An ecological pyramid (also trophic pyramid or energy pyramid) is a graphical representation designed to show the biomass or biomass productivity at each trophic level in a given ecosystem.
Biomass is the amount of living or organic matter present in an organism. Biomass pyramids show how much biomass is present in the organisms at each trophic level, while productivity pyramids show the production or turnover in biomass.
Ecological pyramids begin with producers on the bottom (such as plants) and proceed through the various trophic levels (such as herbivores that eat plants, then carnivores that eat herbivores, then carnivores that eat those carnivores, and so on). The highest level is the top of the food chain.
Other articles related to "biomass pyramid, pyramid":
... An ecological pyramid of numbers shows graphically the population of each level in a food chain ... The diagram to the right shows a (nonfictional) example of a five level pyramid of numbers 10,000 fresh water shrimps support 1,000 bleak, which in turn support 100 perches followed by 10 northern pikes and ...
Famous quotes containing the word pyramid:
“So universal and widely related is any transcendent moral greatness, and so nearly identical with greatness everywhere and in every age,as a pyramid contracts the nearer you approach its apex,that, when I look over my commonplace-book of poetry, I find that the best of it is oftenest applicable, in part or wholly, to the case of Captain Brown.”
—Henry David Thoreau (18171862)