Habitat association of trees in a 50-ha Malaysian rain forest plot

概要

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We studied species-habitat associations by dividing a 50-ha forest plot in the Pasoh Forest Reserve, Malaysia, into 5000, 10 × 10 m2 quadrats and assigned each quadrat to one of three habitats based on parent materials and drainage: well-drained hilly parts and ridge tops (habitat 1), moderately drained, topographically flat sites (habitat 2), and poorly drained riverine sites (habitat 3). Torus-translation tests revealed that 60.0% of 492 species had significant positive or negative associations with habitats in at least one of the three habitats. Differences in species density among the three habitats led to differences among habitats in the relative importance of species. For example, the most abundant species on habitat 2 (Anaxagorea javanica Blume) was the 52nd and 2nd most abundant species on habitats 1 and 3, respectively. We can thus conclude that species-habitat associations play a role in the distribution of tree species in the 50-ha plot and in determining variations in local floristic composition of the Pasoh forest.
日本熱帯生態学会の論文