tlsb=-0.06pt?>Density and basal area of the dipterocarps, not of D. oliveri, differed significantly between communities (Table 4).
The dry deciduous dipterocarp forest was a D. tuberculatus–Shorea siamensis association, the mesic phase a D. obtusifolius–D. tuberculatus association (Table 4).
As expected, the mixed deciduous forest had a higher evenness (Table 1). S. obtusa was the leading dipterocarp but there was not a real association of dominant species.
With comparable importance values to the least dominant dipterocarps, D. oliveri was a co-dominant component of
the mixed deciduous forest and the mesic phase of the deciduous dipterocarp forest (Table 4).
Despite being outnumbered because of the extreme density of small dipterocarps, D. oliveri occupied a
predominant social status in the dry deciduous dipterocarp forest (social tree class sensu Kraft, 1884), where it was an emergent or canopy tree with exceptionally well-developed crown and full direct overhead light (Fig. 4).