Predators also help in maintaining species diversity in a community, by reducing the intensity of competition among competing prey species". Give an example.

Explanation

(a) In the rocky intertidal communities of the American Pacific Coast the starfish Pisaster is an important predator.
(b) In a field experiment, when all the starfish were removed from an enclosed intertidal area, more than 10 species of invertebrates became extinct within a year, because of inter-specific competition.