An organism's fundamental niche represents:
“Hypothetical conditions without competition” for an organism's fundamental niche represents. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Niche differentiation reduces overlap by separating species along resource, space, or time axes. Such partitioning can stabilize coexistence when each species performs relatively better under the conditions it uses most strongly. The remaining alternatives—“Actual conditions where it lives”, “Conditions with predators”, “Only biotic factors”—refer to differe
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13