Data for 'Expansion of intertidal mussel beds following disease-driven reduction of a keystone predator'

To test whether the absence of keystone predation due to disease produced changes to the species composition of rocky intertidal communities, I took advantage of a natural experiment involving mass mortality of the keystone predator <i>Pisaster ochraceus </i>from Sea Star Wasting Syndrome. This data contains records of mussel size, mussel position, mussel bed depth, species composition, and changes to the sea star populations of the North American Pacific coast.