Shorea siamensis

dipterocarp, Shorea siamensis and Dipterocarpus obtusifolius, that are contrasting, both in terms of ecology and economic uses. Shorea siamensis is cut by local people for construction timber. It is predominantly pollinated by a species of weak-flying bee. As disturbance increases (see figure opposite) the density of mature trees falls by a factor of 10. At the same time, the density of flowers per tree increases dramatically. More