Analyses of Vegetation Used by Long-tailed Macaque (<i>Macaca fascicularis</i> Raffles 1821) in Tinjil Island

Tinjil Island is a semi-natural breeding facility for long-tailed macaques (Macaca fascicularis) managed by Primate Research Center, IPB University, located at the southern of Java and surrounded Indian Ocean. Long-tailed are considered frugivorous even though they well-known their flexible diet. This study aims to analyse vegetation supporting population macaques. Data were collected from six tracks using square sampling plots with size 20 m x trees as main plot, inside plot subplots consisting 10 poles, 5 saplings, 2 seedlings. The Important Value Index (IVI) was calculated each level vegetation. Hanjuang (Dracaena elliptica) dominated seedlings 29.35%, followed Kampis (Hernandia peltata) 18.73%, Kalapari (Pongamia pinnata) 13.73%. also saplings 26.83%, Pancal (Syzygium antisepticum) 19.19%, Laban (Vitex pubescens) 12.30%. poles Ki Cau (Dolichandrone spathacea) high 59.28%, while Waru (Thespesia populnea) Ciat (Ficus septica) 40.47% 36.15%, respectively. 39.28%, Ara glomerata) 35.56%, Langir (Dysoxylum amooroides) 28.70%. Species found on mostly Moraceae (9.84%) Fabaceae (9.84%), Malvaceae (8.20%), Euphorbiaceae (4.92%), Myrtaceae Anacardiaceae (4.92%). in supports livelihood island because have an abundance food staple such figs help them fulfil energy needed survive reproduce.