Species composition, horizontal distribution and seasonal succession of phytoplankton in the Channel from Dongting Lake to the Changjiang River, China

Wei Yin-xin

doi:10.1007/BF02849651

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Species composition, horizontal distribution and seasonal succession of phytoplankton in the Channel from Dongting Lake to the Changjiang River, China

Updated：2023-05-16

- Species composition, horizontal distribution and seasonal succession of phytoplankton in the Channel from Dongting Lake to the Changjiang River, China
- Journal of Oceanology and Limnology Vol. 20, Issue 2, Pages: 142-148(2002)
- Affiliations：
  
  Institute of Hydrobiology the Chinese Academy of Sciences
- Author bio：
- Funds：
- DOI：10.1007/BF02849651
  CLC：
- Published：2002
- Accepted：
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Yin-xin, W. Species composition, horizontal distribution and seasonal succession of phytoplankton in the Channel from Dongting Lake to the Changjiang River, China., Chin. J. Ocean. Limnol. 20, 142–148 (2002). https://doi.org/10.1007/BF02849651
DOI：

Yin-xin, W. Species composition, horizontal distribution and seasonal succession of phytoplankton in the Channel from Dongting Lake to the Changjiang River, China., Chin. J. Ocean. Limnol. 20, 142–148 (2002). https://doi.org/10.1007/BF02849651 DOI：

摘要

Abstract

The species composition

horizontal distribution and seasonal succession of the phytoplankton at five sampling stations in the channel between Dongting Lake and the Changjiang River

China were studied from May 1995 to December 1997. A total of 416 taxa were observed; diatoms comprised the most diverse taxonomic group representing 58.2% of the total species. The β-mesotrophic indicators were 92 taxa or 22% of the total

the α-mesotrophic or α

β-eutrophic indicators decreased distinctly to 20 taxa or 4.8% of the total. The species number and composition of various phyla were approximately similar at Stations 1

3 and 4

but at Station 5 the number of species was the minimum and the ratio of diatoms to total phytoplankton in the number of species was the highest. In seasonal succession of the phytoplankton species

the number was the highest in May and June

lower in December

January

March and July in the channel. The dominant species were different in different months. The ratio of diatoms species number to blue green algae and green algae species number diminished gradually from winter to summer and autumn

and then increased gradually from autumn to winter and early spring in the annual cycle. Margalef

Simpson and Shannon—Weaver diversity indices changed in different months

their values were higher in winter

lower in summer. Nygaard's diatoms quotients were lower in winter

then in spring and autumn

higher in summer. These results indicated that the water quality was the best in winter

better in spring and autumn than in summer. The relationship between the structure of the phytoplankton community and the water environmental quality was discussed.

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references

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