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  • What are the three types of ecological pyramids? What information is conveyed by each pyramid with regard to structure, function, and energy in the ecosystem?

What are the three types of ecological pyramids? What information is conveyed by each pyramid with regard to structure, function, and energy in the ecosystem?

 

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Following are the three types of ecological pyramids: -

  1. Pyramid of Numbers: It is arranged from the lower trophic levels at the bottom to the higher trophic levels above and shows the number of individuals at each level. Mostly, these pyramids have a wider base (higher producer population).
  2. Pyramid of Biomass: It is arranged from the lower trophic levels at the bottom to higher trophic levels above and shows the biomass (dry weight) at each level. Mostly, these pyramids have a wider base (higher producer population).
  3. Pyramid of Energy: It is arranged from the lower trophic levels at the bottom to the higher trophic levels above and shows the energy consumed at each level. These pyramids have a wider base. Unlike the other pyramids, this can never have an inverted shape.

In all pyramids, a particular trophic level represents a functional level and an organism may be present at more than a single level. Energy always flows from prey to predator and the availability of energy reduces at subsequent levels.

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Gurleen Kaur

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