ecological efficiency

biology

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June 25, 2026

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Ecological efficiency refers to how energy is transferred between trophic levels in an ecosystem. Primary producers, like plants, convert solar energy into chemical energy through photosynthesis, but only about 1% of this solar energy is captured. When herbivores consume plants, only about 5-25% of that energy is passed on. This percentage further decreases for carnivores that eat herbivores.

This energy loss, primarily as heat during metabolic processes, results in a pyramid of energy, with the most energy at the producer level and progressively less at higher trophic levels. On average, only about 10% of energy is transferred from one trophic level to the next. This limits the overall productivity of the biosphere.12

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biosphere
Energy transfers and pyramids
…level to another is called ecological efficiency. On average it is estimated that there is only a 10 percent transfer of energy (Figure 2).
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…level to another is called ecological efficiency. On average it is estimated that there is only a 10 percent transfer of energy (Figure 2).
Read More