Habitat Characteristics and Population of Javan Langur (Trachypithecus Auratus E. Geoffroy Saint-Hilaire, 1812) In Leuweung Sancang Nature Reserve, Garut, West Java

This study aimed to determine habitat c haracteristics, food plants, population size , and distribution of J avan langur in Leuweung Sancang Nature Reserve. This  study was conducted from February to April in Leuweung Sancang Nature Reserve. Composition and structure of vegetation were determined using vegetation analysis .  P opulation and distribution of the javan langur were identified using concentration count method. A total of 110 plant species recorded in the javan langur’s habitat . Ketapang (Terminalia catappa ) was the dominant species in the study area composing 41,71% of the IVI. The Javan langur feed on at least 17 plant species. The plant parts eaten  by the Javan langur included leaves, buds, shoots, flowers and fruits. A total of 19 javan langur groups were encountered along the beach  forest of the nature reserve.  Number of individual at each of the group varied ranging from 7 to 17 individual s.  The population size was 227 individuals and t he population density was 0. 1 5 individuals per hectare . The javan langur’s age structure of adult : young : juvenile was 43 %: 27 %: 30 % indicating that the population was dominated by adult individuals and t he sex ratio of male:female was  1:3. Keywords: food plants, habitat, population, Trachypithecus auratus