Cyanobacterial population and harmful metabolites dynamics during a bloom in Yanghe Reservoir, North China
文献类型：期刊论文
| 作者 | Li, Zonglai ; Yu, Jianwei ; Yang, Min ; Zhang, Jing ; Burch, Michael D. ; Han, Wei |
| 刊名 | HARMFUL ALGAE
 |
| 出版日期 | 2010-06 |
| 卷号 | 9期号:5页码:481-488 |
| 关键词 | Anabaena spiroides Anatoxin-a Cyanobacterial bloom Geosmin Microcystin Microcystis |
| 中文摘要 | A significant outbreak of odorous and toxic cyanobacteria occurred in Yanghe Reservoir, North China, in the summer of 2007. The dominant species was Anabaena spiroides and it was accompanied with the occurrence of very high concentrations of the odor metabolite geosmin. The event included two cycles of growth of A. spiroides: the first one of approximately 16 days between 21 June and 8 July, with the peak density 70,000 cells mL(-1) on 2 July, and the second smaller bloom of over 50 days between 9 July and the end of August. The bloom also included a range of species of Microcystis, predominantly M. aeruginosa, as the second largest population, which varied from 5800 cells mL(-1) to 28,000 cells mL(-1) in the first cycle and from 2000 cells mL(-1) to 11,000 cells mL(-1) in the second. Geosmin reached the peak value of 7100 ng L(-1) on 3 July, which was the highest value ever reported. The average geosmin production potential for A. spiroides cells was approximately 0.1 pg cell(-1), which was also very high and 85-97% of geosmin was found within the cells and in addition the dissolved geosmin did not increase even during the cyanobacterial decay period. In addition to odor metabolites, three microcystin variants MC-LR, MC-RR, MC-YR and anatoxin-a, most of which were intracellular, were detected, with MC-RR being the dominant cyanotoxin. The highest cyanotoxin concentrations were: dissolved: MC-RR 1.56 mu g L(-1), MC-YR 0.066 mu g L(-1), MC-LR 0.544 mu g L(-1), anatoxin-a 0.106 mu g L(-1); intracellular: MC-RR 70.1 mu g L(-1), MC-YR 3.76 mu g L(-1), MC-LR 24.6 mu g L(-1), anatoxin-a 0.184 mu g L(-1), and these occurred on 2 July. The correlation between geosmin and A. spiroides was excellent (R(2) = 0.912), however the correlation between anatoxin-a concentrations and Anabaena densities and between MCs concentrations and Microcystis densities was not as strong. This study demonstrated the relatively complex requirement for monitoring cyanobacterial blooms in this lake in China, where both the range of odors and cyanotoxins can be produced in concentrations which can change rapidly over a short time along with the bloom composition. It also demonstrated that both odor compounds and cyanotoxins should be considered in terms of the potential hazard to public water supply when a bloom was dominated by Anabaena and Microcystis occurs. (C) 2010 Elsevier B.V. All rights reserved. |
| WOS记录号 | WOS:000279305900005 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/21217]  |
| 专题 | 生态环境研究中心_环境水质学国家重点实验室 |
| 推荐引用方式 GB/T 7714 | Li, Zonglai,Yu, Jianwei,Yang, Min,et al. Cyanobacterial population and harmful metabolites dynamics during a bloom in Yanghe Reservoir, North China[J]. HARMFUL ALGAE,2010,9(5):481-488. |
| APA | Li, Zonglai,Yu, Jianwei,Yang, Min,Zhang, Jing,Burch, Michael D.,&Han, Wei.(2010).Cyanobacterial population and harmful metabolites dynamics during a bloom in Yanghe Reservoir, North China.HARMFUL ALGAE,9(5),481-488. |
| MLA | Li, Zonglai,et al."Cyanobacterial population and harmful metabolites dynamics during a bloom in Yanghe Reservoir, North China".HARMFUL ALGAE 9.5(2010):481-488. |
入库方式： OAI收割
来源：生态环境研究中心
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