Energy Pyramid

Biology - High School


Table Of Contents: Energy Pyramid

1. Energy in a Food Web
Because organisms use food energy for movement, growth and daily activities, there is only a portion of energy available for the next organism in the food web.
2. What Is an Energy Pyramid?
An energy pyramid is a way to show the different levels of stored energy within an ecosystem. As you move up the pyramid, less energy is available.
3. Energy Transfer between Levels
Approximately 10% of the energy from one level is transferred to the next higher level. In this example, the top-level consumer receives only a small amount of energy that originated in the producer level.
4. Ecosystems and Number of Organisms
An ecosystem can only support a limited number of trophic feeding levels. There are many more organisms at the producer and first-level consumer levels than at the higher levels of the energy pyramid.