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Bacterial community structure is indicative of chemical inputs in the Upper Mississippi River

Local and regional associations between bacterial communities and nutrient and chemical concentrations were assessed in the Upper Mississippi River in Minnesota to determine if community structure was associated with discrete types of chemical inputs associated with different land cover. Bacterial c...

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Autores principales: Staley, Christopher, Gould, Trevor J., Wang, Ping, Phillips, Jane, Cotner, James B., Sadowsky, Michael J.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2014
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4189419/
https://www.ncbi.nlm.nih.gov/pubmed/25339945
http://dx.doi.org/10.3389/fmicb.2014.00524
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author Staley, Christopher
Gould, Trevor J.
Wang, Ping
Phillips, Jane
Cotner, James B.
Sadowsky, Michael J.
author_facet Staley, Christopher
Gould, Trevor J.
Wang, Ping
Phillips, Jane
Cotner, James B.
Sadowsky, Michael J.
author_sort Staley, Christopher
collection PubMed
description Local and regional associations between bacterial communities and nutrient and chemical concentrations were assessed in the Upper Mississippi River in Minnesota to determine if community structure was associated with discrete types of chemical inputs associated with different land cover. Bacterial communities were characterized by Illumina sequencing of the V6 region of 16S rDNA and compared to >40 chemical and nutrient concentrations. Local bacterial community structure was shaped primarily by associations among bacterial orders. However, order abundances were correlated regionally with nutrient and chemical concentrations, and were also related to major land coverage types. Total organic carbon and total dissolved solids were among the primary abiotic factors associated with local community composition and co-varied with land cover. Escherichia coli concentration was poorly related to community composition or nutrient concentrations. Abundances of 14 bacterial orders were related to land coverage type, and seven showed significant differences in abundance (P ≤ 0.046) between forested or anthropogenically-impacted sites. This study identifies specific bacterial orders that were associated with chemicals and nutrients derived from specific land cover types and may be useful in assessing water quality. Results of this study reveal the need to investigate community dynamics at both the local and regional scales and to identify shifts in taxonomic community structure that may be useful in determining sources of pollution in the Upper Mississippi River.
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spelling pubmed-41894192014-10-22 Bacterial community structure is indicative of chemical inputs in the Upper Mississippi River Staley, Christopher Gould, Trevor J. Wang, Ping Phillips, Jane Cotner, James B. Sadowsky, Michael J. Front Microbiol Microbiology Local and regional associations between bacterial communities and nutrient and chemical concentrations were assessed in the Upper Mississippi River in Minnesota to determine if community structure was associated with discrete types of chemical inputs associated with different land cover. Bacterial communities were characterized by Illumina sequencing of the V6 region of 16S rDNA and compared to >40 chemical and nutrient concentrations. Local bacterial community structure was shaped primarily by associations among bacterial orders. However, order abundances were correlated regionally with nutrient and chemical concentrations, and were also related to major land coverage types. Total organic carbon and total dissolved solids were among the primary abiotic factors associated with local community composition and co-varied with land cover. Escherichia coli concentration was poorly related to community composition or nutrient concentrations. Abundances of 14 bacterial orders were related to land coverage type, and seven showed significant differences in abundance (P ≤ 0.046) between forested or anthropogenically-impacted sites. This study identifies specific bacterial orders that were associated with chemicals and nutrients derived from specific land cover types and may be useful in assessing water quality. Results of this study reveal the need to investigate community dynamics at both the local and regional scales and to identify shifts in taxonomic community structure that may be useful in determining sources of pollution in the Upper Mississippi River. Frontiers Media S.A. 2014-10-08 /pmc/articles/PMC4189419/ /pubmed/25339945 http://dx.doi.org/10.3389/fmicb.2014.00524 Text en Copyright © 2014 Staley, Gould, Wang, Phillips, Cotner and Sadowsky. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
spellingShingle Microbiology
Staley, Christopher
Gould, Trevor J.
Wang, Ping
Phillips, Jane
Cotner, James B.
Sadowsky, Michael J.
Bacterial community structure is indicative of chemical inputs in the Upper Mississippi River
title Bacterial community structure is indicative of chemical inputs in the Upper Mississippi River
title_full Bacterial community structure is indicative of chemical inputs in the Upper Mississippi River
title_fullStr Bacterial community structure is indicative of chemical inputs in the Upper Mississippi River
title_full_unstemmed Bacterial community structure is indicative of chemical inputs in the Upper Mississippi River
title_short Bacterial community structure is indicative of chemical inputs in the Upper Mississippi River
title_sort bacterial community structure is indicative of chemical inputs in the upper mississippi river
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4189419/
https://www.ncbi.nlm.nih.gov/pubmed/25339945
http://dx.doi.org/10.3389/fmicb.2014.00524
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