Several significant changes were found in the composition of the rotifer, cladoceran and copepod assemblages.
许多重要的变化被发现在轮虫，枝角类和桡足类群体的组成中。
The species of cladoceran and copepod in Shiquan River are fewer. From the specimens we observed 5 families 8 genus 18 species of cladoceran and the dominant species are A.
