Which species was mentioned as a keystone predator in kelp forest ecosystems?
“Sea otters” for which species was mentioned as a keystone predator in kelp forest ecosystems. This relationship follows from the ecological mechanism represented by the terms in the item, not merely from an association between their names. Species interactions are classified by their net effects on the fitness of each participant, but those effects can change with density, resource supply, life stage, and environmental stress. Competition reduces access to shared limiting factors, whereas predation and parasitism transfer resources from victim to consumer. The remaining alternatives—“Sea urch
Ref: Fundamentals of Ecology, Odum & Barrett, 5th Ed., Ch. 4
