The theory of competitive exclusion is also referred to as what concept?

The theory of competitive exclusion is often summarized by the idea that no two species can occupy the same niche in the same habitat at the same time without one of them being driven to extinction or forcing the other to adapt to a different niche. This principle is rooted in the understanding that species competing for the same resources cannot coexist indefinitely if those resources are limited. Therefore, the correct concept associated with the theory of competitive exclusion is the idea of "one niche, one species."

This concept encapsulates the idea that a specific ecological role or niche can be filled effectively by only one species, leading to the conclusion that if two species are competing for the same niche, one will outcompete the other, resulting in either the exclusion or adaptation of the less competitive species. This foundational principle is significant in understanding biodiversity, species interactions, and the dynamics of ecosystems.