Table 7. Tree species and abundance characteristics in the two communities.


Variable Community-level counts and estimates Community-level means (SDs) of household plot data (n = 30)
Community A Community B Community A Community B
Number of species in plots 169 146 13.1 (2.0)* 11.0 (2.0)*
Number of exclusive species (%)† 71 (32.6) 62 (28.4)
Margalef diversity 4.37 (0.54)* 3.79 (0.56)*
Simpson index (1/D) 56.10 (26.90)* 33.73 (20.17)*
Shannon index (H) 2.48 (0.19)* 2.29 (0.19)*
Predicted jacknife 248.07 214.33
Predicted Chao 1 295.17 257.36

*P < 0.05, two-tailed t-tests at the mean plot level.
†As a percentage of all species found in both communties (n = 218).