Question
What does an Ecological Pyramid indicate? Explain the three different types of Upright Pyramids in nature with the help of an example of each.
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Answer
An ecological pyramid is the graphic representation of the number, food/ energy relationship or biomass of the different trophic levels of a food chain at a given time.
- In general the pyramids of number, of biomass and of energy are upright.
- It is because the producers are more in number and biomass than the herbivores and the herbivores are more in number and biomass than the carnivores.
- The pyramid of energy in any ecosystem is always upright because energy at the producer level is the highest and decreases at successive higher trophic levels; when energy flows from one trophic level to the next, higher trophic level, some amount of energy is lost as heat and only 10% of the energy is transferred.
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