Explain ecological pyramids

Asked by raginigupta445 | 20th Jan, 2016, 05:01: PM

Expert Answer:

  • An ecological pyramid is a graphical representation of an ecological parameter, such as numbers, biomass or accumulated energy, at different trophic levels in a food chain in an ecosystem.
  • These pyramids are also called Eltonian pyramids named after their discoverer Charles Elton in 1927.
  • The base of the pyramid always represents the producers or the first trophic level, and the apex represents the top level consumer or the last trophic level.
  • Ecological pyramids are of three types—pyramid of numbers, pyramid of biomass and pyramid of energy.

Pyramid of numbers

  • A pyramid of numbers is constructed on the basis of the number of individuals which occupy a particular trophic level in a given area at a given time.

Pyramid of biomass

  • A pyramid of biomass is a graphical representation of biomass or organic matter present per unit area in different trophic levels.

Pyramid of energy

  • A pyramid of energy is a graphical representation of energy flow within an ecosystem.

Answered by Sheetal Kolte | 20th Jan, 2016, 05:52: PM