How does parasitism increase stability in a ecosystem?

Parasitism can increase stability in an ecosystem by regulating host populations, preventing any single species from becoming overly dominant. This balance helps maintain biodiversity, as a variety of species are supported within the ecosystem. By controlling host population sizes, parasites can also promote resilience, allowing ecosystems to better withstand environmental changes and disturbances. Additionally, the complex interactions between parasites and hosts can foster evolutionary adaptations, further enhancing ecosystem stability.