【摘要】 初步研究了 1998年河口区斑节对虾淡化养殖塘生态系中的浮游生物状况。各塘浮游植物生物量变幅较大 ,平均含量为 36 .33± 2 8.4 0mg/L ;浮游植物总密度均值为 3.0 5± 2 .18× 10 8cells/L ,水体已呈富营养化状态。浮游植物的生物量及种类数均以蓝藻占优势 ,其次是绿藻和硅藻 ,这与我国传统家鱼高产池塘的浮游植物群落结构显著不同。各塘浮游动物丰度与组成变化较大 ,不如浮游植物稳定。浮游植物与浮游动物生物量之比平均为 0 .90 3:1,斑节对虾塘尚有进一步开发的潜力更多还原

【Abstract】 The paper deals with the preliminary study on the plankton in lower salinity ponds cultured with Penaeus monodon in 1998. The biomass of phytoplankton varied remarkably in different ponds and the mean value was 36.33 ±28.40 mg/L. However,total phytoplankton density was almost identical and remained stable at 10 8 organisms or cells per liter. The average value was 3.05±2.18×10 8 cells per liter,which showed the water was in eutrophy. The Cyanophyta (blue algae) predominated in the culture ponds either according to the biomass or according to the species of phytoplankton. The second dominant algae in ponds was Chlorophyta (green algae) or Bacillariophyta (diatom). The dominant species in prawn ponds differed significantly from that in fish ponds. The abundance and composition of zooplankton were remarkably different and were not so stable as those of phytoplankton. The mean ratio of phytoplankton biomass to zooplankton was 0.903∶1,and the Penaeus monodon culture ponds still had potential to be developed.更多还原