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Ecological meaning and bloom controlling of different density of Silver carp followed with Potamogeton crispus in enclosures
Wang Hai-zhen; Liu Yong-ding (liuyd@ihb.ac.cn); Xiao Bang-Ding; Li Dun-Hai; Chen De-Hui; Inst Hydrobiol, Chinese Acad Sci, Wuhan, 430072, China
2004
Source PublicationActa Hydrobiologica Sinica
ISSN1000-3207
Volume28Issue:2Pages:141-146
AbstractAs we know, Silver carp ( Hypophthalmichthys molitrlx) could decrease the biomass of the blue-green algae and have effect on species composition of phytoplankton, but different environment needs different density of Silver carp to control the cyanobacterial bloom. Dianchi lake is situated at Yungui Plateau,and the environment of it is different from other lakes. So the experiment was carried out. In this study, four enclosures in the same size, with an area of 100m2 and a depth of 85cm, and sediment inside,were constructed near Dianchi Lake. And the water inside the enclosures came from the surface of Dianchi lake. Three enclosures were cultured with 100g/m3 , 75g/m3 and 50g/m3 of biomass of Silver carp respectively, and tile left one was as control. During two months, the Chla. of phytoplankton were decreasing and the SD of the water were improving in enclosures cultured with Silver carp. The enclosure with 75g/m3 of Silver carp improved the ecology well. Through putting the fish into the enclosures, the outbreaking of the cyanobacterial bloom was controlled, the dominant species of algae changed, and the biodiversity of phytoplankton increased. In order to study the effects of the Potamogeton crispus L. followed with Silver carp on the ecology of the enclosures. Continual experiment was done. After culturing the fish for two months,the enclosures which had-been cultured with Silver carp were planted with Potamogeton crispus L. and the aquatic plants in enclosure with 75g/m3 of Silver carp grew better than in others, the zooplankton appeared with large amounts, and the SD of the water increased more.
Indexed By其他
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/18125
Collection期刊论文
Corresponding AuthorWang Hai-zhen; Inst Hydrobiol, Chinese Acad Sci, Wuhan, 430072, China
Recommended Citation
GB/T 7714
Wang Hai-zhen,Liu Yong-ding ,Xiao Bang-Ding,et al. Ecological meaning and bloom controlling of different density of Silver carp followed with Potamogeton crispus in enclosures[J]. Acta Hydrobiologica Sinica,2004,28(2):141-146.
APA Wang Hai-zhen,Liu Yong-ding ,Xiao Bang-Ding,Li Dun-Hai,Chen De-Hui,&Inst Hydrobiol, Chinese Acad Sci, Wuhan, 430072, China.(2004).Ecological meaning and bloom controlling of different density of Silver carp followed with Potamogeton crispus in enclosures.Acta Hydrobiologica Sinica,28(2),141-146.
MLA Wang Hai-zhen,et al."Ecological meaning and bloom controlling of different density of Silver carp followed with Potamogeton crispus in enclosures".Acta Hydrobiologica Sinica 28.2(2004):141-146.
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