Study of marine ecological processes such as recruitment, disturbance, competition, and predation, and their effects on the structure and diversity of marine communities. Weekend field trips to local intertidal habitats required. Prerequisite: either FISH 270/OCEAN 270/MARBIO 270, BIOL 356, BIOL 472, or a minimum grade of 3.4 in either BIOL 180, BIOL 240, B BIO 180, or T BIOL 120 Offered: jointly with MARBIO 433.