Figure 1.

Pisaster ochraceus is a keystone predator in intertidal communities in the American north-west. In a classic experiment Robert Paine removed starfish from the shoreline and found the communities became much less diverse and dominated by a single species of mussel (Mytilus californianus). Image credit: D. Gordon E. Robertson.

Godfray and May BMC Biology 2014 12:22   doi:10.1186/1741-7007-12-22
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