Appendix B. A figure demonstrating independence of richness estimates from sampling effort.
|FIG. A1. Independence of richness estimates from sampling effort. (a) Fourteen regions used in analyses. All sites in the database are represented by the red points, with those encompassed in the blue circles used in the regression analyses. (b) Linear regression analyses of regional richness and the number of sites or phycological studies. There was no relationship between richness and either the number of sites (P = 0.47, R 2.0.1) or the number of phycological studies (P = 0.365, R 2.0.1).|