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Decrease of NH_4~+-N by bacterioplankton accelerated the removal of cyanobacterial blooms in aerated aquatic ecosystem
Yang Xi; Xie Ping; Ma Zhimei; Wang Qing; Fan Huihui; Shen Hong
2013
Source PublicationJournal of Environmental Sciences
ISSN1001-0742
Volume25Issue:11Pages:2223
Abstract

We used aerated systems to assess the influence of the bacterioplankton community on cyanobacterial blooms in algae/post-bloom of Lake Taihu, China. Bacterioplankton community diversity was evaluated by polymerase chain reaction-denaturing gradient gel electrophoresis (PCR-DGGE) fingerprinting. Chemical analysis and nitrogen dynamic changes illustrated that NH4+-N was nitrified to NO2--N and NO3--N by bacterioplankton. Finally, NH4+-N was exhausted and NO3--N was denitrified to NO2--N, while the accumulation of NO2--N indicated that bacterioplankton with completely aerobic denitrification ability were lacking in the water samples collected from Lake Taihu. We suggested that adding completely aerobic denitrification bacteria (to denitrify NO2--N to N-2) would improve the water quality. PCR-DGGE and sequencing results showed that more than 1/3 of the bacterial species were associated with the removal of nitrogen, and Acidovorax temperans was the dominant one. PCR-DGGE, variation of nitrogen, removal efficiencies of chlorophyll-a and canonical correspondence analysis indicated that the bacterioplankton significantly influenced the physiological and biochemical changes of cyanobacteria. Additionally, the unweighted pair-group method with arithmetic means revealed there was no obvious harm to the microecosystem from aeration. The present study demonstrated that bacterioplankton can play crucial roles in aerated ecosystems, which could control the impact of cyanobacterial blooms in eutrophicated fresh water systems.

KeywordGRADIENT GEL-ELECTROPHORESIS LAKE TAIHU AEROBIC DENITRIFICATION PARTIAL NITRIFICATION COMMUNITY COMPOSITION CHINA WATER EUTROPHICATION BACTERIA SHALLOW cyanobacterial blooms PCR-DGGE bacterioplankton community aerated ecosystem
DOI10.1016/S1001-0742(12)60282-4
Language英语
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/36306
Collection淡水生态学研究中心_期刊论文
Affiliation中国科学院水生生物研究所
Recommended Citation
GB/T 7714
Yang Xi,Xie Ping,Ma Zhimei,et al. Decrease of NH_4~+-N by bacterioplankton accelerated the removal of cyanobacterial blooms in aerated aquatic ecosystem[J]. Journal of Environmental Sciences,2013,25(11):2223.
APA Yang Xi,Xie Ping,Ma Zhimei,Wang Qing,Fan Huihui,&Shen Hong.(2013).Decrease of NH_4~+-N by bacterioplankton accelerated the removal of cyanobacterial blooms in aerated aquatic ecosystem.Journal of Environmental Sciences,25(11),2223.
MLA Yang Xi,et al."Decrease of NH_4~+-N by bacterioplankton accelerated the removal of cyanobacterial blooms in aerated aquatic ecosystem".Journal of Environmental Sciences 25.11(2013):2223.
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