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Accounts Quote by Richard Heinberg

“When a caterpillar eats a leaf, then a thrush eats the caterpillar, or when a hawk eats the thrush only 5 to 20% of usable energy is transferred from one level to the next. ... Thus herbivores will account for a much smaller fraction of the biomass [than plants] and the carnivores for a still…” quote by Richard Heinberg
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“When a caterpillar eats a leaf, then a thrush eats the caterpillar, or when a hawk eats the thrush only 5 to 20% of usable energy is transferred from one level to the next. ... Thus herbivores will account for a much smaller fraction of the biomass [than plants] and the carnivores for a still smaller fraction.”

Richard Heinberg

About This Quote

Source Book: The End of Growth, 2011

Energy loss occurs at each trophic level, limiting biomass of higher consumers.

In simple terms: Energy drops as you move up the food chain.

Key Takeaway

Recognize ecosystem energy constraints.

Themes

ecology energy food chains

Mood

analytical thoughtful

Type

scientific educational

When to use this quote

  • conservation planning
  • wildlife management
  • educational curricula
  • sustainable agriculture

Key Concepts

trophic efficiency biomass distribution

Questions to Reflect On

  • How does energy loss shape ecosystem stability?
  • What strategies can mitigate biomass loss?
A Different Perspective

Human activity can alter energy flow, but natural limits remain.

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