How does high species richness generally increase an ecosystem's resistance to a targeted disturbance?

Answer

The community as a whole is less likely to be completely wiped out.

High species richness contributes to resistance because having a wider array of species present means that a specific event is less likely to eliminate the entire community.

How does high species richness generally increase an ecosystem's resistance to a targeted disturbance?
EcologyEcosystemResiliencebiodiversity