污染、藻类大爆发，以及气温上升都是影响甲壳类生物量降低的因素。
Pollution, algae blooms, and rising temperatures all have roles to play in places where where shellfish stocks are declining.
预测湖泊在不同磷负荷下藻类生物量的变化。
Variation prediction of algae quantity under different phosphorus load.
而藻类计数的结果表明，照度与底栖藻类生物量存在正相关性。
Algae counting experiment showed that there was positive correlation between algae and light intensity.
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