Why only 10% of energy reaches the top of the food chain
In short: Explore the fundamental physics governing marine life. This video explains how energy moves from the sun through various trophic levels, revealing why most energy is lost along the way.
Ecosystems rely on a constant flow of high-quality energy to maintain their structure and facilitate the movement of matter through biogeochemical cycles. In marine environments, this process begins with the sun, providing energy to producers at the lowest trophic levels.
The video highlights the '10% rule,' which estimates that only about 10% of energy is successfully transferred from one trophic level to the next. This significant loss at each stage dictates the limits of biomass and the complexity of marine food webs.
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Sources
- Summary by Intellect · source: Energy flow in a marine ecosystem| Matter and Energy Flow| AP Environmental Science| Khan Academy
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