从70年代末开始,随着表面荧光显微镜的广泛使用,越来越多的海洋生物学家和生态学家发现,微小的海洋球形蓝绿藻,也叫青蓝细菌,是海洋初级生产力的重要来源。它分布广泛,丰度很大,已有不少报道指出,在温带和热带水域,20—80％的初级生产来源于<1μm的个体。这些微小的有机体被称为微微浮游植物。由于它们个体太小,在通常的网采浮游植物中很难采到,用普通显微镜观察采水样品时也常常被遗漏或忽略,这就大大影响了 Since the late 1970s, with the widespread use of surface fluorescence microscopy, more and more marine biologists and ecologists have discovered that the tiny marine globular blue-green algae, also called Cyanobacteria, are important for the primary productivity of the oceans source. It is widespread and abundant, and many reports indicate that in temperate and tropical waters, 20-80% of primary production comes from individuals <1 μm. These tiny organisms are called pico-phytoplankton. Due to their small size, they are very difficult to be obtained in the usual net-harvesting phytoplankton. They are often overlooked or overlooked when using ordinary microscope to observe water-harvesting samples, which greatly affects