Mouse over a point to see summary data. Click on a point to see the full data record. Blue = first set, orange = second set.
new estimate = value of an unpublished richness estimator that uses sampling standardisation.
dominance = the proportion of individuals belonging to the most common species.
Fisher's alpha = the governing parameter of the log series distribution, which is correlated with richness.
geometric series k = the governing parameter of the geometric series distribution, which is strongly correlated with alpha.
Shannon's H = the information metric -sum(f ln(f)) where f = the species frequencies, a measure of richness and evenness.
Hurlbert's PIE = a sample-size corrected version of Simpson's D, a measure of richness and evenness with a stronger evenness signal.
Pielou's J = H/ln(S) where S = richness, a standard measure of evenness.
Good's u = 1 - s1/N where s1 = the number of singletons and N = the number of individuals, the accepted measure of frequency distribution coverage.