Nesting Behavioral Adaptations of Orangutan (Pongo Pygmaeus Morio) in Coal Mining Area in East Kalimantan

Niningsih, Liza; Atmoko, Sri Suci Utami; Alikodra, Hadi S.; Mulyani, Yeni

doi:10.29303/jbl.v4i2.811

Cited by 4 publications

(3 citation statements)

References 30 publications

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“…ARPB memiliki struktur dan komposisi vegetasi yang sangat berbeda dengan hutan alam yang merupakan habitat alami orangutan. Habitat alami orangutan merupakan habitat yang kompak dan utuh, kaya akan berbagai spesies vegetasi termasuk pohon buah dan liana berkayu yang menjadi sumber pakan utama bagi orangutan (Niningsih et al, 2016). ARPB miskin spesies pohon dimana hanya dijumpai ±28 spesies pohon yang ±80 % diantaranya adalah spesies eksotik.…”

Section: Metode Penelitianunclassified

Estimasi Populasi Orangutan Di Areal Reklamasi Pertambangan Batubara Di Kutai Timur, Kalimantan Timur

Liza Niningsih

2023

j.sains, j.saintifik, j.multidisiplin

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Orangutans (Pongo spp.) are currently found only on the islands of Sumatra and Borneo. Bornean orangutan (Pongo pygmaeus) face a high risk of extinction due to almost 80% of the distribution of orangutans in Kalimantan occurs outside of conservation areas. Orangutans are also found in the Coal Mining Rehabilitation Area called ARPB in Sangatta, East Kutai, East Kalimantan. The objective of this research was to estimate the orangutan population living in ARPB in Sangatta. Data collection used direct observation to orangutan found in ARPB. This study has found 41 orangutans in ten ARPBs covering an area of 912.29 ha, from November 2013 to January 2015. The orangutans found consists of 17.07% of adult males, 39.02% of adult females, 12.20% of juveniles, 9.76% of children, and 21.95% of infants. This was an indication of the success of orangutans’ adaptation in the coal mining area, especially in ARPB. The fact about population and demographic structure of orangutans in ARPB leads to indications of the success of orangutans in adapted in ARPB.

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Section: Metode Penelitianunclassified

Estimasi Populasi Orangutan Di Areal Reklamasi Pertambangan Batubara Di Kutai Timur, Kalimantan Timur

Liza Niningsih

2023

j.sains, j.saintifik, j.multidisiplin

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“…This position is supposed to have been chosen due to the need for a larger nest and a body weight that is not too substantial to be sustained between tree branches. According to Niningsih et al (2021), orangutans who build nests in position 2 have a body weight that allows them to survive in tree branches that are not on the main trunk of the tree.…”

Section: Nesting Behaviormentioning

confidence: 99%

Daily behavioral research on Sumatran Orangutan (Pongo abelii) mothers and offsprings at Suaq Balimbing Research Station, Gunung Leuser National Park, Aceh Province, Indonesia

et al. 2022

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Abstract. Sutekad D, Jannah M, Fitri L, Fauziah F. 2022. Daily behavioral research on Sumatran Orangutan (Pongo abelii) mothers and offsprings at Suaq Balimbing Research Station, Gunung Leuser National Park, Aceh Province, Indonesia. Biodiversitas 23: 5108-5121. Discovering the daily behavior of female orangutan mothers and their offspring can provide information for use as a recent reference in orangutan conservation action plans. This research aims to determine the daily behavioral patterns of mother and offspring Sumatran orangutans (Pongo abelii) at the Suaq Balimbing research station. This study was conducted between June 2019 and March 2020 and used focal animal sampling as the method. The method used consists of searching and daily behavioral logging. The results of the research showed that six orangutan mothers and offsprings (three mother-offspring pairs) showed different behavioral patterns. The distinction was felt in the distribution of time spent on activities. Eating, moving, resting, nesting, and social activity are all part of an orangutan's daily behavior. The proportion of time allocation used in the daily activities of female mother and Sumatran orangutan pairs (Pongo abelii) that is successfully observed in the Suaq Balimbing research station are eating (68.79%), resting (11.59%), moving (11.02%), nesting (1.11%), others (5.04%) and unknown (2.45%). Orangutans' diet plants in Suaq Balimbing consist of 30 species from 25 families, including the liana diet, plants consumed with the seeds, and plants consumed by the bark. According to the findings of this study, the behavior of a mother Sumatran orangutan, while it is with its offspring can be described.

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“…Orangutans build new nests every night for rest, and they rarely reuse old nests or reused nest (Rayadin and Saitoh, 2009;Prasetyo et al, 2009). According to Niningsih et al (2021) reused nest, the orangutan reused the old nets either by repairing or without any reparation. Orangutans usually repair the old nest by adding fresh leaves or limbs.…”

Section: Introductionmentioning

confidence: 99%

Nesting Behavior of Kalimantan Orangutan Pongo pygmaeus as a Release Subject at Forest School Sekolah Hutan Tembak Lestari, Sintang, West Kalimantan, Indonesia

Sjahfirdi,

Atsiil Suandhy,

Mitra Setia

2023

AAVS

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This research investigated nesting behavior in Bornean orangutans (Pongo pygmaeus) as a suitable release subject at the Sekolah Hutan Tembak Lestari forest school, Sintang, West Kalimantan, Indonesia. This study aims to evaluate two orangutan release candidates through nest-building skills. These two orangutans were observed daily between 04:30 and 06:30 pm from September to November 2019 using continuous focal animal and all-occurrence sampling methods. Nest-building skills were assessed using the Likert scale. Moni (male orangutan) was always observed to nest using used nests. Meanwhile, Terra (female orangutan) was frequently observed building new nests, although she was caught sleeping on the forest floor several times. During observations, it was found that they prefer nest trees with a circumference of more than 1 m with a reasonably dense canopy refers preferred trees that serve as nesting sites, those are bambang tree (Lithocarpus sp.) with a tree circumference of 3 m and kempilik tree (Quercus sp.) 2.46 m and often reuse or rebuild old nests. Our results showed that both orangutans had moderate predicate nest-building skills, with a percentage of 68.06% for Moni and 63.89% for Terra. Nonparametric Mann-Whitney U statistical tests, (α = 0.05; p = 0.415) showed that the nest-building ability between the two individuals is not significantly different. With nest-building ability not significantly different between the two orangutans with a moderate predicate, the two orangutans can be released together.

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Nesting Behavioral Adaptations of Orangutan (Pongo Pygmaeus Morio) in Coal Mining Area in East Kalimantan

Cited by 4 publications

References 30 publications

Estimasi Populasi Orangutan Di Areal Reklamasi Pertambangan Batubara Di Kutai Timur, Kalimantan Timur

Estimasi Populasi Orangutan Di Areal Reklamasi Pertambangan Batubara Di Kutai Timur, Kalimantan Timur

Daily behavioral research on Sumatran Orangutan (Pongo abelii) mothers and offsprings at Suaq Balimbing Research Station, Gunung Leuser National Park, Aceh Province, Indonesia

Nesting Behavior of Kalimantan Orangutan Pongo pygmaeus as a Release Subject at Forest School Sekolah Hutan Tembak Lestari, Sintang, West Kalimantan, Indonesia

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