Classification tree of abiotic factors differentiating amongst communities. The regression tree shows independent environmental factors most closely related to the variation of communities. The communities were shown at the bottom of each branch of the independent environmental factors. The graph classifies environmental factors according to predictive strength (top to bottom). Abbreviations of the abiotic factors are defined in Table 3 and Appendix 3. The numbers give the communities: 1 = Saraca dives + Calamus tetradactylus community. 2 = Sterculia lanceolata + Chloris barbata community. 3 = Ficus superba + Acanthus ebracteatus community. 4 = Clausena excavata + Desmos cochinchinensis community.