Phytoplankton community dynamics in West Lake after drawing water from the Qiantang River
OriginalPaper|Updated:2023-05-16
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Phytoplankton community dynamics in West Lake after drawing water from the Qiantang River
Phytoplankton community dynamics in West Lake after drawing water from the Qiantang River
海洋湖沼学报(英文)2004年22卷第2期 页码:176-185
Affiliations:
1. Institute of Hydrobiology the Chinese Academy of Sciences
2. Institute of Environmental Science
Author bio:
Funds:
Supported by NSFC (No. 39670155) and “Studies of phytoplankton community in the West Lake after water was drawn from the Qiantang River” by the Institute of Environmental Science, Hangzhou, China.
Phytoplankton community dynamics in West Lake after drawing water from the Qiantang River[J]. 海洋湖沼学报(英文), 2004,22(2):176-185.
Yinxin, W., Jin, L. & Zuoming, Y. Phytoplankton community dynamics in West Lake after drawing water from the Qiantang River., Chin. J. Ocean. Limnol. 22, 176–185 (2004). https://doi.org/10.1007/BF02842590
Phytoplankton community dynamics in West Lake after drawing water from the Qiantang River[J]. 海洋湖沼学报(英文), 2004,22(2):176-185. DOI: 10.1007/BF02842590.
Yinxin, W., Jin, L. & Zuoming, Y. Phytoplankton community dynamics in West Lake after drawing water from the Qiantang River., Chin. J. Ocean. Limnol. 22, 176–185 (2004). https://doi.org/10.1007/BF02842590DOI:
Phytoplankton community dynamics in West Lake after drawing water from the Qiantang River
摘要
Abstract
Seventeen phytoplankton dominant species of 218 taxa were found to have contributed to more than 80% of the biomass after analysis of the January
1955 to December
1996 phytoplankton population at five stations in West Lake after Qiantang River water had been drawn into the lake for a decade. The seasonal fluctuations were obvious; the maximum cell density of 90.91×107–93.58.×107 cells/L and biomass of 57.41–58.61 mg/L occurred mainly in summer of 1996
largely as a result of the development ofLyngbya contorta
Merismopedia tenuissima
Oscillatoria limnetica
Spirulina laxissima and Scenedesmus quadricauda
etc. at Stations 2 and 4. At Station 1 located near the inlet for drawing water from the Qiantang River
the species number
cell density
biomass
chlorophyll a concentration and physico-chemical parameters (except for total nitrogen) were obviously greater than those at the other four stations
also greater than the corresponding parameters before the drawing of water from the Qiantang River into the lake. Compared with the results of study on the phytoplankton community in 1980 before the drawing of Qiantang River into the lake
the species number and the total individual density were increased
the dominant species changed some-what
the biomass was decreased. The water quality was improved (especially at Station 1) after the drawing of river water into the lake. Based on criteria for evaluating trophic status
the biological and chemical indicators such as species composition and dominant species
and other parameters such as annual mean value cell densities (36.06×107–51.27×107 cells/L)
biomass (29.03–39.74 mg/L)
chl a concentrations (41.29–67.67μg/L)
total nitrigen (1.72–2.89 mg/L)
total phosphorus (0.12–0.16 mg/L) obtained at Stations 2
3
4 and 5
showed that West Lake is still at eutrophic lake.
关键词
Keywords
references
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