Phytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system

In order to explore new bioindicators of aquatic environments, phytoplankton functional groups (FGs) were applied in a subtropical estuarine river delta system (the Pearl River Delta) for 2012 and 2015. Our results showed that the water quality (physicochemical parameters) of 2015 was better than 20...

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Autores principales:	Chao Wang, Huijuan Jia, Jingxin Wei, Wanling Yang, Yuan Gao, Qianfu Liu, Dayan Ge, Naicheng Wu
Formato:	article
Lenguaje:	EN
Publicado:	Elsevier 2021
Materias:	Pearl River Delta Phytoplankton functional groups Water quality Predictive model Ecology QH540-549.5
Acceso en línea:	https://doaj.org/article/d43ccc0f421e4ab48e9f5f175938e74f
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spelling	oai:doaj.org-article:d43ccc0f421e4ab48e9f5f175938e74f2021-12-01T04:50:34ZPhytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system1470-160X10.1016/j.ecolind.2021.107651https://doaj.org/article/d43ccc0f421e4ab48e9f5f175938e74f2021-07-01T00:00:00Zhttp://www.sciencedirect.com/science/article/pii/S1470160X21003162https://doaj.org/toc/1470-160XIn order to explore new bioindicators of aquatic environments, phytoplankton functional groups (FGs) were applied in a subtropical estuarine river delta system (the Pearl River Delta) for 2012 and 2015. Our results showed that the water quality (physicochemical parameters) of 2015 was better than 2012, which was benefited from Chinese government’s implementation of water pollution control measures. However, a non-metric multidimensional scaling analysis (NMDS) based on phytoplankton FGs similarities did not show interannual differences correspondingly. This implied that the present improvements in water quality were insufficient to affect the interannual alterations of FGs. Among the 29 FGs identified, FGs P and TB were predominant in biomass, with sum proportion of 75%, while other FGs showed occasional advantages either seasonally or spatially, reflecting their randomness of exogenous inflows from water bodies such as lakes and reservoirs. The diversity of dominant FGs could be good bioindicators to spatial and seasonal variations in water quality, since it showed apparently lower in high eutrophic conditions (around Guangzhou city or dry seasons), and higher when water quality was better (the West River side or wet seasons). Therefore, we assumed that continued efforts in improving water quality would finally enhance the diversity of dominant FGs in the study area. In conclusion, the phytoplankton FGs method is suitable for identifying the spatial and seasonal characteristics of aquatic environments greatly affected by human activities, but its sensitivity to interannual water quality improvements requires further investigation.Chao WangHuijuan JiaJingxin WeiWanling YangYuan GaoQianfu LiuDayan GeNaicheng WuElsevierarticlePearl River DeltaPhytoplankton functional groupsWater qualityPredictive modelEcologyQH540-549.5ENEcological Indicators, Vol 126, Iss , Pp 107651- (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Pearl River Delta Phytoplankton functional groups Water quality Predictive model Ecology QH540-549.5
spellingShingle	Pearl River Delta Phytoplankton functional groups Water quality Predictive model Ecology QH540-549.5 Chao Wang Huijuan Jia Jingxin Wei Wanling Yang Yuan Gao Qianfu Liu Dayan Ge Naicheng Wu Phytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system
description	In order to explore new bioindicators of aquatic environments, phytoplankton functional groups (FGs) were applied in a subtropical estuarine river delta system (the Pearl River Delta) for 2012 and 2015. Our results showed that the water quality (physicochemical parameters) of 2015 was better than 2012, which was benefited from Chinese government’s implementation of water pollution control measures. However, a non-metric multidimensional scaling analysis (NMDS) based on phytoplankton FGs similarities did not show interannual differences correspondingly. This implied that the present improvements in water quality were insufficient to affect the interannual alterations of FGs. Among the 29 FGs identified, FGs P and TB were predominant in biomass, with sum proportion of 75%, while other FGs showed occasional advantages either seasonally or spatially, reflecting their randomness of exogenous inflows from water bodies such as lakes and reservoirs. The diversity of dominant FGs could be good bioindicators to spatial and seasonal variations in water quality, since it showed apparently lower in high eutrophic conditions (around Guangzhou city or dry seasons), and higher when water quality was better (the West River side or wet seasons). Therefore, we assumed that continued efforts in improving water quality would finally enhance the diversity of dominant FGs in the study area. In conclusion, the phytoplankton FGs method is suitable for identifying the spatial and seasonal characteristics of aquatic environments greatly affected by human activities, but its sensitivity to interannual water quality improvements requires further investigation.
format	article
author	Chao Wang Huijuan Jia Jingxin Wei Wanling Yang Yuan Gao Qianfu Liu Dayan Ge Naicheng Wu
author_facet	Chao Wang Huijuan Jia Jingxin Wei Wanling Yang Yuan Gao Qianfu Liu Dayan Ge Naicheng Wu
author_sort	Chao Wang
title	Phytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system
title_short	Phytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system
title_full	Phytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system
title_fullStr	Phytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system
title_full_unstemmed	Phytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system
title_sort	phytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system
publisher	Elsevier
publishDate	2021
url	https://doaj.org/article/d43ccc0f421e4ab48e9f5f175938e74f
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Phytoplankton functional groups as ecological indicators in a subtropical estuarine river delta system

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