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水生态学杂志 2011
Plankton Composition and Potential Productivity in Yunlonghu Reservoir
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Abstract:
Plankton was investigated in Yunlonghu Reservoir in June and October 2005. 28 genera of phytoplankton belong to 6 phylums were collected during the experiment period. The mean density was 4.925×106 ind/L and the biomass was 1.62mg/L. 29 genera of zooplankton were collected, with protozoa 11 genera, 10 genera of rotifer, 4 genera of cladocera and 4 genera of copepoda. The mean density was 3.04×104ind/L and the biomass was 2.59mg/L. The potential productivities of silver carp and bighead carp assessed by biomass of plankton was 83639.7kg, in which,15603.64kg of silver carp and 68036.06kg of bighead carp. If the catch size of silver carp and bighead carp were 750g and 1250g, the theoretic stocking ratio of silver carp to bighead carp was 4:11.
