Microbiological assessment of ecological status in the Pearl River Estuary, China

Microbial assemblages, as fundamental components of the ecosystem, are largely neglected in current ecological monitoring. In this study, we employed a microbial community-based index (microgAMBI) to assess the ecological status of the Pearl River estuary (PRE) in China. Microorganisms of different...

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Autores principales:	Fangzhou Chen, Xiu Pei Koh, Mandy Lok Yi Tang, Jianping Gan, Stanley C.K. Lau
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Microbial community Bioindicator Ecological status assessment Free-living Particle-attached Pearl River estuary Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/43b5577f25ed4a79ac7b6adfe86f9817
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spelling	oai:doaj.org-article:43b5577f25ed4a79ac7b6adfe86f98172021-12-01T04:58:55ZMicrobiological assessment of ecological status in the Pearl River Estuary, China1470-160X10.1016/j.ecolind.2021.108084https://doaj.org/article/43b5577f25ed4a79ac7b6adfe86f98172021-11-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21007494https://doaj.org/toc/1470-160XMicrobial assemblages, as fundamental components of the ecosystem, are largely neglected in current ecological monitoring. In this study, we employed a microbial community-based index (microgAMBI) to assess the ecological status of the Pearl River estuary (PRE) in China. Microorganisms of different water layers and size fractions were collected. The assessment results showed that the PRE ecological status was “poor” on average (microgAMBI = 3.82). The index values decreased from the upper estuary to offshore areas and showed positive correlations with nutrients, and fecal indicator bacteria, suggesting that the index could represent both eutrophication and fecal pollution levels. In addition, using a machine learning analysis (LEfSe), we identified hgcI clade, Ottowia, Marinobacterium, and 54 more taxa at the genus level as eutrophication or hypoxia bio-indicators, which could supplement the database of the microgAMBI to improve assessment accuracy. Further monitoring programs should consider incorporating this microbial community-based index to achieve a higher level of integrative assessment.Fangzhou ChenXiu Pei KohMandy Lok Yi TangJianping GanStanley C.K. LauElsevierarticleMicrobial communityBioindicatorEcological status assessmentFree-livingParticle-attachedPearl River estuaryEcologyQH540-549.5ENEcological Indicators, Vol 130, Iss , Pp 108084- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Microbial community Bioindicator Ecological status assessment Free-living Particle-attached Pearl River estuary Ecology QH540-549.5
spellingShingle	Microbial community Bioindicator Ecological status assessment Free-living Particle-attached Pearl River estuary Ecology QH540-549.5 Fangzhou Chen Xiu Pei Koh Mandy Lok Yi Tang Jianping Gan Stanley C.K. Lau Microbiological assessment of ecological status in the Pearl River Estuary, China
description	Microbial assemblages, as fundamental components of the ecosystem, are largely neglected in current ecological monitoring. In this study, we employed a microbial community-based index (microgAMBI) to assess the ecological status of the Pearl River estuary (PRE) in China. Microorganisms of different water layers and size fractions were collected. The assessment results showed that the PRE ecological status was “poor” on average (microgAMBI = 3.82). The index values decreased from the upper estuary to offshore areas and showed positive correlations with nutrients, and fecal indicator bacteria, suggesting that the index could represent both eutrophication and fecal pollution levels. In addition, using a machine learning analysis (LEfSe), we identified hgcI clade, Ottowia, Marinobacterium, and 54 more taxa at the genus level as eutrophication or hypoxia bio-indicators, which could supplement the database of the microgAMBI to improve assessment accuracy. Further monitoring programs should consider incorporating this microbial community-based index to achieve a higher level of integrative assessment.
format	article
author	Fangzhou Chen Xiu Pei Koh Mandy Lok Yi Tang Jianping Gan Stanley C.K. Lau
author_facet	Fangzhou Chen Xiu Pei Koh Mandy Lok Yi Tang Jianping Gan Stanley C.K. Lau
author_sort	Fangzhou Chen
title	Microbiological assessment of ecological status in the Pearl River Estuary, China
title_short	Microbiological assessment of ecological status in the Pearl River Estuary, China
title_full	Microbiological assessment of ecological status in the Pearl River Estuary, China
title_fullStr	Microbiological assessment of ecological status in the Pearl River Estuary, China
title_full_unstemmed	Microbiological assessment of ecological status in the Pearl River Estuary, China
title_sort	microbiological assessment of ecological status in the pearl river estuary, china
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/43b5577f25ed4a79ac7b6adfe86f9817
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Microbiological assessment of ecological status in the Pearl River Estuary, China

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