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题名: Preliminary Report on Diel Vertical Distribution Patterns of Peridiniopsis in Xiangxi Bay of the Three Gorges Reservoir
作者: Xu Yao-Yang ; Cai Qing-Hua (qhcai@ihb.ac.cn) ; Li Dao-Feng ; Wang Lan ; Kong Ling-Hui ; Yu Wei
通讯作者: Cai Qing-Hua ; Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol and Biotechnol China, Wuhan 430072, Peoples R China
刊名: Wuhan Zhiwuxue Yanjiu
发表日期: 2008
卷: 26, 期:6, 页:608-612
收录类别: 其他
英文摘要: The dinoflagellate Peridiniopsis was one of bloom-forming species during the spring period in most bays of Three Gorges Reservoir (TGR). Account of diel vertical migrations may be of fundamental importance in understanding the ecology of dinoflagellates and explaining their dominance in bloom. The bloom-forming species Peridiniopsis with the characteristic of vegetative cells free-swimming, should exhibit active vertical movements in water column. However,there was no such information in previous literatures. In the present study, diel vertical distribution patterns of phytoplankton were examined from Feb. 26 to 27, 2007, when the bloom badly occurred in Xiangxi Bay of the TGR. The dominant species Peridiniopsis sp. 3 accounted for over 45% of total abundance. Patterns of diel vertical distribution were elucidated quantitatively using two different analysis methods. Firstly, mapping method was used to describe the time-depth distribution of phytoplankton individuals and abiotic factors. Secondly, the significant differences of vertical distribution from a state of randomness were tested with Morisita's index. For the dominant species Peridiniopsis sp. 3, chlorophyll a and total phytoplankton, the degree of aggregation showed an aggregated distribution in the water upper layer by day and was close to a random distribution in the water column by night. Correlation analysis showed that the diel distribution patterns were affected by photosynthetically available radiation (PAR, 400 -700 nm). The distribution patterns of phytoplankton and Peridiniopsis were coincident with that of PAR.
ISSN号: 1000-470X
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/18717
Appears in Collections:中科院水生所知识产出(2009年前)_期刊论文

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Xu Yao-Yang; Cai Qing-Hua (qhcai@ihb.ac.cn) ; Li Dao-Feng; Wang Lan; Kong Ling-Hui; Yu Wei.Preliminary Report on Diel Vertical Distribution Patterns of Peridiniopsis in Xiangxi Bay of the Three Gorges Reservoir,Wuhan Zhiwuxue Yanjiu,2008,26(6):608-612
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文件名: Preliminary Report on Diel Vertical Distribution Patterns of Peridiniopsis in Xiangxi Bay of the Three Gorges Reservoir.pdf
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