PLAGIASI TUMBUHAN SUMBER PAKAN DAN BAGIAN TUMBUHAN YANG DIMAKAN BEKANTAN (Nasalis larvatus) DI HUTAN RAWA KECAMATAN GAMBUT, KABUPATEN BANJAR, KALIMANTAN SELATAN

Abstract

Leaves are the primary feeding source of proboscis monkey (Nasalis larvatus), Borneo endemic primates and protected by Indonesian law. The objective of the study was to inventory the plant species of feed sources and to determine the part of the plant that became the main feed for bekantan in the swamp forest. The number of species occurrences and parts of plants eaten by proboscis was calculated by the IARF method. The density of feeding source plant (pole level) was calculated in 5 (10 m x 10 m) plot and the sapling level in 5 (5 m x 5 m) subplots. The selection ratio of IARF/K and its relative selection ratio was determined. The feeding source plants were galam (Melaleuca leucadendron), mangium (Acacia mangium), and karamunting (Melastoma affine). The leaves were part of the plant that was the main source of feed. Karamunting was a plant that has the greatest selection ratio in the bekantan diet.