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 smaller fraction.”
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.
Recognize ecosystem energy constraints.
Themes
Mood
Type
When to use this quote
- conservation planning
- wildlife management
- educational curricula
- sustainable agriculture
Key Concepts
Questions to Reflect On
- How does energy loss shape ecosystem stability?
- What strategies can mitigate biomass loss?
Human activity can alter energy flow, but natural limits remain.