Species-habitat associations in a Sri Lankan dipterocarp forest

摘要: Forest structure and species distribution patterns were examined among eight topographically defined habitats for the 205 with stems ≥ 1 cm dbh inhabiting a 25-ha plot in Sinharaja rain forest, Sri Lanka. The steep spurs, less-steep gullies gullies, all at either lower or upper elevations. Mean stem density was significantly greater on spurs than lower, gullies. Stem also higher within each elevation category upper-elevation habitat its corresponding lower-elevation habitat. Basal area varied less habitats, but followed similar trends to density. Species richness Fisher's alpha habitats. These differences appeared be related abundances of dominant species. Of 125 subjected torus-translation tests, 99 (abundant abundant those different strata) showed least one positive negative association more associations relatively frequent previous findings seedling ecophysiology, morphology anatomy some specialists suggest that edaphic hydrological variation topography, accompanied by canopy disturbances varying intensity, type extent along catenal landscape, plays major role partitioning this forest.