What role do herbivores have in a food pyramid?

Herbivores occupy the second trophic level in a food pyramid, serving as primary consumers that directly feed on producers, such as plants and algae. They convert the energy stored in these producers into a form that can be utilized by higher trophic levels, including carnivores and omnivores. By doing so, herbivores play a crucial role in maintaining the balance of ecosystems, supporting energy flow, and influencing plant populations. Their presence also facilitates nutrient cycling within the environment.