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Factors Influencing Bacterial Diversity and Community Composition in Municipal Drinking Waters in the Ohio River Basin, USA

The composition and metabolic activities of microbes in drinking water distribution systems can affect water quality and distribution system integrity. In order to understand regional variations in drinking water microbiology in the upper Ohio River watershed, the chemical and microbiological consti...

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Autores principales: Stanish, Lee F., Hull, Natalie M., Robertson, Charles E., Harris, J. Kirk, Stevens, Mark J., Spear, John R., Pace, Norman R.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2016
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4928833/
https://www.ncbi.nlm.nih.gov/pubmed/27362708
http://dx.doi.org/10.1371/journal.pone.0157966
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author Stanish, Lee F.
Hull, Natalie M.
Robertson, Charles E.
Harris, J. Kirk
Stevens, Mark J.
Spear, John R.
Pace, Norman R.
author_facet Stanish, Lee F.
Hull, Natalie M.
Robertson, Charles E.
Harris, J. Kirk
Stevens, Mark J.
Spear, John R.
Pace, Norman R.
author_sort Stanish, Lee F.
collection PubMed
description The composition and metabolic activities of microbes in drinking water distribution systems can affect water quality and distribution system integrity. In order to understand regional variations in drinking water microbiology in the upper Ohio River watershed, the chemical and microbiological constituents of 17 municipal distribution systems were assessed. While sporadic variations were observed, the microbial diversity was generally dominated by fewer than 10 taxa, and was driven by the amount of disinfectant residual in the water. Overall, Mycobacterium spp. (Actinobacteria), MLE1-12 (phylum Cyanobacteria), Methylobacterium spp., and sphingomonads were the dominant taxa. Shifts in community composition from Alphaproteobacteria and Betaproteobacteria to Firmicutes and Gammaproteobacteria were associated with higher residual chlorine. Alpha- and beta-diversity were higher in systems with higher chlorine loads, which may reflect changes in the ecological processes structuring the communities under different levels of oxidative stress. These results expand the assessment of microbial diversity in municipal distribution systems and demonstrate the value of considering ecological theory to understand the processes controlling microbial makeup. Such understanding may inform the management of municipal drinking water resources.
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spelling pubmed-49288332016-07-18 Factors Influencing Bacterial Diversity and Community Composition in Municipal Drinking Waters in the Ohio River Basin, USA Stanish, Lee F. Hull, Natalie M. Robertson, Charles E. Harris, J. Kirk Stevens, Mark J. Spear, John R. Pace, Norman R. PLoS One Research Article The composition and metabolic activities of microbes in drinking water distribution systems can affect water quality and distribution system integrity. In order to understand regional variations in drinking water microbiology in the upper Ohio River watershed, the chemical and microbiological constituents of 17 municipal distribution systems were assessed. While sporadic variations were observed, the microbial diversity was generally dominated by fewer than 10 taxa, and was driven by the amount of disinfectant residual in the water. Overall, Mycobacterium spp. (Actinobacteria), MLE1-12 (phylum Cyanobacteria), Methylobacterium spp., and sphingomonads were the dominant taxa. Shifts in community composition from Alphaproteobacteria and Betaproteobacteria to Firmicutes and Gammaproteobacteria were associated with higher residual chlorine. Alpha- and beta-diversity were higher in systems with higher chlorine loads, which may reflect changes in the ecological processes structuring the communities under different levels of oxidative stress. These results expand the assessment of microbial diversity in municipal distribution systems and demonstrate the value of considering ecological theory to understand the processes controlling microbial makeup. Such understanding may inform the management of municipal drinking water resources. Public Library of Science 2016-06-30 /pmc/articles/PMC4928833/ /pubmed/27362708 http://dx.doi.org/10.1371/journal.pone.0157966 Text en © 2016 Stanish et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Stanish, Lee F.
Hull, Natalie M.
Robertson, Charles E.
Harris, J. Kirk
Stevens, Mark J.
Spear, John R.
Pace, Norman R.
Factors Influencing Bacterial Diversity and Community Composition in Municipal Drinking Waters in the Ohio River Basin, USA
title Factors Influencing Bacterial Diversity and Community Composition in Municipal Drinking Waters in the Ohio River Basin, USA
title_full Factors Influencing Bacterial Diversity and Community Composition in Municipal Drinking Waters in the Ohio River Basin, USA
title_fullStr Factors Influencing Bacterial Diversity and Community Composition in Municipal Drinking Waters in the Ohio River Basin, USA
title_full_unstemmed Factors Influencing Bacterial Diversity and Community Composition in Municipal Drinking Waters in the Ohio River Basin, USA
title_short Factors Influencing Bacterial Diversity and Community Composition in Municipal Drinking Waters in the Ohio River Basin, USA
title_sort factors influencing bacterial diversity and community composition in municipal drinking waters in the ohio river basin, usa
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4928833/
https://www.ncbi.nlm.nih.gov/pubmed/27362708
http://dx.doi.org/10.1371/journal.pone.0157966
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