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PAH mineralization and bacterial organotolerance in surface sediments of the Charleston Harbor estuary

Semi-volatile organic compounds (SVOCs) in estuarine waters can adversely affect biota but watershed sources can be difficult to identify because these compounds are transient. Natural bacterial assemblages may respond to chronic, episodic exposure to SVOCs through selection of more organotolerant b...

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Autores principales: Montgomery, Michael T., Boyd, Thomas J., Osburn, Christopher L., Smith, David C.
Formato: Texto
Lenguaje:English
Publicado: Springer Netherlands 2009
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2829130/
https://www.ncbi.nlm.nih.gov/pubmed/19760111
http://dx.doi.org/10.1007/s10532-009-9298-3
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author Montgomery, Michael T.
Boyd, Thomas J.
Osburn, Christopher L.
Smith, David C.
author_facet Montgomery, Michael T.
Boyd, Thomas J.
Osburn, Christopher L.
Smith, David C.
author_sort Montgomery, Michael T.
collection PubMed
description Semi-volatile organic compounds (SVOCs) in estuarine waters can adversely affect biota but watershed sources can be difficult to identify because these compounds are transient. Natural bacterial assemblages may respond to chronic, episodic exposure to SVOCs through selection of more organotolerant bacterial communities. We measured bacterial production, organotolerance and polycyclic aromatic hydrocarbon (PAH) mineralization in Charleston Harbor and compared surface sediment from stations near a known, permitted SVOC outfall (pulp mill effluent) to that from more pristine stations. Naphthalene additions inhibited an average of 77% of bacterial metabolism in sediments from the more pristine site (Wando River). Production in sediments nearest the outfall was only inhibited an average of 9% and in some cases, was actually stimulated. In general, the stations with the highest rates of bacterial production also were among those with the highest rates of PAH mineralization. This suggests that the capacity to mineralize PAH carbon is a common feature amongst the bacterial assemblage in these estuarine sediments and could account for an average of 5.6% of bacterial carbon demand (in terms of production) in the summer, 3.3% in the spring (April) and only 1.2% in winter (December).
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spelling pubmed-28291302010-03-05 PAH mineralization and bacterial organotolerance in surface sediments of the Charleston Harbor estuary Montgomery, Michael T. Boyd, Thomas J. Osburn, Christopher L. Smith, David C. Biodegradation Original Paper Semi-volatile organic compounds (SVOCs) in estuarine waters can adversely affect biota but watershed sources can be difficult to identify because these compounds are transient. Natural bacterial assemblages may respond to chronic, episodic exposure to SVOCs through selection of more organotolerant bacterial communities. We measured bacterial production, organotolerance and polycyclic aromatic hydrocarbon (PAH) mineralization in Charleston Harbor and compared surface sediment from stations near a known, permitted SVOC outfall (pulp mill effluent) to that from more pristine stations. Naphthalene additions inhibited an average of 77% of bacterial metabolism in sediments from the more pristine site (Wando River). Production in sediments nearest the outfall was only inhibited an average of 9% and in some cases, was actually stimulated. In general, the stations with the highest rates of bacterial production also were among those with the highest rates of PAH mineralization. This suggests that the capacity to mineralize PAH carbon is a common feature amongst the bacterial assemblage in these estuarine sediments and could account for an average of 5.6% of bacterial carbon demand (in terms of production) in the summer, 3.3% in the spring (April) and only 1.2% in winter (December). Springer Netherlands 2009-09-17 2010 /pmc/articles/PMC2829130/ /pubmed/19760111 http://dx.doi.org/10.1007/s10532-009-9298-3 Text en © The Author(s) 2009 https://creativecommons.org/licenses/by-nc/4.0/ This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.
spellingShingle Original Paper
Montgomery, Michael T.
Boyd, Thomas J.
Osburn, Christopher L.
Smith, David C.
PAH mineralization and bacterial organotolerance in surface sediments of the Charleston Harbor estuary
title PAH mineralization and bacterial organotolerance in surface sediments of the Charleston Harbor estuary
title_full PAH mineralization and bacterial organotolerance in surface sediments of the Charleston Harbor estuary
title_fullStr PAH mineralization and bacterial organotolerance in surface sediments of the Charleston Harbor estuary
title_full_unstemmed PAH mineralization and bacterial organotolerance in surface sediments of the Charleston Harbor estuary
title_short PAH mineralization and bacterial organotolerance in surface sediments of the Charleston Harbor estuary
title_sort pah mineralization and bacterial organotolerance in surface sediments of the charleston harbor estuary
topic Original Paper
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2829130/
https://www.ncbi.nlm.nih.gov/pubmed/19760111
http://dx.doi.org/10.1007/s10532-009-9298-3
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