and substrate composition and coral community composition at each survey location. Coral composition, quantified using photoqudrats, was shown for 8 dominant genera with different color slices; other 11 low abundance coral genera (1.2–11.9%) were pooled and shown in white color. Open circle indicates the location of Hoi Ha Wan, a site with severe bioerosion reported by Lam et al. (2007) (For interpretation of the references to colour in this figure legend, the reader is
referred to the web version of this article.)