Molecular characterization of long-term impacts of macrophytes harvest management in constructed wetlands

Zheng, Y; Dzakpasu, M; Wang, X; Zhang, L; Ngo, HH; Guo, W; Zhao, Y

Molecular characterization of long-term impacts of macrophytes harvest management in constructed wetlands

Zheng, Y Dzakpasu, M Wang, X Zhang, L Ngo, HH

Guo, W

Zhao, Y

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Publication Type:: Journal Article
Citation:: Bioresource Technology, 2018, 268 pp. 514 - 522
Issue Date:: 2018-11-01

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Field	Value	Language
dc.contributor.author	Zheng, Y	en_US
dc.contributor.author	Dzakpasu, M	en_US
dc.contributor.author	Wang, X	en_US
dc.contributor.author	Zhang, L	en_US
dc.contributor.author	Ngo, HH https://orcid.org/0000-0002-0296-2866	en_US
dc.contributor.author	Guo, W https://orcid.org/0000-0001-5542-2858	en_US
dc.contributor.author	Zhao, Y	en_US
dc.date.available	2020-11-30T18:12:50Z
dc.date.issued	2018-11-01	en_US
dc.identifier.citation	Bioresource Technology, 2018, 268 pp. 514 - 522	en_US
dc.identifier.issn	0960-8524	en_US
dc.identifier.uri	http://hdl.handle.net/10453/128004
dc.description.abstract	© 2018 Elsevier Ltd There is little understanding of constructed wetlands (CWs) microbial community patterns in response to harvest management. Therefore, long-term impacts of harvesting Phragmites australis (Cav.) Trin. ex Steudel annually in November on the activity and community structure of microorganisms critical to the treatment efficiency of CW are elucidated. Findings show exponential increases in P. australis density and biomass with continuous harvesting, up to three times over unharvested CW. High-throughput pyrosequencing analysis demonstrates that plants harvesting improves the microbial community diversity and richness significantly, and more particularly, the relative abundance of Flavobacterium, Paenisporosarcina, and Povalibacter, which are extensively associated with CW performance. Consequently, increased plants biomass resulted in enhanced plants nutrients uptake in harvested (56.5 g N/m2, 5.5 g P/m2) than unharvested CWs (17.5 g N/m2, 1.8 g P/m2), whereas improved rhizosphere microclimates significantly enhanced nutrients removals in harvested CW (TN 109.9 g/m2 vs 67.4 g/m2, TP 18.0 g/m2 vs 13.0 g/m2).	en_US
dc.relation.ispartof	Bioresource Technology	en_US
dc.relation.isbasedon	10.1016/j.biortech.2018.08.030	en_US
dc.subject.classification	Biotechnology	en_US
dc.subject.mesh	Poaceae	en_US
dc.subject.mesh	Biomass	en_US
dc.subject.mesh	Waste Disposal, Fluid	en_US
dc.subject.mesh	Wetlands	en_US
dc.subject.mesh	Rhizosphere	en_US
dc.title	Molecular characterization of long-term impacts of macrophytes harvest management in constructed wetlands	en_US
dc.type	Journal Article
utslib.citation.volume	268	en_US
utslib.for	0904 Chemical Engineering	en_US
pubs.embargo.period	Not known	en_US
pubs.organisational-group	/University of Technology Sydney
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	/University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	/University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access	*
pubs.publication-status	Published	en_US
pubs.volume	268	en_US

Abstract:

© 2018 Elsevier Ltd There is little understanding of constructed wetlands (CWs) microbial community patterns in response to harvest management. Therefore, long-term impacts of harvesting Phragmites australis (Cav.) Trin. ex Steudel annually in November on the activity and community structure of microorganisms critical to the treatment efficiency of CW are elucidated. Findings show exponential increases in P. australis density and biomass with continuous harvesting, up to three times over unharvested CW. High-throughput pyrosequencing analysis demonstrates that plants harvesting improves the microbial community diversity and richness significantly, and more particularly, the relative abundance of Flavobacterium, Paenisporosarcina, and Povalibacter, which are extensively associated with CW performance. Consequently, increased plants biomass resulted in enhanced plants nutrients uptake in harvested (56.5 g N/m2, 5.5 g P/m2) than unharvested CWs (17.5 g N/m2, 1.8 g P/m2), whereas improved rhizosphere microclimates significantly enhanced nutrients removals in harvested CW (TN 109.9 g/m2 vs 67.4 g/m2, TP 18.0 g/m2 vs 13.0 g/m2).

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http://hdl.handle.net/10453/128004