Definition of Adaptive zone

In ecology, a niche (pronounced nich, neesh or nish) is a term describing the relational position of a species or population in its ecosystem. The ecological niche describes how an organism or population responds to the distribution of resources and competitors (e. g., by growing when resources are abundant, and predators, parasites and pathogens are scarce) and how it in turn alters those same factors (e.g., limiting access to resources by other organisms, acting as a food source for predators and a consumer of prey).