Food Web
Click a species in the web to toggle it. Remove the keystone to see cascade effects.
Community Metrics
Species present—
Keystone present—
Dominant competitor—
Diversity H—
Paine 1966: removed Pisaster ochraceus (sea star) from rocky intertidal. Mussels (Mytilus) took over, driving 15→1 species. Keystone impact >> biomass. Introduced: Power et al. 1996 formal definition.