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Flow of energy through an ecosystem HTML5


An ecological pyramid is a quantitative representation of the trophic levels of a food chain. There are three types of ecological pyramids:

  • Pyramid of numbers
  • Pyramid of biomass
  • Pyramid of energy

The detrivores and decomposers are not always represented in these pyramids but they play an essential role in the cycle of materials.

Learning goals

  • Understand the different ways to quantify the trophic relationships of a food chain.

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A food chain refers to in general 3 or 4 tropic levels. Each trophic level obtains its energy from the inferior levels. The first level functions from solar energy. It groups autotrophic organisms…

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