An exhaustive floristic inventory was conducted in three 1-hectare plots in a forest logging concession area on the eastern slopes of the Diwata Mountains in Surigao del sur, Mindanao, Philippines. Each plot was subdivided into 25 quadrats of 20 x 20 m2. All plants within each plot with stem diameter > 5 cm were marked, tagged, identified, and mapped. The plot design and the marking, tagging and mapping of the plants followed the procedure outlined in the biodiversity monitoring software BioMon. The population structure, importance values, and species association were also analyzed for each plot. Soil smaples and leaf tissue samples of the five dominant species in each plot were analyzed for chemical composition of metallic elements. Biodiversity indices were computed using the software program BioPro.
