Fig. 1. Population density scaling for intertidal invertebrates found in a protected (inside) and unprotected (outside) site in central Chile. The presence (outside) or absence (inside) of human exploitation is associated with strong changes in community composition and dominance as shown below each graph (after Durán and Castilla, 1989 and Marquet et al., 1990). Density (individuals m^-2); body mass (M_b) (g).