In course of the energy flow, the proportion of total flow originating from detritus is 48%, and from primary producer is 52%.

在能量流动过程中，直接来源于碎屑的比例占总流量的48%，而直接来源于初级生产者的比例为52%。

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In addition, the macroalgae served as a primary producer in the paleoecosystem to provide an alternative food for the metazoarl.

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。

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As the primary producer of forest ecosystems the forest productivity reflects the structure and function of plant community synthetically.

森林生产力是森林生态系统中作为第一性生产者植物群落结构与功能的综合体现。

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Marley's primary producer told me a haunting story about him.

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Based on current production levels in the industry, output of 7.5 million ounces would make the new company the fifth-largest primary silver producer in the world, as well as one of the lowest-cost producers after by-product credits, McEwen reported.

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By comparison, Hindalco was mainly a low-cost producer of primary aluminum and copper.

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