quantitative analysis ; river ; threshold indicator taxa analysis ; waste water ; waste water management ; waste water treatment plant ; water flow ; water pollution ; Actinobacteria ; Bacteria (microorganisms) ; Cyanobacteria ; Proteobacteria
英文摘要: While wastewater treatment plant (WWTP) effluents have become increasingly recognized as a stressor for receiving rivers, their effects on river microbial communities remain elusive. Moreover, global change is increasing the frequency and duration of desiccation events in river networks, and we ignore how desiccation might influence the response of microbial communities to WWTP effluents. In this study, we evaluated the interaction between desiccation events and WWTP effluents under different dilution capacities. Specifically, we used artificial streams in a replicated regressional design, exposing first a section of the streams to a 7-day desiccation period and then the full stream to different levels of a realistic WWTP effluent dilution, from 0% to 100% of WWTP effluent proportion of the total stream flow. The microbial community response was assessed by means of high-throughput sequencing of 16S rRNA gene amplicons and quantitative PCR targeting ecologically-relevant microbial groups. Threshold Indicator Taxa Analysis (TITAN) was used, together with model fitting, to determine community thresholds and potential indicator taxa. Results show significant interactions between WWTP effluents and desiccation, particularly when sediment type is considered. Indicator taxa included members of Proteobacteria, Actinobacteria and Cyanobacteria, with abrupt changes in community structure at WWTP effluent proportion of the total flow above 50%, which is related to nutrient levels ranging 4.6–5.2 mg N−NO 3 − L −1 , 0.21–0.32 mg P−PO 4 3− L −1 and 7.09–9.00 mg DOC L −1 . Our work indicates that situations where WWTP effluents account for >50% of the total river flow might risk of dramatic microbial community structure changes and should be avoided. © 2018 Elsevier Ltd
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122039
Appears in Collections:气候变化事实与影响

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作者单位: ICRA, Catalan Institute for Water Research, University of Girona, Emili Grahit 101, Girona, 17003, Spain; Institute of Aquatic Ecology, University of Girona, Campus de Montilivi, Girona, 17071, Spain

Recommended Citation:
Romero F.,Sabater S.,Font C.,et al. Desiccation events change the microbial response to gradients of wastewater effluent pollution[J]. Water Research,2019-01-01
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