Hydrobiology of a flooding ecosystem, Lake Chenhu in Hanyang, Hubei, with preliminary estimation of its potential fishery production capacity

Liang Yanling; Wang Ji; Hu Chuanlin

doi:10.1007/BF02846563

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Hydrobiology of a flooding ecosystem, Lake Chenhu in Hanyang, Hubei, with preliminary estimation of its potential fishery production capacity

Updated：2023-05-16

- Hydrobiology of a flooding ecosystem, Lake Chenhu in Hanyang, Hubei, with preliminary estimation of its potential fishery production capacity
- Journal of Oceanology and Limnology Vol. 6, Issue 1, Pages: 1-14(1988)
- Affiliations：
  
  Institute of Hydrobiology
- Author bio：
- Funds：
- DOI：10.1007/BF02846563
  CLC：
- Published：1988
- Accepted：
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Yanling, L., Ji, W. & Chuanlin, H. Hydrobiology of a flooding ecosystem, Lake Chenhu in Hanyang, Hubei, with preliminary estimation of its potential fishery production capacity., Chin. J. Ocean. Limnol. 6, 1–14 (1988). https://doi.org/10.1007/BF02846563
DOI：

Yanling, L., Ji, W. & Chuanlin, H. Hydrobiology of a flooding ecosystem, Lake Chenhu in Hanyang, Hubei, with preliminary estimation of its potential fishery production capacity., Chin. J. Ocean. Limnol. 6, 1–14 (1988). https://doi.org/10.1007/BF02846563 DOI：

摘要

Abstract

For the purpose of fishery development

a hydrobiological investigation of Lake Chenhu was carried out in 1983 with reference to the productivity of various food organisms as well as fish. Of the entire lake

the annual net primary production was determined to be 27

818×106 kcal for phytoplankton

898×106 kcal for macrophytes and 64

840×106 kcal for wet land vegetation. The annual secondary production chiefly from gastropods was 2

632×106 kcal. On the basis of 1981–1982 fishery data

the production of the main stocked fishes in the lake was also roughly computed. Analysing all obtained production data

we find the energy conversion rate of food organisms to fish in the water at the present stage is fairly low. Even in 1982

the year of better fishery management

food energy converted to plankton feeders or herbivores was only 1.6–1.8%; energy converted to fish yield was even lower

only 0.2–0.8%. To get a potential fish output of the ecosystem

a tentative estimation of fishery capacity of Lake Chenhu was made by using the index of food quotients and relevant conversion factors. The theoretical fish production in the lake is estimated to be around 6

000 t and

through the improvement of fishery management

an annual fish yield of 2

000 t can be expected.

关键词

Keywords

references

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Winberg, G.G. (ed.), 1971. Symbols, Units and Conversion Factors in Studies of Fresh Water Productivity. IBP Central Office, pp. 382–404.

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