ecological pyramid
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Fig. 141 Ecological pyramid . A hypothetical elcological pyramid for standing crop ontropical grassland. Figures in kcal m-2yr-1.
ecological pyramid
a graphical means of illustrating the trophic structure or trophic function of communities. They are of three general types:- the PYRAMID OF NUMBERS, which illustrates the numbers of organisms at each TROPHIC LEVEL (see Fig. 263 ).
- the pyramid of BIOMASS, based on DRY WEIGHT (or occasionally live weight) at each level at a given time.
- the pyramid of energy which shows the energy flow between each level. See FOOD CHAIN.