The effect of selective and clearcut logging on stem density and regeneration of six important resource trees, namely, Cullenia exarillata, Aglaia bourdillonii, Artocarpus heterophyUus, Myrislica dactyloides, Gomphandra coriacea and Palaquium eUipticum, were studied. Forests logged 24 years ago were compared with an unlogged forest. Belt transects (10 x 100 m) were established to enumerate adult trees (>10 cm dbh). Subplots (10 x 10 m) along the belt transects at 0-10,40-50 and 90-100 m were enumerated
for saplings (1-10 cm dbh). Adult stem density was significantly lower in both selectively logged and clearcut logged sites for all species except A. heterophyUus. Palaquium ellipticum-was missing in clearcut logged sites. The higher dbh class (>50 cm) remained missing in the logged forests after 24 years. Sapling densities of A. heterophyUus and P. ellipticumviere significantly reduced in the selectively logged forests. In the clearcut logged forest, other species had significantly reduced sapling density except A. bourdillonii. Palaquium eUipticum had no saplings in the clearcut logged forest. The adult:sapling ratios were generally high in the unlogged forest. Low adult density and reduced regeneration potential of these species in the logged sites suggest that the medium elevation evergreen forest at Kalakad-Mundanthurai Tiger Reserve, Agasthyamalai Range, is degraded by logging.