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。
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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.