Butterfly community structure in Bukit Barisan Selatan National Park was investigated between September 2005 and May 2006. Ecological research was conducted at five different locations covering two different habitats: primary forest and secondary forest .
Butterflies were surveyed by conducting transect walks. Specimens that could not be designated to species in the field were caught with a sweep net and identified subsequently in the laboratory. We found 1825 individuals belonging to 185 species at BBSNP. Family Nymphalidae was commonly found in all location and forest type, and it dominates butterfly communities with its individual number that covers more than 50% of all collected specimen.
Two endangered species Trogonoptera brookiana (Kupu Trogon/ Rajah Brook’s Birdwing) and Troides near vandepolli were found only in a very limited number. Species richness in secondary forest was found to be higher than in primary forest. The findings from different sites at BBSNP showed that species composition of butterfly communities significantly related to habitat type. Our analyses indicated that forest transformation significantly affects the structure of Butterfly communities but not for species richness. Our data indicated that there is a site-specific species composition of butterfly communities and forest transformation that may contribute significantly to the presence of single species.