Maximum diversity (species richness) estimators applied to the NE Madagascar surveys, based on random samples of 6, 7, 8, 10, 12, 15, 20, 25, 30 and 36 samples*.

Sobs - Curve of observed species counts; Chao 1 - Chao's estimator based on number of rare species; Chao 2 - Chao's estimator using just presence-absence data; Jacknife 1 - Jacknife estimator based on species that only occur in one sample; Jacknife 2 - Second order jacknife estimator; Bootstrap - Bootstrap estimator based on proportion of quadrats containing each species; UGE - Calculated species accumulation curve; Michaelis-Menten - MM are points on the curve fitted to Sobs, with curve parameter Smax = asymptote at infinity [39], [88]–[92].Notes:*The only condition for including a sample in these subsamples was that for cases of methods for cases where sampling of species was constrained by other objectives during a dive, so records were taken only of new species seen in that dive).