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Quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches
To understand how ocean acidification (OA) influences sediment microbial communities, naturally CO(2)-rich sites are increasingly being used as OA analogues. However, the characterization of these naturally CO(2)-rich sites is often limited to OA-related variables, neglecting additional environmenta...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Oxford University Press
2016
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4828923/ https://www.ncbi.nlm.nih.gov/pubmed/26887661 http://dx.doi.org/10.1093/femsec/fiw027 |
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author | Hassenrück, Christiane Fink, Artur Lichtschlag, Anna Tegetmeyer, Halina E. de Beer, Dirk Ramette, Alban |
author_facet | Hassenrück, Christiane Fink, Artur Lichtschlag, Anna Tegetmeyer, Halina E. de Beer, Dirk Ramette, Alban |
author_sort | Hassenrück, Christiane |
collection | PubMed |
description | To understand how ocean acidification (OA) influences sediment microbial communities, naturally CO(2)-rich sites are increasingly being used as OA analogues. However, the characterization of these naturally CO(2)-rich sites is often limited to OA-related variables, neglecting additional environmental variables that may confound OA effects. Here, we used an extensive array of sediment and bottom water parameters to evaluate pH effects on sediment microbial communities at hydrothermal CO(2) seeps in Papua New Guinea. The geochemical composition of the sediment pore water showed variations in the hydrothermal signature at seep sites with comparable pH, allowing the identification of sites that may better represent future OA scenarios. At these sites, we detected a 60% shift in the microbial community composition compared with reference sites, mostly related to increases in Chloroflexi sequences. pH was among the factors significantly, yet not mainly, explaining changes in microbial community composition. pH variation may therefore often not be the primary cause of microbial changes when sampling is done along complex environmental gradients. Thus, we recommend an ecosystem approach when assessing OA effects on sediment microbial communities under natural conditions. This will enable a more reliable quantification of OA effects via a reduction of potential confounding effects. |
format | Online Article Text |
id | pubmed-4828923 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2016 |
publisher | Oxford University Press |
record_format | MEDLINE/PubMed |
spelling | pubmed-48289232016-04-13 Quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches Hassenrück, Christiane Fink, Artur Lichtschlag, Anna Tegetmeyer, Halina E. de Beer, Dirk Ramette, Alban FEMS Microbiol Ecol Research Article To understand how ocean acidification (OA) influences sediment microbial communities, naturally CO(2)-rich sites are increasingly being used as OA analogues. However, the characterization of these naturally CO(2)-rich sites is often limited to OA-related variables, neglecting additional environmental variables that may confound OA effects. Here, we used an extensive array of sediment and bottom water parameters to evaluate pH effects on sediment microbial communities at hydrothermal CO(2) seeps in Papua New Guinea. The geochemical composition of the sediment pore water showed variations in the hydrothermal signature at seep sites with comparable pH, allowing the identification of sites that may better represent future OA scenarios. At these sites, we detected a 60% shift in the microbial community composition compared with reference sites, mostly related to increases in Chloroflexi sequences. pH was among the factors significantly, yet not mainly, explaining changes in microbial community composition. pH variation may therefore often not be the primary cause of microbial changes when sampling is done along complex environmental gradients. Thus, we recommend an ecosystem approach when assessing OA effects on sediment microbial communities under natural conditions. This will enable a more reliable quantification of OA effects via a reduction of potential confounding effects. Oxford University Press 2016-02-16 2016-05-01 /pmc/articles/PMC4828923/ /pubmed/26887661 http://dx.doi.org/10.1093/femsec/fiw027 Text en © FEMS 2016. http://creativecommons.org/licenses/by-nc/4.0/ This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com |
spellingShingle | Research Article Hassenrück, Christiane Fink, Artur Lichtschlag, Anna Tegetmeyer, Halina E. de Beer, Dirk Ramette, Alban Quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches |
title | Quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches |
title_full | Quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches |
title_fullStr | Quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches |
title_full_unstemmed | Quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches |
title_short | Quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches |
title_sort | quantification of the effects of ocean acidification on sediment microbial communities in the environment: the importance of ecosystem approaches |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4828923/ https://www.ncbi.nlm.nih.gov/pubmed/26887661 http://dx.doi.org/10.1093/femsec/fiw027 |
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