Fig. 2.

Wet mass (grams per 800 cm², mean + SE) of larger upright fleshy macroalgae on settlement blocks accessible (+H) or inaccessible (−H) to herbivores, both without (−N) and with (+N) nutrient enrichment, when deployed on a protected reef (MPA; black bars) or on an adjacent fished reef (non-MPA; white bars) for 152 days (n = 10 per treatment per site). P values are from a three-factor analysis of variance (ANOVA) on rank-transformed data. Letters indicate significant groupings from a Tukey multiple comparisons test. Horizontal bars indicate non-significant differences between sites (S), within a treatment