Growth and competitiveness of <i>Microcystis aeruginosa</i> and <i>Chlorella vulgaris</i> at varying pH

XUE Ling-zhan; HUANG Zhong-chi; LIN Ze; HUANG Liu-ting; LIN Xue-wen; WU Mei-ying

Volume 25 Issue 2

Nov. 2011

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Article Navigation > Fujian Journal of Agricultural Sciences > 2010 > 25(2): 142-148

XUE Ling-zhan, HUANG Zhong-chi, LIN Ze, HUANG Liu-ting, LIN Xue-wen, WU Mei-ying. Growth and competitiveness of Microcystis aeruginosa and Chlorella vulgaris at varying pH[J]. Fujian Journal of Agricultural Sciences, 2010, 25(2): 142-148.

Citation:

XUE Ling-zhan, HUANG Zhong-chi, LIN Ze, HUANG Liu-ting, LIN Xue-wen, WU Mei-ying. Growth and competitiveness of Microcystis aeruginosa and Chlorella vulgaris at varying pH[J]. Fujian Journal of Agricultural Sciences, 2010, 25(2): 142-148.

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Growth and competitiveness of Microcystis aeruginosa and Chlorella vulgaris at varying pH

1.
Freshwater Fisheries Research Institute of Fujian Province, Fuzhou, Fujian 350002, China;
2.
College of Life Sciences, Fujian Normal University, Fuzhou, Fujian 350108, China

Received Date: 2010-01-29
Rev Recd Date: 2010-03-07
Publish Date: 2010-04-15

Abstract

Abstract

Uni-culture and co-culture experiments on Microcystis aeruginosa and Chlorella vulgaris were carried out at pH=5,6,7,8,9,10 and 11 under controlled laboratory conditions.The effects of pH on growth and competitiveness of these two algal species were studied.The growth and competing characteristics of M.aeruginosa and C.vulgaris were analyzed using the logistic equation and the Lotka-Volterra model. The results showed that the effects of pH on growth and competitiveness of the two algae were significant; M.aeruginosa grew better when pH=8-11,with an optimal pH of 9; and C.vulgaris grew quickly when pH=7-9,with an optimal pH of 8. In the co-culture experiments,M.aeruginosa had a competitive edge over C.vulgaris,with a β value higher than α at pH=8,9 or 10. However,at pH=7,C.vulgaris gained the upper-hand,with the α value higher than β.
- Microcystis aeruginosa,
- Chlorella vulgaris,
- pH,
- growth characteristics,
- competitive parameters

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References(6)

References

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