Microbial abundance and community in subsurface flow constructed wetland microcosms: role of plant presence

Environmental Science and Pollution Research International
Qian WangCongcong Zhao

Abstract

In this research, the role of plants in improving microorganism growth conditions in subsurface flow constructed wetland (CW) microcosms was determined. In particular, microbial abundance and community were investigated during summer and winter in Phragmites australis-planted CW microcosms (PA) and unplanted CW microcosms (control, CT). Results revealed that the removal efficiencies of pollutants and microbial community structure varied in winter with variable microbial abundance. During summer, PA comprised more dominant phyla (e.g., Proteobacteria, Actinobacteria, and Bacteroidetes), whereas CT contained more Cyanobacteria and photosynthetic bacteria. During winter, the abundance of Proteobacteria was >40 % in PA but dramatically decreased in CT. Moreover, Cyanobacteria and photosynthetic bacterial dominance in CT decreased. In both seasons, bacteria were more abundant in root surfaces than in sand. Plant presence positively affected microbial abundance and community. The potential removal ability of CT, in which Cyanobacteria and photosynthetic bacteria were abundant during summer, was more significantly affected by temperature reduction than that of PA with plant presence.

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Citations

Jul 18, 2018·Water Science and Technology : a Journal of the International Association on Water Pollution Research·Khush Bakht Andleeb, Imran Hashmi
Jul 10, 2016·Environmental Science and Pollution Research International·Yan LongQingwei Guo
Jan 16, 2020·Bulletin of Environmental Contamination and Toxicology·Guozhen ZhangFuping Wu
Mar 8, 2019·International Journal of Environmental Research and Public Health·Yinghai WuRui Han
Nov 11, 2016·Microbial Ecology·Olga Sánchez
Jul 28, 2019·Environmental Science and Pollution Research International·Chayanid WitthayaphiromWilai Chiemchaisri
Apr 24, 2019·International Journal of Environmental Research and Public Health·Siyuan SongShuqing An
Sep 13, 2020·Journal of Environmental Management·Xinyong ChenCunqi Liu
Mar 3, 2021·Environmental Science and Pollution Research International·Abu Reza Md Towfiqul IslamNguyen Thi Thuy Linh

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