宿鸭湖水库的浮游生物区系

PLANKTON COMMUNITY OF SUYAHU RESERVOIR

宿鸭湖水库是河南省平原区的一座大型水库。面积113.33 Km^2,平均水深1.4m、透明度11cm。从1986年1～11月对该库浮游生物采样调查,共采到浮游植物8门、27科、44属、其中绿藻门有17属、蓝藻门有10属、硅藻门有8属、黄藻门1属1个种类;浮游动物66属,其中原生动物13种,轮虫28种,枝角类18种,桡足类7种。浮游植物生物量平均1.08mg/L,其中蓝藻占15.8×10^(-2),隐藻占27.4×10^(-2),甲藻占1.6×10^(-2),金藻占4.5×10^(-2),硅藻占16.9×10^(-2),裸藻占35.6×10^(-2),绿藻占12.3×10^(-2)。浮游动物量平均3.60 mg/L,其中原生动物占2.89×10^(-2),轮虫占3.36×10^(-2),枝角类占77.98×10^(-2),桡足类占15.77×10^(-2)。初步探讨了浮游植物,浮游动物变化的若干规律。

Suyahu, a large reservoir with a total area of 113.33km^2 is located in the plain of Henan province. The mean depth and transparence of water are 1.4cm and 11cm respectively. From Jan. to Nov. in 1986, the plankton community was investigated. Phytoplankton samples were collected which belongde to 8 phylums, 27 families and 44 genra. among which there were 17 genera of chlorophyta, 10 genera of cyanophyta. 8 genera of bacillariophyta. 1 genera. I species of Xanthophyta, Altogether 66 species of zooplankton were collected, among which protozoad, rotifera, cladocera. copepoda were 13、28、18、7 species respectively. The biomass of phytoplankton was estimatedto be 1.08mg per litre, in which the cyanophyta presented 15.8×10^(-2), the cryptophyta—27.4×10^(-2), the pyrrophyta—16.20×10^(-2), the chrysophyta—44.6×10^(-2), the bacillariophyta—16.9×10^(-2), the euglenophyta—35.9×10^(-2), and chlorophyta—12.3×10^(-2). The average biomass of zooplankton was 3.597mg/L in which the protozoad presented 2.8×10^(-2), the rotifera 3.36×10^(-2), the cladocera 77.9×10^(-2) and the copepodaonly 15.77×10^(-2). The plankton community was preliminarily explored, the nourishment type of this reservior and its capacity of stocking fish of plankton were estimated.