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Resource niche overlap promotes stability of bacterial community metabolism in experimental microcosms

Decomposition of organic matter is an important ecosystem process governed in part by bacteria. The process of decomposition is expected to benefit from interspecific bacterial interactions such as resource partitioning and facilitation. However, the relative importance of resource niche breadth (me...

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Autores principales: Hunting, Ellard R., Vijver, Martina G., van der Geest, Harm G., Mulder, Christian, Kraak, Michiel H. S., Breure, Anton M., Admiraal, Wim
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Frontiers Media S.A. 2015
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4338809/
https://www.ncbi.nlm.nih.gov/pubmed/25759686
http://dx.doi.org/10.3389/fmicb.2015.00105
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author Hunting, Ellard R.
Vijver, Martina G.
van der Geest, Harm G.
Mulder, Christian
Kraak, Michiel H. S.
Breure, Anton M.
Admiraal, Wim
author_facet Hunting, Ellard R.
Vijver, Martina G.
van der Geest, Harm G.
Mulder, Christian
Kraak, Michiel H. S.
Breure, Anton M.
Admiraal, Wim
author_sort Hunting, Ellard R.
collection PubMed
description Decomposition of organic matter is an important ecosystem process governed in part by bacteria. The process of decomposition is expected to benefit from interspecific bacterial interactions such as resource partitioning and facilitation. However, the relative importance of resource niche breadth (metabolic diversity) and resource niche overlap (functional redundancy) on decomposition and the temporal stability of ecosystem processes received little scientific attention. Therefore, this study aims to evaluate the effect of an increase in bacterial community resemblance on both decomposition and the stability of bacterial metabolism in aquatic sediments. To this end, we performed laboratory microcosm experiments in which we examined the influence of bacterial consortia differing in number and composition of species on bacterial activity (Electron Transport System Activity, ETSA), dissolved organic carbon production and wavelet transformed measurements of redox potential (Eh). Single substrate affinities of the individual bacterial species were determined in order to calculate the metabolic diversity of the microbial community. Results presented here indicate that bacterial activity and organic matter decomposition increase with widening of the resource niche breadth, and that metabolic stability increases with increasing overlap in bacterial resource niches, hinting that resource niche overlap can promote the stability of bacterial community metabolism.
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spelling pubmed-43388092015-03-10 Resource niche overlap promotes stability of bacterial community metabolism in experimental microcosms Hunting, Ellard R. Vijver, Martina G. van der Geest, Harm G. Mulder, Christian Kraak, Michiel H. S. Breure, Anton M. Admiraal, Wim Front Microbiol Microbiology Decomposition of organic matter is an important ecosystem process governed in part by bacteria. The process of decomposition is expected to benefit from interspecific bacterial interactions such as resource partitioning and facilitation. However, the relative importance of resource niche breadth (metabolic diversity) and resource niche overlap (functional redundancy) on decomposition and the temporal stability of ecosystem processes received little scientific attention. Therefore, this study aims to evaluate the effect of an increase in bacterial community resemblance on both decomposition and the stability of bacterial metabolism in aquatic sediments. To this end, we performed laboratory microcosm experiments in which we examined the influence of bacterial consortia differing in number and composition of species on bacterial activity (Electron Transport System Activity, ETSA), dissolved organic carbon production and wavelet transformed measurements of redox potential (Eh). Single substrate affinities of the individual bacterial species were determined in order to calculate the metabolic diversity of the microbial community. Results presented here indicate that bacterial activity and organic matter decomposition increase with widening of the resource niche breadth, and that metabolic stability increases with increasing overlap in bacterial resource niches, hinting that resource niche overlap can promote the stability of bacterial community metabolism. Frontiers Media S.A. 2015-02-24 /pmc/articles/PMC4338809/ /pubmed/25759686 http://dx.doi.org/10.3389/fmicb.2015.00105 Text en Copyright © 2015 Hunting, Vijver, van der Geest, Mulder, Kraak, Breure and Admiraal. 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
Hunting, Ellard R.
Vijver, Martina G.
van der Geest, Harm G.
Mulder, Christian
Kraak, Michiel H. S.
Breure, Anton M.
Admiraal, Wim
Resource niche overlap promotes stability of bacterial community metabolism in experimental microcosms
title Resource niche overlap promotes stability of bacterial community metabolism in experimental microcosms
title_full Resource niche overlap promotes stability of bacterial community metabolism in experimental microcosms
title_fullStr Resource niche overlap promotes stability of bacterial community metabolism in experimental microcosms
title_full_unstemmed Resource niche overlap promotes stability of bacterial community metabolism in experimental microcosms
title_short Resource niche overlap promotes stability of bacterial community metabolism in experimental microcosms
title_sort resource niche overlap promotes stability of bacterial community metabolism in experimental microcosms
topic Microbiology
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4338809/
https://www.ncbi.nlm.nih.gov/pubmed/25759686
http://dx.doi.org/10.3389/fmicb.2015.00105
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