Table S2 Number of invertebrate macro-predators (whelks and sea stars) on rock surface (within 20630 cm quadrats, numbers extrapolated to 1 m2) in the low and mid shore levels, and within low shore crevices (per 10 min. search time). Surveys were conducted in the North Island on August 3, 2004, and the South Island on September 20, 2004. (DOC) Table S3 Fish abundance (per 15 min. swim per site) and visitation (mean ± SD of three 5 min. observations of an area c 20 m2 near experimental plots) and feeding activity rates (mean ± SD of three 5 min. observations near experimental plots) at the four Mt. Maunganui References 1. Agrawal AA, Ackerly DD, Adler F, Arnold AE, Caceres C, et al. (2007) Filling key gaps in population and community ecology. Frontiers in Ecology and the Environment 5: 145–152. 2. Lewin R (1986) Supply-side ecology. Science 234: 25–27. 3. 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