Feeding on plankton and benthos , relatively small animals .
吃浮游生物与底生生物,相对较小的动物。
As the water becomes shallower , the benthos changes .
但是当水变浅时,生物相会改变。
Pertaining to the environment and conditions of organisms living at the water bottom , or benthos .
属于在水底生活的生物(或称底栖生物)的条件与环境。
Table 1 composition of species of benthos at each section ( number of species )
各断面底栖生物的种类组成(种类数)
Among the total 38 species , we found crustacea with 20 species , mollusca with 12 species , polychaeta 4 species and other benthos 2 species .
共获底栖动物38种,其中甲壳动物20种,软体动物12种,多毛类4种,其他2种。
The progress of researches about marine benthos ecology were summavized , especially in artificial habitat ecosystem , anatomied the deficiency of researches about benthos ecology in artificial habitat ecosystem and the difference comparing with researches in international , which also can provide some bases for researches in the future .