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DYNAMICS OF CHLOROPHYLL FLUORESCENCE AND ECO-MORPHOLOGICAL PROPERTIES OF Microcystis BLOOM IN MEILIANG BAY OF LAKE TAIHU, CHINA
Wang, Zhicong; Zuo, Ming; Wang, Yingcai; Liu, Yongding; Li, Dunhai; Liu, YD; Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, 7 S Donghu Rd, Wuhan 430072, Hubei Province, Peoples R China; wangzhiconga@163.com; lidh@ihb.ac.cn
2011
Source PublicationFRESENIUS ENVIRONMENTAL BULLETIN
ISSN1018-4619
Volume20Issue:9Pages:2295-2305
AbstractEutrophication has become a serious concern in many lakes, resulting in cyanobacterial blooms. Some variations of physiological activity and eco-morphological property in Microcystis bloom, especially in field experiment, are currently less studied. This study aimed to describe what changes of physiological activity and eco-morphological property had happened, and identify what is the key factor resulting in the decline of Microcystis bloom. The chlorophyll fluorescence, buoyancy and colony sizes of Microcystis and variation of physico-chemical data in the Meiliang Bay estuary of Lake Taihu, China, was investigated everyday from July 18, 2009 to July 29, 2009. In field investigation, F(v)/F(m) Phi(PSII) and qP can regarded as effective indicators to evaluated physiological activity and the growth state of Microcystis bloom. We found on sunny days, photoinhibition occurred 2 hours later than that on cloudy days, but photodamage indicated by unrecoverable decreasing F(v)/F(m), was observed after exposure to high light for a long time. While on cloudy days, the photoinhibition of Microcystis seemly occurred more easily and recovered quickly at weak light. Controlling experiment showed that nutrient depletion could lead to decreased buoyancy, dis-aggregated colonies and dropping photosynthesis of Microcystis. Based on these results of high light, rich DO, a negative correlation between DO and F(v)/F(m), and a lagged photoinhibition on sunny days, we inferred Mehler's reaction was a protective mechanism of photosystem for a short time, but results in photodamage when exposure is long enough. In all, we conclude the long-term illumination of high light companied with nutrient depletion caused by rapid growth of Microcystis might be the main reasons for the bloom decline.
KeywordChlorophyll Fluorescence Colony Size Floating Velocity Decline Microcystis Bloom
Department[Wang, ZC; Zuo, M; Wang, YC; Liu, YD; Li, DH] Chinese Acad Sci, Inst Hydrobiol, Wuhan 430072, Hubei Province, Peoples R China; [Wang, ZC; Zuo, M; Wang, YC] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
Subject AreaEnvironmental Sciences & Ecology
Funding OrganizationNational Basic Research and Development Plan[2008CB418002]; National Major Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Basic Research and Development Plan[2008CB418002]; National Major Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Basic Research and Development Plan[2008CB418002]; National Major Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Basic Research and Development Plan[2008CB418002]; National Major Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3]
Indexed BySCI
Language英语
WOS IDWOS:000294979300016
Funding OrganizationNational Basic Research and Development Plan[2008CB418002]; National Major Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Basic Research and Development Plan[2008CB418002]; National Major Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Basic Research and Development Plan[2008CB418002]; National Major Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3] ; National Basic Research and Development Plan[2008CB418002]; National Major Programs of Water Body Pollution Control and Remediation[2008ZX07103-004-01, 2009ZX07104-005-3]
Citation statistics
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/16343
Collection水环境工程研究中心_期刊论文
Corresponding AuthorLiu, YD; Li, DH (reprint author), Chinese Acad Sci, Inst Hydrobiol, 7 S Donghu Rd, Wuhan 430072, Hubei Province, Peoples R China; wangzhiconga@163.com; lidh@ihb.ac.cn
Recommended Citation
GB/T 7714
Wang, Zhicong,Zuo, Ming,Wang, Yingcai,et al. DYNAMICS OF CHLOROPHYLL FLUORESCENCE AND ECO-MORPHOLOGICAL PROPERTIES OF Microcystis BLOOM IN MEILIANG BAY OF LAKE TAIHU, CHINA[J]. FRESENIUS ENVIRONMENTAL BULLETIN,2011,20(9):2295-2305.
APA Wang, Zhicong.,Zuo, Ming.,Wang, Yingcai.,Liu, Yongding.,Li, Dunhai.,...&lidh@ihb.ac.cn.(2011).DYNAMICS OF CHLOROPHYLL FLUORESCENCE AND ECO-MORPHOLOGICAL PROPERTIES OF Microcystis BLOOM IN MEILIANG BAY OF LAKE TAIHU, CHINA.FRESENIUS ENVIRONMENTAL BULLETIN,20(9),2295-2305.
MLA Wang, Zhicong,et al."DYNAMICS OF CHLOROPHYLL FLUORESCENCE AND ECO-MORPHOLOGICAL PROPERTIES OF Microcystis BLOOM IN MEILIANG BAY OF LAKE TAIHU, CHINA".FRESENIUS ENVIRONMENTAL BULLETIN 20.9(2011):2295-2305.
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