Determining the Presence of Habitual Travel Route Networks in Orangutans (Pongo pygmaeus morio) in Kutai National Park, Borneo

Orangutan (Pongo pygmaeus morio) merupakan satwa langka yang harus dikonservasi melalui pelestarian Taman Nasional Kutai (TNK). Studi karakteristik sarang orangutan merupakan bagian dari upaya pelestarian. Metode yang digunakan dalam penelitian ini adalah menggunakan jalur transek dengan menghitung sarang orangutan serta mencatat karakteristik sarang orangutan yang meliputi kelas sarang, posisi sarang, tinggi sarang, tinggi pohon, diameter pohon dan jenis pohon sarang. Pada lokasi penelitian ditemukan sebanyak 173 sarang orangutan yang terdiri dari 84 sarang di resort Sangatta dan 89 sarang di resort Sangkima. Jenis sarang didominasi oleh kelas sarang C dan D dengan posisi sarang sebagian besar terdapat pada ujung dahan (UD) di resort Sangatta, posisi sarang terbanyak ada pada ujung dahan (UD) dan pucuk pohon (PP) di resort Sangkima. Rata-rata tinggi sarang orangutan adalah 12,2 - 40,2 m, diameter pohon 17,4 - 110 cm, dan tinggi pohon 12,2 - 40,2 m di resort Sangatta. Pada resort Sangkima rata-rata tinggi sarang orangutan adalah 10,2 - 24,2 m dengan diameter pohon 20 - 109,4 cm dan rata-rata tinggi pohon 14-28,6 m. Karakteristik sarang orangutan menjadi indikator kondisi habitat orangutan yang ada di TNK. Orangutan (Pongo pygmaeus morio) is a rare animal that must be conserved through the preservation of the Kutai National Park (KNP). Study of orangutan nest characteristics is part of conservation efforts. The method used in this study is to use a transect line by counting orangutan nests and noting orangutan nest characteristics which include nest class, nest position, nest height, tree height, tree diameter and nest tree species. At the study site, 173 orangutan nests were found, consisting of 84 nests at Sangatta resort and 89 nests at Sangkima resort. The nest type is dominated by the nest classes C and D with the nest position mostly found at the tip of the branch (UD) at Sangatta resort, the position of most nests is at the tip of the branch (UD) and tree tops (PP) at the Sangkima resort. The average height of orangutan nests is 12.2 - 40.2 m, tree diameter 17.4 - 110 cm, and tree height 12.2 - 40.2 m at Sangatta resort. At Sangkima resort, the average height of orangutan nests is 10.2 - 24.2 m with a tree diameter of 20 - 109.4 cm and an average tree height of 14-28.6 m. The characteristics of orangutan nests are an indicator of the condition of orangutan habitat in KNP.

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Age-Sex Class Differences in the Positional Behaviour of the Sumatran Orang-Utan (Pongo pygmaeus abelii) in the Gunung Leuser National Park, Indonesia

Folia Primatologica ◽

10.1159/000156260 ◽

1986 ◽

Vol 47 (1) ◽

pp. 14-25 ◽

Cited By ~ 72

Author(s):

Jito Sugardjito ◽

J.A.R.A.M. van Hooff

Keyword(s):

National Park ◽

Pongo Pygmaeus ◽

Class Differences ◽

Orang Utan

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First Bornean orangutan sighting in Usun Apau National Park, Sarawak

Biodiversity Data Journal ◽

10.3897/bdj.9.e60753 ◽

2021 ◽

Vol 9 ◽

Author(s):

Ahmad Ampeng ◽

Jack Liam ◽

Boyd Simpson ◽

Carl Traelholt ◽

Shukor Md Nor ◽

...

Keyword(s):

Species Distribution ◽

National Park ◽

Distribution Range ◽

Pongo Pygmaeus ◽

Bornean Orangutan

Wildlife surveys were conducted in Usun Apau National Park (UANP), Sarawak from Oct 2017 to Oct 2020. This was the first attempt to document fauna diversity in Usun Apau National Park on the UANP plateau at 1200-1400 m a.s.l. On 17 September 2020, 10 AM, we observed an orangutan individual, Pongo pygmaeus, over a period of one minute at Libut Camp UANP (E: 114039’.546, N: 2052’36.44) at 1,020 m a.s.l. We also recorded four nests and orangutan vocalisation twice. This observation is important for Bornean orangutan conservation as this was the first orangutan sighting in UANP and well outside the species distribution range for in Sarawak.

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Ecological constraints on the grouping of wild orang-utans (Pongo pygmaeus) in the Gunung Leuser National Park, Sumatra, Indonesia

International Journal of Primatology ◽

10.1007/bf02737112 ◽

1987 ◽

Vol 8 (1) ◽

pp. 17-41 ◽

Cited By ~ 74

Author(s):

J. Sugardjito ◽

I. J. A. te Boekhorst ◽

J. A. R. A. M. van Hooff

Keyword(s):

National Park ◽

Pongo Pygmaeus ◽

Ecological Constraints

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Niche Overlap between Pongo pygmaeus wurmbii and Helarctos malayanus Raffles within Small Scale Habitat in Punggualas Area, Sebangau National Park

Journal of Tropical Life Science ◽

10.11594/jtls.11.03.08 ◽

2021 ◽

Vol 11 (3) ◽

pp. 317-322

Author(s):

Adventus Panda ◽

◽

Widya Krestina ◽

Keyword(s):

National Park ◽

Niche Overlap ◽

Pongo Pygmaeus ◽

Species Selection ◽

Small Scale ◽

P Value ◽

Helarctos Malayanus ◽

Bornean Orangutan ◽

Snp Data ◽

Sun Bear

The Sebangau National Park is a major stronghold for Bornean Orangutan (Pongo pygmaeus wurmbii) ranging from 6000 â€“ 9000 individuals. In comparison with Bornean Orangutans, very little ecological fieldwork has been conducted to investigate sun bear biology, and there have been no thorough surveys of distribution or population densities. Thus, this study aimed to investigate the basic information on niche overlap between these two endangered species, specifically to quantify their relationship within the small-scale habitat in Punggualas area, SNP. Data was collected and measured during 15 â€“ 21 June 2019; using line transects methods. A total of 6580 m was walked along 8 consecutive transects. Bear and aging sign follow Augeri protocols. A total 18 printed mark-claw and 17 Orangutan nests was measured according to the mentioned methodology.Â The relationships between signs use binary logistic regressions (StatPlus for Mac) and PCA model (using R), while interspecific relationships use Co-Occurrence modeling, ESP for Windows. The results showed that there is no difference between bear sign and orangutan nest (c2: 26.249; df :1, p-value : 0.001); While the results on habitat selection between transects is failed to reject the null hypothesis (c2 = 0.29; df :1, p-value : 0.490). The Mann-Whitney U test, also confirmed no distinctive overlap between the Orangutan and the Sun Bear (Z: 0.84; p-value: 0.40). The co-occurrence simulations also revealed significant results (C-Score = 1.00), by means both target animals co-existed in the habitat.Â Obviously, the Orangutan and Sun Bear occupy the same habitat. There is no distinctive overlap between them in terms of tree species selection and having a close interrelationship in terms of feeding ground, whereas the fruiting is not available. The only distinctive difference is that the Bear sign was tend hindering waterlogged terrain.

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