【摘要】 研究了流水轮虫培育池(14#)、静水轮虫培育池(15#)和轮虫饵料培养池(11#)中不同粒级浮游植物,特别是超微藻类对浮游植物叶绿素和初级生产力的贡献。结果表明,在14#池中,超微藻类、微型藻类和小型藻类的叶绿素a含量分别占总叶绿素a含量的3.7%、82.9%和13.4%。各粒级浮游植物初级生产力分别占总生产力的13.6%、66.0%和20.4%。在11#池中,超微藻类、微型藻类和小型藻类的叶绿素a含量分别占总叶绿素a含量的4.5%、16.1%和79.4%。各粒级浮游植物初级生产力分别占总生产力的9.0%、78.9%和12.1%。在15#池超微藻类、微型藻类和小型藻类的叶绿素a含量分别占总叶绿素a含量的4.7%、22.3%和73.0%。各粒级浮游植物初级生产力分别占总生产力的12.4%、60.8%和27.8%。水体中的初级生产力主要是由微型藻类提供,占总量的60.8%～78.9%,在轮虫培育池生态系统中微型藻类是主要生产者。更多还原

【Abstract】 Primary productivity, biomass and chlorophyll-a of size fractionated phytoplankton (<0.2m,<2 μm and <200 μm) were estimated in three ponds. The ratio of the concentrations of chlorophyll-a of the phytoplankton to the total chlorophyll-a in the corresponding size of pico- (<2μm), nano- (2-20μm) and micro- (20-200μm) in the experimental ponds 14 was 3.7%, 82.9% and 13.4%, respectively. The ratio of the production of size fractionated phytoplankton to the total phytoplankton production corresponding to pico-, nano- and micro-algae were 13.6%, 66% and 20.4%, respectively. The ratio of the concentrations of chlorophyll-a of the phytoplankton to the total chlorophyll-a in the corresponding size of pico- (<2 μm), nano- (2-20μm) and micro- (20-200μm) in the experimental ponds 11 was 4.5%, 16.1% and 79.4%, respectively. The ratio of the production of size fractionated phytoplankton to the total phytoplankton production corresponding to pico-, nano- and micro- algae was 9.0%, 78.9% and 12.1%, respectively. The ratio of the concentrations of chlorophyll-a of the phytoplankton to the total chlorophyll-a in the corresponding size of pico-, nano-and micro-algae in the experimental ponds 15 was 4.7%, 22.3% and 73.0%, respectively. The ratio of the production of size fractionated phytoplankton to the total phytoplankton production corresponding to pico-, nano- and micro- algae was 12.4%, 60.8% and 27.8%, respectively. Nano-algae are important producers in rotifer culturing ponds ecosystems.更多还原