The level in a food web with the highest amount of total available energy is the producer. The producer is a photosynthetic organism that can harness the energy from light that generally comes from the sun. As the energy is passed from trophic level to trophic level, only about 10-20% of the energy is passed on, while the rest is lost as heat. For instance, if a producer had a total energy amount of 60 kj/m2yr, then the primary consumer would only be able to gain 6-12 kj/m2yr.
primary producer
primary producer
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On an ecological pyramid or in a food chain, typically, the highest trophic levels have the least amount of energy from the sun available for the next highest level. In a typical food chain, this would be the tertiary consumer level.
Humans.
Producers
hot dogs
an energy pyramid
Energy that can be transfered to the next level
In a food chain and food web the energy is getting reused by the next level so the energy is not being created or distorted, just reused.
About 10%
A consumer depends on the trophic level below it for energy.
A consumer depends on the trophic level below it for energy.
Trophic level
The stored energy that does not advance from one trophic level of the food chain to the next either disappears into the air or is used by the organism containing it.