How is natural selection related to the concept of niche?

Niches are restricted because neighboring species with similar ecological characteristics prevent expansion into other niches or even narrow down niches. This continual struggle for existence is an important assumption of natural selection.

1 Answer
May 30, 2016

A niche is both an opportunity and a selector in natural selection.


Assuming random variations in species, a niche environment may provide a unique advantage for a particular variation, enabling it to become the dominant form of the organism in that environment.

A niche may provide a 'springboard' for adaptation to a wider ecosphere or a 'dead end' in further expansion.