浮游植物是水生食物网的基础，作为初级生产者，它们是小到微观浮游动物、大到数吨的鲸鱼的食物。
Phytoplankton are the foundation of the aquatic food web, the primary producers, feeding everything from microscopic, animal-like zooplankton to multi-ton whales.
同时，宏体藻类作为生态系统中的初级生产者成为一种新的食物，改变了后生动物的食谱。
In addition, the macroalgae served as a primary producer in the paleoecosystem to provide an alternative food for the metazoarl.
海藻是食物链中的初级生产者，是动物、微生物的摄食、侵袭对象。
As an elementary producer in food chain, algae was preyed on by animals and microbe.
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