Describes the total range of environmental conditions that are suitable for a species existence without the effects of interspecific competition and predation from other species.

The range of condition under which an organism could survive if it were the only one in the environment. (Contrast with realized niche.)

The multidimensional space that an animal would occupy under optimal conditions in the absence of competitors; also called preferred niche. Contrast with realized niche.

Set of resources and physical factors required for survival and reproduction of individuals of a species; see also Realized Niche

the full potential range of the physical, chemical, and the biological factors a species can use if there is no competition from other species. See ecological niche. Compare with realized niche.