Species' fundamental niche conditions are:
The fundamental niche contains the combinations of abiotic conditions and resources under which a species can maintain a nonnegative population growth rate when restrictive biotic interactions such as competition are absent. It represents potential occupancy, not necessarily the locations used in nature. Competitors often reduce this potential range to a smaller realized niche, while predators, pathogens, mutualists, and dispersal barriers can also alter actual distribution. Describing the fundamental niche as “exclusively abiotic conditions” is too narrow because resources are part of niche s
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13