| ENCLOSURE EXPERIMENTS ON AND LACUSTRINE PRACTICE FOR ELIMINATING MICROCYSTIS BLOOM |
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| 作者姓名： | 刘建康 谢平 |
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| 作者单位： | InstituteofHydrobiology,ChineseAcademyofSciences,Wuhan430072,China |
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| 摘 要： | Microcystis bloom, one of the most objectionable characteristics of eutrophication in tropical and subtropical waters, occurred in Donghu Lake (East lake) of Wuhan every summer from the 1970s up to 1984, but from 1985 up to now failed to occur there. The cause of its disappearance rema-ined in obscurity until recently. In situ enclosure experiments in the lake for three years showed that the stocking of the filter-feeding silver carp ( Hypophthalmichthys molitrix ) and big-head carp (Aristichthys nobilis ) played a decisive role in eliminating Microcystis bloom from the lake; but that recurrence of the bloom is possible under certain conditions. This paper presents the details and the results of enclosure ex-periments. The authors‘ analysis of fish biomass data obtained by echo-sounding and the fishery produc-tion of the lake over the years, revealed that the recurrence of Microcystis bloom can be prevented so long as the combined biomnss of silver carp and big-head carp remains at or exceeds 50 g per cubic meter of lakewater, as was the case in the lake‘s 1985 fish yield of 1015 t.
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| 关 键 词： | 实验 热带 亚热带 超营养作用 东湖 鲤鱼 大头鲤鱼 |
| 收稿时间： | 1 September 2001 |
| 修稿时间： | 27 September 2001 |
Enclosure experiments on and lacustrine practice for eliminatingMicrocystis bloom |
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| Liu Jian-kang,Xie Ping.ENCLOSURE EXPERIMENTS ON AND LACUSTRINE PRACTICE FOR ELIMINATING MICROCYSTIS BLOOM[J].Chinese Journal of Oceanology and Limnology,2002,20(2):113-117. |
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| Authors: | Liu Jian-kang Xie Ping |
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| Institution: | (1) Institute of Hydrobiology, Chinese Academy of Sciences, 430072 Wuhan, China |
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| Abstract: | Microcystis bloom, one of the most objectionable characteristics of eutrophication in tropical and subtropical waters, occurred in Donghu
Lake (East Lake) of Wuhan every summer from the 1970s up to 1984, but from 1985 up to now failed to occur there. The cause
of its disappearance remained in obscurity until recently.In situ enclosure experiments in the lake for three years showed that the stocking of the filter-feeding silver carp (Hypophthalmichthys molitrix) and big-head carp (Aristichthys nobilis) played a decisive role in eliminatingMicrocystis bloom from the lake; but that recurrence of the bloom is possible under certain conditions. This paper presents the details
and the results of enclosure experiments. The authors' analysis of fish biomass data obtained by echo-sounding and the fishery
production of the lake over the years, revealed that the recurrence ofMicrocystis bloom can be prevented so long as the combined biomass of silve carp and big-head carp remains at or exceeds 50 g per cubic
meter of lakewater, as was the case in the lake's 1985 fish yield of 1015 t.
This work was supported by FEBL (State Key Laboratory for Freshwater Ecology and Biotechnology of China) funds and by the
Natural Science Foundation of China (Grant No. 3937014). |
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| Keywords: | Microcystis bloom elimination enclosure experiments silver carp (Hypophthalmichthys molitrix) big-head carp (Aristichthys nobilis) fish-stocking practice of Donghu Lake |
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