During ecological compression, food items:
“Range remains constant” for during ecological compression, food items. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. A niche is the multidimensional set of abiotic conditions, resources, and biotic relationships under which a population can persist. The fundamental niche reflects physiological and resource limits, while the realized niche is modified by competitors, consumers, mutualists, and dispersal barriers. The remaining alternatives—“Diet diversity decreases significantly”, “Diet diversit
Ref: Ecology: Concepts and Applications, Molles, 9th Ed., Ch. 13