Predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method

The prediction of the influence of reservoir impoundment on water quality and phytoplankton community is the basis of ecological compensation or restoration. The aim of the current study was to predict the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using t...

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Autores principales:	Guoxin Xu, Zhengkui Ge, Qi Wang, Baozhu Pan, Ming Li
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	phytoplankton reservoir impoundment shoreline vegetation water quality Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/d33257a6e6344b9ab77e0f3756f1fab9
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spelling	oai:doaj.org-article:d33257a6e6344b9ab77e0f3756f1fab92021-11-06T03:50:43ZPredicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method2709-80442709-805210.2166/wqrj.2021.009https://doaj.org/article/d33257a6e6344b9ab77e0f3756f1fab92021-05-01T00:00:00Zhttp://wqrjc.iwaponline.com/content/56/2/100https://doaj.org/toc/2709-8044https://doaj.org/toc/2709-8052The prediction of the influence of reservoir impoundment on water quality and phytoplankton community is the basis of ecological compensation or restoration. The aim of the current study was to predict the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method. The Huangjinxia Reservoir under construction on the Han River was selected as the research object. The space-time substitution method indicated that the average values of the total phosphorus (TP) and ammonia (NH4+-N) increased from 0.049 and 0.279 mg L−1 to 0.139 and 1.132 mg L−1, respectively, after reservoir impoundment. The percentage of diatom biomass exceeded 95% before the reservoir impoundment. However, it was gradually decreased to 75% after the reservoir impoundment. Meanwhile, the biomass of Chlorophyta, Cryptophyta and Pyrrophyta increased significantly, accounting for 32, 20 and 13% of the total biomass, respectively, after reservoir impoundment. Cynodon dactylon (65.3%), Polygonum hydropiper (51.7%) and Aster subulatus (50.3%) were the dominant shoreline vegetation before the reservoir impoundment, whereas after the reservoir impoundment, the dominant species shifted to Alternanthera philoxeroides (62.3%), Lobelia chinensis (55.7%) and C. dactylon (53.9%). Our results suggested that the percentage of bloom-forming phytoplankton would gradually increase after the reservoir impoundment. In addition, A. philoxeroides, C. dactylon and L. chinensis would be the plants suitable for living in the shoreline of reservoirs in this area. HIGHLIGHTS A space-time substitution method is used to study effects of damming on algae.; The Huangjinxia Reservoir under construction on the Han River was studied.; Reservoir impoundment may increase the concentration of the total phosphorus and ammonia.; The biomass of Chlorophyta, Cryptophyta and Pyrrophyta increased significantly.; Alternanthera philoxeroides, Cynodon dactylon, and Lobelia chinensis were suitable for shoreline remediation.;Guoxin XuZhengkui GeQi WangBaozhu PanMing LiIWA Publishingarticlephytoplanktonreservoir impoundmentshoreline vegetationwater qualityEnvironmental technology. Sanitary engineeringTD1-1066ENWater Quality Research Journal, Vol 56, Iss 2, Pp 100-110 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	phytoplankton reservoir impoundment shoreline vegetation water quality Environmental technology. Sanitary engineering TD1-1066
spellingShingle	phytoplankton reservoir impoundment shoreline vegetation water quality Environmental technology. Sanitary engineering TD1-1066 Guoxin Xu Zhengkui Ge Qi Wang Baozhu Pan Ming Li Predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method
description	The prediction of the influence of reservoir impoundment on water quality and phytoplankton community is the basis of ecological compensation or restoration. The aim of the current study was to predict the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method. The Huangjinxia Reservoir under construction on the Han River was selected as the research object. The space-time substitution method indicated that the average values of the total phosphorus (TP) and ammonia (NH4+-N) increased from 0.049 and 0.279 mg L−1 to 0.139 and 1.132 mg L−1, respectively, after reservoir impoundment. The percentage of diatom biomass exceeded 95% before the reservoir impoundment. However, it was gradually decreased to 75% after the reservoir impoundment. Meanwhile, the biomass of Chlorophyta, Cryptophyta and Pyrrophyta increased significantly, accounting for 32, 20 and 13% of the total biomass, respectively, after reservoir impoundment. Cynodon dactylon (65.3%), Polygonum hydropiper (51.7%) and Aster subulatus (50.3%) were the dominant shoreline vegetation before the reservoir impoundment, whereas after the reservoir impoundment, the dominant species shifted to Alternanthera philoxeroides (62.3%), Lobelia chinensis (55.7%) and C. dactylon (53.9%). Our results suggested that the percentage of bloom-forming phytoplankton would gradually increase after the reservoir impoundment. In addition, A. philoxeroides, C. dactylon and L. chinensis would be the plants suitable for living in the shoreline of reservoirs in this area. HIGHLIGHTS A space-time substitution method is used to study effects of damming on algae.; The Huangjinxia Reservoir under construction on the Han River was studied.; Reservoir impoundment may increase the concentration of the total phosphorus and ammonia.; The biomass of Chlorophyta, Cryptophyta and Pyrrophyta increased significantly.; Alternanthera philoxeroides, Cynodon dactylon, and Lobelia chinensis were suitable for shoreline remediation.;
format	article
author	Guoxin Xu Zhengkui Ge Qi Wang Baozhu Pan Ming Li
author_facet	Guoxin Xu Zhengkui Ge Qi Wang Baozhu Pan Ming Li
author_sort	Guoxin Xu
title	Predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method
title_short	Predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method
title_full	Predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method
title_fullStr	Predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method
title_full_unstemmed	Predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method
title_sort	predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/d33257a6e6344b9ab77e0f3756f1fab9
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Predicting the effects of reservoir impoundment on phytoplankton and shoreline vegetation communities using the space-time substitution method

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