Closely associated with the benthic community are organisms collectively called periphyton or aufwuchs.
但是当水
，生物相会改。
；水底
;;;;;
;;;Closely associated with the benthic community are organisms collectively called periphyton or aufwuchs.
但是当水，生物相会改。
In the stream with strong bed load movement there is no benthic macroinvertebrate.
河势散乱且河床运动剧烈支流物种丰度和密度均很低甚至为零，生
条件差。
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