Table 2.
Measures of tree species and genera diversity.
| Bray-Curtis Index |  | where nik are the number of individuals of taxon k at site i, and njk the number at site j | similarity/dissimilarity of communities |
| Simpson Diversity Index (SDI) |  | where ni is number of individuals of taxon i | more sensitive to species and genera evenness |
| Shannon-Wiener Diversity Index (H) |  | where ni is number of individuals of taxon i | more sensitive to species and genera richness and to sample size |
| Evenness | eH/S | where S is number of taxa | quantifies the similarity of species and genera frequencies |
| Inverse SDI | 1/SDI | where SDI is the Simpson Diversity Index statistic | measures diversity rather than dominance |
| Effective Diversity | eH | where H is the Shannon-Wiener Diversity Index statistic | not logarithmic, unlike the Shannon-Wiener Diversity Index (H), and therefore more directly comparable |