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English Abstract
Journal Article
Research Support, Non-U.S. Gov't
[Ecological characteristics of phytoplankton in Shenzhen Bay].
Huan Jing Ke Xue= Huanjing Kexue 2010 January
Based on the data of surface phytoplankton investigated by Hong Kong Environmental Protection Department in Shenzhen Bay in 2006, variation characteristics of phytoplankton communities and the relationship between the phytoplankton diversity indices and environmental factors were analyzed in the present paper. Results showed that a total of 27 genera and 34 species of phytoplankton were identified. Of these, 18 were diatoms (52.94%), 10 were dinoflagellates (29.41%), 6 were from other minor groups (17.65%). The cell abundance was estimated to be from 2.13 x 10(6) to 4.15 x 10(6) cells/L, with an average of 2.92 x 10(6) cells/L. The maximum cell abundance appeared in the autumn (October), followed in spring (May). The cell abundance showed double abundance peaks annually. The cell abundance of phytoplankton decreased from the middle bay to the bay mouth. In the marine area, the diversity index of the phytoplankton ranged from 0.76 to 2.52; the evenness of phytoplankton ranged from 0.29 to 0.74; the diversity and evenness of phytoplankton community were rather low, which indicated that the relative abundances of the species diverged from evenness, phytoplankton community were not steady, and only few dominant species increased rapidly. The species richness index ranged from 0.57 to 2.17, the high eutrophic water body caused the species richness index declined. Better relationship was found between phytoplankton diversity indices and nutrient, salinity, dissolved oxygen.
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