Daily Activity of Proboscis Monkey (Nasalis larvatus Wurmb. 1878) in Disturbed and Degraded Habitat of Peat Swamp-Riparian Ecosystem of Rawa Gelam, at Tapin Regency, South Kalimantan-Indonesia
Keywords:
Proboscis monkey, Nasalis larvatus, daily activity, peat swamp habitat.Abstract
The daily activity of proboscis monkeys was studied on the degraded habitat of peat swamp ecosystem of Rawa Gelam, Tapin Regency, South Kalimantan Province. Data of daily activities were collected by followed the groups from early morning until late afternoon when the monkey went to the sleeping tree using the Scan sampling and Ad liebetum methods.
The all of the groups observed has recorded almost have the same daily activities pattern, i.e. group 1 feeding 28.79%; moving 14.56%; resting 53,37% and social activity 3,28%. group 2 feeding 30.92%; moving 15.41%; resting 50.75% and social activity 2.91%. group 3 feeding 32.61%; moving 13.16%; resting 52.75% and soc[1]ial activity 1.47%, and group 4: feeding 32.08%; moving 13.97%, resting 51.64% and social activities 2.31%. Proboscis monkey eating leaves (89.4%), flowers (6.82%) and fruits (3.78%). The monkeys have different food preference when dry season and rainy season. Several times recorded proboscis monkey eating lotus flower. The monkeys used different height level when eating and resting. In dry season, the monkey mostly used 0-5 meters and used 5-10 meters in the rainy season. The lenght of daily range of proboscis monkey varies between 432 meters - 860 meters with an average length of 600.5 meters. Home range size of target groups of proboscis monkey were varied, which is group one 26 hectares, group two 32 hectares, groups three 21.25 hectares and group four 22.5 hectares.
The daily activity of proboscis monkeys was studied on the degraded habitat of peat swamp ecosystem of Rawa Gelam, Tapin Regency, South Kalimantan Province. Data of daily activities were collected by followed the groups from early morning until late afternoon when the monkey went to the sleeping tree using the Scan sampling and Ad liebetum methods.
The all of the groups observed has recorded almost have the same daily activities pattern, i.e. group 1 feeding 28.79%; moving 14.56%; resting 53,37% and social activity 3,28%. group 2 feeding 30.92%; moving 15.41%; resting 50.75% and social activity 2.91%. group 3 feeding 32.61%; moving 13.16%; resting 52.75% and soc[1]ial activity 1.47%, and group 4: feeding 32.08%; moving 13.97%, resting 51.64% and social activities 2.31%. Proboscis monkey eating leaves (89.4%), flowers (6.82%) and fruits (3.78%). The monkeys have different food preference when dry season and rainy season. Several times recorded proboscis monkey eating lotus flower. The monkeys used different height level when eating and resting. In dry season, the monkey mostly used 0-5 meters and used 5-10 meters in the rainy season. The lenght of daily range of proboscis monkey varies between 432 meters - 860 meters with an average length of 600.5 meters. Home range size of target groups of proboscis monkey were varied, which is group one 26 hectares, group two 32 hectares, groups three 21.25 hectares and group four 22.5 hectares.
The daily activity of proboscis monkeys was studied on the degraded habitat of peat swamp ecosystem of Rawa Gelam, Tapin Regency, South Kalimantan Province. Data of daily activities were collected by followed the groups from early morning until late afternoon when the monkey went to the sleeping tree using the Scan sampling and Ad liebetum methods.
The all of the groups observed has recorded almost have the same daily activities pattern, i.e. group 1 feeding 28.79%; moving 14.56%; resting 53,37% and social activity 3,28%. group 2 feeding 30.92%; moving 15.41%; resting 50.75% and social activity 2.91%. group 3 feeding 32.61%; moving 13.16%; resting 52.75% and soc[1]ial activity 1.47%, and group 4: feeding 32.08%; moving 13.97%, resting 51.64% and social activities 2.31%. Proboscis monkey eating leaves (89.4%), flowers (6.82%) and fruits (3.78%). The monkeys have different food preference when dry season and rainy season. Several times recorded proboscis monkey eating lotus flower. The monkeys used different height level when eating and resting. In dry season, the monkey mostly used 0-5 meters and used 5-10 meters in the rainy season. The lenght of daily range of proboscis monkey varies between 432 meters - 860 meters with an average length of 600.5 meters. Home range size of target groups of proboscis monkey were varied, which is group one 26 hectares, group two 32 hectares, groups three 21.25 hectares and group four 22.5 hectares.
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