结果表明，池鹭的种群密度和生物量最高。
The results showed that the population density and biomass of Ardeola bacchus were higher.
试验结果表明：水体增温对水库浮游植物的种群组成、优势种的优势度、藻类密度和生物量均有影响。
The results of investigation and indoor simulated test showed there were effects of increased water bodies temperature on the structure, dominant, density and biomass of phytoplankton community.
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