Effects of Iron and Phosphorus on Microcystis Physiological Reactions

MING-MING OU; YAN WANG; BAO-XUE ZHOU; WEI-MIN CAI

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Volume 19 Issue 5

Oct. 2006

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Article Navigation > Biomedical and Environmental Sciences > 2006 > 19(5): 399-404

MING-MING OU, YAN WANG, BAO-XUE ZHOU, WEI-MIN CAI. Effects of Iron and Phosphorus on Microcystis Physiological Reactions[J]. Biomedical and Environmental Sciences, 2006, 19(5): 399-404.

Citation:

MING-MING OU, YAN WANG, BAO-XUE ZHOU, WEI-MIN CAI. Effects of Iron and Phosphorus on Microcystis Physiological Reactions[J]. Biomedical and Environmental Sciences, 2006, 19(5): 399-404.

Effects of Iron and Phosphorus on Microcystis Physiological Reactions

Department of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China

Abstract

Objective To observe the effects of iron and phosphorus on Microcystis physiological reactions. Methods The experimental conditions were chosen as the light dark cycles of 16 h 8 h, 12 h 12 h, and 8 h 16 h. The cell change of morphology and life history, cell number, cell color, and cell area of Microcystis were analyzed quantitatively. According to the resource competition and Monod equation, Microcystis kinetics of phosphorus and iron were also examined. Results The longer light time caused more special cell division, slower growth rate, and easier change of bigger cell area. The color of alga was changed from green to brown. Ks and μmax of phosphorus absorption were 0.0352 μ mol·L-1and 0.493 d-1, respectively. Those of iron absorption were 0.00323 μmol·L-1and 0.483 d-1. Conclusion Microcystis bloom is more dominant than other algae.
- Microcystis,
- Morphology,
- Light:Dark,
- Dynamics,
- Iron,
- Phosphorus
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

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Effects of Iron and Phosphorus on Microcystis Physiological Reactions

Department of Environmental Science and Engineering, Shanghai Jiaotong University, Shanghai 200240, China

Key words:

Abstract: Objective To observe the effects of iron and phosphorus on Microcystis physiological reactions. Methods The experimental conditions were chosen as the light dark cycles of 16 h 8 h, 12 h 12 h, and 8 h 16 h. The cell change of morphology and life history, cell number, cell color, and cell area of Microcystis were analyzed quantitatively. According to the resource competition and Monod equation, Microcystis kinetics of phosphorus and iron were also examined. Results The longer light time caused more special cell division, slower growth rate, and easier change of bigger cell area. The color of alga was changed from green to brown. Ks and μmax of phosphorus absorption were 0.0352 μ mol·L-1and 0.493 d-1, respectively. Those of iron absorption were 0.00323 μmol·L-1and 0.483 d-1. Conclusion Microcystis bloom is more dominant than other algae.

MING-MING OU, YAN WANG, BAO-XUE ZHOU, WEI-MIN CAI. Effects of Iron and Phosphorus on Microcystis Physiological Reactions[J]. Biomedical and Environmental Sciences, 2006, 19(5): 399-404.

Citation:

MING-MING OU, YAN WANG, BAO-XUE ZHOU, WEI-MIN CAI. Effects of Iron and Phosphorus on Microcystis Physiological Reactions[J]. Biomedical and Environmental Sciences, 2006, 19(5): 399-404.