Study of phytoplankton community in the channel from Dongting Lake to Changjiang River, China

Wei Yinxin

doi:10.1007/BF02842818

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Study of phytoplankton community in the channel from Dongting Lake to Changjiang River, China

OriginalPaper | Updated：2023-05-16

- Study of phytoplankton community in the channel from Dongting Lake to Changjiang River, China
- Study of phytoplankton community in the channel from Dongting Lake to Changjiang River, China
- 海洋湖沼学报（英文） 2006年24卷第2期页码：178-185
- Affiliations：
  
  Institute of Hydrobiology the Chinese Academy of Sciences
- Author bio：
- Funds：
  
  Project 39670155 and 39430101 supported by NSFC.
- DOI：10.1007/BF02842818
  中图分类号：
- 网络首发：2013-01-31，
  
  纸质出版：2006
- Accepted：
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Study of phytoplankton community in the channel from Dongting Lake to Changjiang River, China[J]. 海洋湖沼学报（英文）, 2006,24(2):178-185.

Yinxin, W. Study of phytoplankton community in the channel from Dongting Lake to Changjiang River, China., Chin. J. Ocean. Limnol. 24, 178–185 (2006). https://doi.org/10.1007/BF02842818
Study of phytoplankton community in the channel from Dongting Lake to Changjiang River, China[J]. 海洋湖沼学报（英文）, 2006,24(2):178-185. DOI： 10.1007/BF02842818.

Yinxin, W. Study of phytoplankton community in the channel from Dongting Lake to Changjiang River, China., Chin. J. Ocean. Limnol. 24, 178–185 (2006). https://doi.org/10.1007/BF02842818 DOI：

摘要

Abstract

Phytoplankton cell density

biomass

chl-a concentration and their seasonal fluctuations at five stations in the channel between Dongting Lake and the Changjiang (Yangtze) River were studied from May 1995 to December 1997. The seasonal fluctuations had two peaks in a year in general. The annual patterns of total cell density and biomass indicated that diatoms contributed more than 70 percent of the total biomass (except from June to October) during the investigation period. Twenty-one dominant species contributed about 60–80 percent of the biomass in various months. The cell density

biomass and seasonal fluctuation were similar at Stations 1–4

but at Station 5 connected directly with the Changjiang River

the annual mean values (127.34×104 cells/L and 0.46 mg/L in 1996

41.98×104 cells/L and 0.2 mg/L in 1997 respectively) were lower than those (195.92×104 cells/L and 0.5 mg/L in 1996

132.96×104 cells/L and 0.57 mg/L in 1997 respectively) at Station 1–4; and the curve of the seasonal fluctuation sometimes did not coincide with those at Stations 1–4. Based on criteria for evaluating trophic status

the dominant species

annual average cell density values of 114.86×104–179.57×104 cells/L

biomass of 0.48–0.5 mg/L

chl-a concentration of 0.42–0.51 μg/L respectively recorded at five stations in 1996 and 1997

and values associated with the physico-chemical properties of the waterbody indicated that the water in the channel could be characterized as oligo-mesotrophic.

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references

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