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Effects of Organic Pollutants on Bacterial Communities Under Future Climate Change Scenarios

Coastal ecosystems are highly dynamic and can be strongly influenced by climate change, anthropogenic activities (e.g., pollution), and a combination of the two pressures. As a result of climate change, the northern hemisphere is predicted to undergo an increased precipitation regime, leading in tur...

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Autores principales: Rodríguez, Juanjo, Gallampois, Christine M. J., Timonen, Sari, Andersson, Agneta, Sinkko, Hanna, Haglund, Peter, Berglund, Åsa M. M., Ripszam, Matyas, Figueroa, Daniela, Tysklind, Mats, Rowe, Owen
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6284067/
https://www.ncbi.nlm.nih.gov/pubmed/30555447
http://dx.doi.org/10.3389/fmicb.2018.02926
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author Rodríguez, Juanjo
Gallampois, Christine M. J.
Timonen, Sari
Andersson, Agneta
Sinkko, Hanna
Haglund, Peter
Berglund, Åsa M. M.
Ripszam, Matyas
Figueroa, Daniela
Tysklind, Mats
Rowe, Owen
author_facet Rodríguez, Juanjo
Gallampois, Christine M. J.
Timonen, Sari
Andersson, Agneta
Sinkko, Hanna
Haglund, Peter
Berglund, Åsa M. M.
Ripszam, Matyas
Figueroa, Daniela
Tysklind, Mats
Rowe, Owen
author_sort Rodríguez, Juanjo
collection PubMed
description Coastal ecosystems are highly dynamic and can be strongly influenced by climate change, anthropogenic activities (e.g., pollution), and a combination of the two pressures. As a result of climate change, the northern hemisphere is predicted to undergo an increased precipitation regime, leading in turn to higher terrestrial runoff and increased river inflow. This increased runoff will transfer terrestrial dissolved organic matter (tDOM) and anthropogenic contaminants to coastal waters. Such changes can directly influence the resident biology, particularly at the base of the food web, and can influence the partitioning of contaminants and thus their potential impact on the food web. Bacteria have been shown to respond to high tDOM concentration and organic pollutants loads, and could represent the entry of some pollutants into coastal food webs. We carried out a mesocosm experiment to determine the effects of: (1) increased tDOM concentration, (2) organic pollutant exposure, and (3) the combined effect of these two factors, on pelagic bacterial communities. This study showed significant responses in bacterial community composition under the three environmental perturbations tested. The addition of tDOM increased bacterial activity and diversity, while the addition of organic pollutants led to an overall reduction of these parameters, particularly under concurrent elevated tDOM concentration. Furthermore, we identified 33 bacterial taxa contributing to the significant differences observed in community composition, as well as 35 bacterial taxa which responded differently to extended exposure to organic pollutants. These findings point to the potential impact of organic pollutants under future climate change conditions on the basal coastal ecosystem, as well as to the potential utility of natural bacterial communities as efficient indicators of environmental disturbance.
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spelling pubmed-62840672018-12-14 Effects of Organic Pollutants on Bacterial Communities Under Future Climate Change Scenarios Rodríguez, Juanjo Gallampois, Christine M. J. Timonen, Sari Andersson, Agneta Sinkko, Hanna Haglund, Peter Berglund, Åsa M. M. Ripszam, Matyas Figueroa, Daniela Tysklind, Mats Rowe, Owen Front Microbiol Microbiology Coastal ecosystems are highly dynamic and can be strongly influenced by climate change, anthropogenic activities (e.g., pollution), and a combination of the two pressures. As a result of climate change, the northern hemisphere is predicted to undergo an increased precipitation regime, leading in turn to higher terrestrial runoff and increased river inflow. This increased runoff will transfer terrestrial dissolved organic matter (tDOM) and anthropogenic contaminants to coastal waters. Such changes can directly influence the resident biology, particularly at the base of the food web, and can influence the partitioning of contaminants and thus their potential impact on the food web. Bacteria have been shown to respond to high tDOM concentration and organic pollutants loads, and could represent the entry of some pollutants into coastal food webs. We carried out a mesocosm experiment to determine the effects of: (1) increased tDOM concentration, (2) organic pollutant exposure, and (3) the combined effect of these two factors, on pelagic bacterial communities. This study showed significant responses in bacterial community composition under the three environmental perturbations tested. The addition of tDOM increased bacterial activity and diversity, while the addition of organic pollutants led to an overall reduction of these parameters, particularly under concurrent elevated tDOM concentration. Furthermore, we identified 33 bacterial taxa contributing to the significant differences observed in community composition, as well as 35 bacterial taxa which responded differently to extended exposure to organic pollutants. These findings point to the potential impact of organic pollutants under future climate change conditions on the basal coastal ecosystem, as well as to the potential utility of natural bacterial communities as efficient indicators of environmental disturbance. Frontiers Media S.A. 2018-11-30 /pmc/articles/PMC6284067/ /pubmed/30555447 http://dx.doi.org/10.3389/fmicb.2018.02926 Text en Copyright © 2018 Rodríguez, Gallampois, Timonen, Andersson, Sinkko, Haglund, Berglund, Ripszam, Figueroa, Tysklind and Rowe. 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) and the copyright owner(s) 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
Rodríguez, Juanjo
Gallampois, Christine M. J.
Timonen, Sari
Andersson, Agneta
Sinkko, Hanna
Haglund, Peter
Berglund, Åsa M. M.
Ripszam, Matyas
Figueroa, Daniela
Tysklind, Mats
Rowe, Owen
Effects of Organic Pollutants on Bacterial Communities Under Future Climate Change Scenarios
title Effects of Organic Pollutants on Bacterial Communities Under Future Climate Change Scenarios
title_full Effects of Organic Pollutants on Bacterial Communities Under Future Climate Change Scenarios
title_fullStr Effects of Organic Pollutants on Bacterial Communities Under Future Climate Change Scenarios
title_full_unstemmed Effects of Organic Pollutants on Bacterial Communities Under Future Climate Change Scenarios
title_short Effects of Organic Pollutants on Bacterial Communities Under Future Climate Change Scenarios
title_sort effects of organic pollutants on bacterial communities under future climate change scenarios
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6284067/
https://www.ncbi.nlm.nih.gov/pubmed/30555447
http://dx.doi.org/10.3389/fmicb.2018.02926
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