Umbrella species typically require:
“Extensive territories for viable populations” for umbrella species typically require. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Ecological interpretation requires separating the immediate process from its broader consequence. A mechanism operating through physiology or behavior can scale up to alter survival, reproduction, abundance, distribution, and community structure. The remaining alternatives—“Small habitats”, “Limited resources”, “Highly specialized diets”—refer to different states,
Ref: NCERT Biology Class 12, Ch. 15 Biodiversity and Conservation