benthic

In the stream with strong bed load movement there is no benthic macroinvertebrate.

河势散乱且河床运动剧烈的支流物种丰度和密度均很低甚至为零，生态件。

Closely associated with the benthic community are organisms collectively called periphyton or aufwuchs.

但是当水变浅时，生物相会改变。