All organisms require energy. The feeding relationship in an ecosystem can be shown in a foodchain. Learn about pyramids of biomass, energy and numbers.
A pyramid of energyA diagram that shows the relative quantities of energy at each stage in a food chain shows the total quantity of available energy stored in the biomass of organisms at each level in the food chain of an ecosystem per year. This can be estimated by burning samples of organisms and measuring the heat released.
Pyramids of energy show that the producers store the highest quantity of energy and the energy stored then decreases at each level in the food chain of the ecosystem.