Appendix A. Figures showing an assay of grazing intensity at Carpinteria Reef and Coal Oil Point.
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| FIG. A1. Grazing pressure in barren (gray bars) and forested (open bars) areas of Carpinteria Reef and Coal Oil Point during fall 2004. (a) The mean (± 1 SE) density of purple urchins and (b) the mean (± 1 SE) grazing intensity after 24 hours. Grazing intensity was calculated as 1 – the proportion of kelp remaining in exposed vs. protected treatments. |