My research focus remains an intensive, long term experimental investigation of the factors organizing and therefore producing observable structure on a spectacularly diverse rocky shore exposed to heavy wave action. Major projects involve predator mediated coexistence, the strength of interactions and food web structure, the interplay between grazing intensity and benthic algal production, and factors generating alternative community states. Food-web analysis through field measurements of per capita interaction strength. M.J. Tegner and E.A. Johnson.
Compounded perturbations yield ecological surprises.
Parrish, J.K., M. Marvier and R.T. Paine.