Ecological diversity is significant in preventing ecosystem collapse as it enhances stability and resilience under environmental stressors. Diverse ecosystems can better withstand changes and disturbances, such as climate change or disease outbreaks, as different species fulfill various ecological roles. This diversity allows for greater adaptability and survival since some species may thrive where others fail. Maintaining biodiversity is essential for overall ecosystem health and functioning, ultimately supporting the sustainability of natural resources that humans rely upon.