Diel vertical migration of <Emphasis Type="Italic">Peridiniopsis niei</Emphasis>, Liu et al., a new species of dinoflagellates in an eutrophic bay of Three-Gorge Reservoir,China |
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Authors: | Yaoyang Xu Qinghua Cai Lan Wang Linghui Kong Daofeng Li |
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Institution: | (1) State Key Laboratory of Freshwater Ecology and Biotechnology, Institute of Hydrobiology, Chinese Academy of Sciences, 430072 Wuhan, People’s Republic of China;(2) Graduate University of Chinese Academy of Sciences, 100049 Beijing, People’s Republic of China; |
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Abstract: | In spring, a typical dinoflagellate (Peridiniopsis niei Liu et al.) constitutes most of the phytoplankton biomass in most of eutrophic bay of Three-Gorge Reservoir (TGR, China).
There are few field observations on vertical migration of the members of the genus Peridiniopsis. We studied diel vertical migration of the new species (Peridiniopsis niei) at sampling stations A and B in an eutrophic bay (Xiangxi Bay) of TGR during both day and night in March 2007. The present
study suggests that vertical migration by Peridiniopsis niei is similar in nature to the migration patterns observed for other dinoflagellates. Solar irradiance incident was an important
factor regulating the ascent and descent of Peridiniopsis niei. The vertical descent of Peridiniopsis niei during nighttime was restricted when the thermocline (Temperature gradient >1°C m−1) was present in the station B. |
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