Figure 20.14 Pyramids of energy and biomass. (a) In terrestrial ecosystems, pyramids of energy and biomass have similar shapes because most of the energy and most of the standing biomass is found in the producers. (b) In aquatic ecosystems, most of the energy is still found in the producers, but these producers are primarily tiny algae that do not live very long because they are rapidly consumed by herbivores. This continual rapid consumption results in a large biomass of consumers in these systems.