滤食性贝类对浮游植物群落增殖作用的研究

Role of filter-feeding bivalves in proliferation of phytoplankton community

报道了在室内实验条件下贝类对浮游植物促长 (间接 )作用的研究结果 .数据表明 ,贝类对浮游植物有明显的促长作用 ,并且浮游植物的增长与贝类密度呈正相关 .贝类对浮游植物的促长作用随藻类种类的不同具有较大的差别 ,主要取决于藻类对营养盐的需求量 .由于贝类排泄产物和排泄量存在种间差异 ,因而对浮游植物具有不同的促长效果 .

Studies on the role of filter feeding bivalve in the proliferation of phytoplan kton under artificial conditions in laboratory show that filter feeding bivalve had an obvious effect on phytoplankton growth which was positively correlated w ith the density of bivalve. Such an effect was quite different with different s pe cies of phytoplankton,and mainly depended on their needs for nutrient salts.Diff erent species of filter bivalve had different promotion effect on phytoplankton ,because of the different quantities and components of their excretions.