Explanation

There is some sort of relationship between the numbers, biomass and energy contents of the producers and consumers of different orders in any ecosystem. These relationships, when represented in diagrammatic ways, are called ecological pyramids Ecological pyramids are of the types (i) Pyramid of number (ii) Pyramid of biomass (iii) Pyramid of energy The concept of pyramid was proposed by Charles Elton (1927) so, they are also called as Eltonian pyramids