Habitat structure and its effects on bird assemblages in the Kalakad Mundanthurai Tiger Reserve, India

The majority of faunal studies focus on diversity and endemism on elevational gradients. It is claimed that a complex interplay of factors explains the variability of observed gradient patterns, including non-biological ones such as differences in sampling regime. Little is known of factors influencing bird community composition at local levels in tropical rainforest. Along successional gradients, habitat structure and tree species composition influence bird community structure, wherein structurally and floristically similar sites tend to have similar bird communities. In addition, canopy dwelling species have been often ignored or under sampled due to logistical problems. The present study explores variations in local bird community structure along a disturbance gradient in a tropical rainforest of the Western Ghats of India using traditional ground-based sampling in conjunction with canopy sampling.