Insignificant Response of Bacterioplankton Community to Elevated pCO2 During a Short-Term Microcosm Experiment in a Subtropical Eutrophic Coastal Ecosystem

Ocean acidification, as one of the major consequences of global climate change, markedly affects multiple ecosystem functions in disparate marine environments from coastal habitats to the deep ocean. Evaluation of the responses of marine microbial community to the increasing partial pressure of CO2...

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Autores principales:	Yunlan Yang, Fei Zhang, Xiaowei Chen, Huifang Li, Nianzhi Jiao, Rui Zhang
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	elevated pCO2 bacterioplankton community abundance community composition eutrophic coastal ecosystem Microbiology QR1-502
Acceso en línea:	https://doaj.org/article/473094f374f44d61a25b32bdb2092fa8
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spelling	oai:doaj.org-article:473094f374f44d61a25b32bdb2092fa82021-11-12T06:15:39ZInsignificant Response of Bacterioplankton Community to Elevated pCO2 During a Short-Term Microcosm Experiment in a Subtropical Eutrophic Coastal Ecosystem1664-302X10.3389/fmicb.2021.730377https://doaj.org/article/473094f374f44d61a25b32bdb2092fa82021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fmicb.2021.730377/fullhttps://doaj.org/toc/1664-302XOcean acidification, as one of the major consequences of global climate change, markedly affects multiple ecosystem functions in disparate marine environments from coastal habitats to the deep ocean. Evaluation of the responses of marine microbial community to the increasing partial pressure of CO2 (pCO2) is crucial to explore the microbe-driven biogeochemical processes in the future ocean. In this study, a microcosm incubation of eutrophic coastal water from Xiamen Bay under elevated pCO2 (about 1,000 μatm) and control (ambient air, about 380–410 μatm) conditions was conducted to investigate the effect of ocean acidification on the natural bacterioplankton community. During the 5-day incubation period, the chlorophyll a concentration and bacterioplankton abundance were not significantly affected by increased pCO2. Hierarchical clustering and non-metric multidimensional scaling analysis based on Bray-Curtis similarity among the bacterioplankton community derived from the 16S rRNA genes revealed an inconspicuous impact of elevated pCO2 on the bacterial community. During the incubation period, Proteobacteria, Bacteroidetes, Actinobacteria, Cyanobacteria, and Epsilonbacteraeota were predominant in all microcosms. Despite the distinct temporal variation in the composition of the bacterioplankton community during the experimental period, statistical analyses showed that no significant difference was found on bacterioplankton taxa between elevated pCO2 and control, indicating that the bacterioplankton at the population-level were also insensitive to elevated pCO2. Our results therefore suggest that the bacterioplankton communities in the fluctuating and eutrophic coastal ecosystems appear to be adaptable to the short-term elevated pCO2.Yunlan YangYunlan YangFei ZhangFei ZhangXiaowei ChenXiaowei ChenHuifang LiHuifang LiNianzhi JiaoNianzhi JiaoRui ZhangRui ZhangFrontiers Media S.A.articleelevated pCO2bacterioplankton communityabundancecommunity compositioneutrophic coastal ecosystemMicrobiologyQR1-502ENFrontiers in Microbiology, Vol 12 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	elevated pCO2 bacterioplankton community abundance community composition eutrophic coastal ecosystem Microbiology QR1-502
spellingShingle	elevated pCO2 bacterioplankton community abundance community composition eutrophic coastal ecosystem Microbiology QR1-502 Yunlan Yang Yunlan Yang Fei Zhang Fei Zhang Xiaowei Chen Xiaowei Chen Huifang Li Huifang Li Nianzhi Jiao Nianzhi Jiao Rui Zhang Rui Zhang Insignificant Response of Bacterioplankton Community to Elevated pCO2 During a Short-Term Microcosm Experiment in a Subtropical Eutrophic Coastal Ecosystem
description	Ocean acidification, as one of the major consequences of global climate change, markedly affects multiple ecosystem functions in disparate marine environments from coastal habitats to the deep ocean. Evaluation of the responses of marine microbial community to the increasing partial pressure of CO2 (pCO2) is crucial to explore the microbe-driven biogeochemical processes in the future ocean. In this study, a microcosm incubation of eutrophic coastal water from Xiamen Bay under elevated pCO2 (about 1,000 μatm) and control (ambient air, about 380–410 μatm) conditions was conducted to investigate the effect of ocean acidification on the natural bacterioplankton community. During the 5-day incubation period, the chlorophyll a concentration and bacterioplankton abundance were not significantly affected by increased pCO2. Hierarchical clustering and non-metric multidimensional scaling analysis based on Bray-Curtis similarity among the bacterioplankton community derived from the 16S rRNA genes revealed an inconspicuous impact of elevated pCO2 on the bacterial community. During the incubation period, Proteobacteria, Bacteroidetes, Actinobacteria, Cyanobacteria, and Epsilonbacteraeota were predominant in all microcosms. Despite the distinct temporal variation in the composition of the bacterioplankton community during the experimental period, statistical analyses showed that no significant difference was found on bacterioplankton taxa between elevated pCO2 and control, indicating that the bacterioplankton at the population-level were also insensitive to elevated pCO2. Our results therefore suggest that the bacterioplankton communities in the fluctuating and eutrophic coastal ecosystems appear to be adaptable to the short-term elevated pCO2.
format	article
author	Yunlan Yang Yunlan Yang Fei Zhang Fei Zhang Xiaowei Chen Xiaowei Chen Huifang Li Huifang Li Nianzhi Jiao Nianzhi Jiao Rui Zhang Rui Zhang
author_facet	Yunlan Yang Yunlan Yang Fei Zhang Fei Zhang Xiaowei Chen Xiaowei Chen Huifang Li Huifang Li Nianzhi Jiao Nianzhi Jiao Rui Zhang Rui Zhang
author_sort	Yunlan Yang
title	Insignificant Response of Bacterioplankton Community to Elevated pCO2 During a Short-Term Microcosm Experiment in a Subtropical Eutrophic Coastal Ecosystem
title_short	Insignificant Response of Bacterioplankton Community to Elevated pCO2 During a Short-Term Microcosm Experiment in a Subtropical Eutrophic Coastal Ecosystem
title_full	Insignificant Response of Bacterioplankton Community to Elevated pCO2 During a Short-Term Microcosm Experiment in a Subtropical Eutrophic Coastal Ecosystem
title_fullStr	Insignificant Response of Bacterioplankton Community to Elevated pCO2 During a Short-Term Microcosm Experiment in a Subtropical Eutrophic Coastal Ecosystem
title_full_unstemmed	Insignificant Response of Bacterioplankton Community to Elevated pCO2 During a Short-Term Microcosm Experiment in a Subtropical Eutrophic Coastal Ecosystem
title_sort	insignificant response of bacterioplankton community to elevated pco2 during a short-term microcosm experiment in a subtropical eutrophic coastal ecosystem
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/473094f374f44d61a25b32bdb2092fa8
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Insignificant Response of Bacterioplankton Community to Elevated pCO2 During a Short-Term Microcosm Experiment in a Subtropical Eutrophic Coastal Ecosystem

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