Positive effects of bacterial diversity on ecosystem functioning driven by complementarity effects in a bioremediation context.

Despite their importance as ecosystem drivers, our understanding of the influence of bacterial diversity on ecosystem functioning is limited. After identifying twelve bacterial strains from two petroleum-contaminated sites, we experimentally explored the impact of biodiversity on total density by ma...

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Autores principales:	Patrick A Venail, Martha J Vives
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2013
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/cb2c3a16e44742b58c5ccf1b4316560d
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spelling	oai:doaj.org-article:cb2c3a16e44742b58c5ccf1b4316560d2021-11-18T08:57:02ZPositive effects of bacterial diversity on ecosystem functioning driven by complementarity effects in a bioremediation context.1932-620310.1371/journal.pone.0072561https://doaj.org/article/cb2c3a16e44742b58c5ccf1b4316560d2013-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/24023751/?tool=EBIhttps://doaj.org/toc/1932-6203Despite their importance as ecosystem drivers, our understanding of the influence of bacterial diversity on ecosystem functioning is limited. After identifying twelve bacterial strains from two petroleum-contaminated sites, we experimentally explored the impact of biodiversity on total density by manipulating the number of strains in culture. Irrespective of the origin of the bacteria relative to the contaminant, biodiversity positively influenced total density. However, bacteria cultured in the crude oil of their origin (autochthonous) reached higher densities than bacteria from another origin (allochthonous) and the relationship between diversity and density was stronger for autochthonous bacteria. By measuring the relative contribution of each strain to total density we showed that the observed positive effect of increasing diversity on total density was mainly due to positive interactions among species and not the presence of a particular species. Our findings can be explained by the complex chemical composition of crude oil and the necessity of a diverse array of organisms with complementary enzymatic capacities to achieve its degradation. The long term exposure to a contaminant may have allowed different bacteria to become adapted to the use of different fractions of the crude, resulting in higher complementarity in resource use in autochthonous bacteria compared to allochthonous ones. Our results could help improve the success of bioaugmentation as a bioremediation technique by suggesting the use of a diversified set of autochthonous organisms.Patrick A VenailMartha J VivesPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 8, Iss 9, p e72561 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Patrick A Venail Martha J Vives Positive effects of bacterial diversity on ecosystem functioning driven by complementarity effects in a bioremediation context.
description	Despite their importance as ecosystem drivers, our understanding of the influence of bacterial diversity on ecosystem functioning is limited. After identifying twelve bacterial strains from two petroleum-contaminated sites, we experimentally explored the impact of biodiversity on total density by manipulating the number of strains in culture. Irrespective of the origin of the bacteria relative to the contaminant, biodiversity positively influenced total density. However, bacteria cultured in the crude oil of their origin (autochthonous) reached higher densities than bacteria from another origin (allochthonous) and the relationship between diversity and density was stronger for autochthonous bacteria. By measuring the relative contribution of each strain to total density we showed that the observed positive effect of increasing diversity on total density was mainly due to positive interactions among species and not the presence of a particular species. Our findings can be explained by the complex chemical composition of crude oil and the necessity of a diverse array of organisms with complementary enzymatic capacities to achieve its degradation. The long term exposure to a contaminant may have allowed different bacteria to become adapted to the use of different fractions of the crude, resulting in higher complementarity in resource use in autochthonous bacteria compared to allochthonous ones. Our results could help improve the success of bioaugmentation as a bioremediation technique by suggesting the use of a diversified set of autochthonous organisms.
format	article
author	Patrick A Venail Martha J Vives
author_facet	Patrick A Venail Martha J Vives
author_sort	Patrick A Venail
title	Positive effects of bacterial diversity on ecosystem functioning driven by complementarity effects in a bioremediation context.
title_short	Positive effects of bacterial diversity on ecosystem functioning driven by complementarity effects in a bioremediation context.
title_full	Positive effects of bacterial diversity on ecosystem functioning driven by complementarity effects in a bioremediation context.
title_fullStr	Positive effects of bacterial diversity on ecosystem functioning driven by complementarity effects in a bioremediation context.
title_full_unstemmed	Positive effects of bacterial diversity on ecosystem functioning driven by complementarity effects in a bioremediation context.
title_sort	positive effects of bacterial diversity on ecosystem functioning driven by complementarity effects in a bioremediation context.
publisher	Public Library of Science (PLoS)
publishDate	2013
url	https://doaj.org/article/cb2c3a16e44742b58c5ccf1b4316560d
work_keys_str_mv	AT patrickavenail positiveeffectsofbacterialdiversityonecosystemfunctioningdrivenbycomplementarityeffectsinabioremediationcontext AT marthajvives positiveeffectsofbacterialdiversityonecosystemfunctioningdrivenbycomplementarityeffectsinabioremediationcontext
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Positive effects of bacterial diversity on ecosystem functioning driven by complementarity effects in a bioremediation context.

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