Communities Can Be Keystone Too

Since Paine’s classic work in the rocky intertidal describing the effects of Pisaster  starfish on the community as a keystone predator species, the concept has become huge to ecology. A keystone species is one with an important role in the community and has a larger effect on the community than would be expected by its abundance. In the rocky intertidal, when starfish were removed from the system, the population size … Continue reading