STATUS POPULASI DAN KONSERVASI BEKANTAN (Nasalis larvatus Wurmb. 1787) DI HABITAT RAWA GELAM, KALIMANTAN SELATAN

Iskandar, Sofian; Alikodra, Hadi S.; Bismark, M.; Kartono, Agus Priyono

doi:10.20886/jphka.2017.14.2.123-132

Cited by 11 publications

(11 citation statements)

References 3 publications

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“…Selain berfungsi sebagai upaya pelestarian satwa liar melalui pengelolaan habitat dan pemantauan populasi, keberadaan areal NKT juga dapat dikelola tanpa menghilangkan nilai ekonomi dari lahan perkebunan untuk budidaya (Iskandar, Alikodra, Bismark, & Kartono, 2017). Untuk itu, perusahaan perkebunan sawit memiliki kewajiban penting untuk membuat panduan khusus untuk mengelola dan memantau areal NKT serta mengadakan kerja sama antar pihak untuk dapat berperan aktif dalam menjaga keanekaragaman hayati (Nurjannah, Amzu, & Sunkar, 2017).…”

Section: Tabel (unclassified

Keanekaragaman Jenis Herpetofauna sebagai Dampak Pembangunan Perkebunan Kelapa Sawit di Sumatera Selatan

Faritsi

Santosa

2021

Jur.pen.hut.konservasi

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Section: Tabel (unclassified

Keanekaragaman Jenis Herpetofauna sebagai Dampak Pembangunan Perkebunan Kelapa Sawit di Sumatera Selatan

Faritsi

Santosa

2021

Jur.pen.hut.konservasi

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“…Pemantauan populasi dirasa sangat penting sebagai pengembangan dan pengelolaan kawasan jangka panjang (Wich & Mashall, 2016). Akan tetapi, jika pengelolaan kawasan tidak memperhatikan kelestarian habitat, maka populasi di kawasan tersebut dapat terancam (Iskandar, Alikodra, Bismark, & Kartono, 2017).…”

Section: Tabel (unclassified

Kepadatan populasi, lutung kelabu, mangrove, pakan, sebaran

Rachman¹,

Farajallah²,

Iskandar³

2022

Jur.pen.hut.konservasi

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Silvery lutung (Trachypithecus cristatus) is one of the primates of Cercopithecidae family distributed in Kalimantan and Sumatra. Its habitats are coastal areas, mangroves, shorelines and riparian areas. Currently, research on the silvery lutung has been widely carried out on Sumatra island, but there is a lack of information about the species on Borneo Island. One of the interesting habitats to study is the restored mangrove forest. This study aimed to determine the distribution and population density of the silvery lutung and identify the type of feed in Handil Baru Village, Samboja Sub District, Kutai Kertanegara District, East Kalimantan. Initial information that can be extracted is in the form of an ecological study. The population density was determined by direct observation using the Concentration Count method, while the distribution was analyzed using ArcGIS software version 10.4. We found three groups of silvery lutung in the mangrove area of Handil Baru Village, scattered in Handil Baru Muara, Raden River, and Mantri River. The average population density in each area was 6.63 individuals/ha; 2.65 individuals/ha and 0.72 individuals/ha, respectively, with the number of individuals per group ranging from 17-24. There were 22 plant species found as food sources for the lutungs. The population density was influenced by the extent of habitat use, the number of individuals at the location, and food availability. This research can be used as a reference for habitat management and regional development that contributes to the preservation of silvery lutung. Kata kunci: Kepadatan populasi, lutung kelabu, mangrove, pakan, sebaran ABSTRAK Lutung kelabu (Trachypithecus cristatus) merupakan salah satu primata dalam famili Cercopithecidae yang tersebar di Kalimantan dan Sumatera. Habitatnya yaitu daerah pesisir mangrove, tepi pantai dan riparian. Saat ini, penelitian lutung kelabu banyak dilakukan di pulau Sumatera, namun masih kurang informasi di pulau Kalimantan. Salah satu habitat yang menarik adalah hutan mangrove hasil restorasi. Penelitian ini bertujuan untuk mengetahui distribusi dan kepadatan populasi lutung kelabu, serta mengindentifikasi jenis pakannya di Kelurahan Handil Baru, Kecaamatan Samboja, Kabupaten Kutai Kertanegara, Kalimantan Timur. Informasi awal yang dapat digali adalah berupa kajian ekologi. Kepadatan populasi diketahui melalui pengamatan langsung dengan metode Concentration Count, sedangkan distribusi lutung dianalisis menggunakan software ArcGIS ver. 10.4. Penelitian ini menemukan tiga kelompok lutung kelabu pada kawasan mangrove Kelurahan Handil Baru, yang tersebar di wilayah Handil Baru Muara, Sungai Raden dan Sungai Mantri. Kepadatan populasi rata-rata yaitu sebesar 6,63 individu/ha di Handil Baru Muara 2,65 individu/ha di Sungai Raden dan 0,72 individu/ha di Sungai Mantri, dengan jumlah individu per kelompok antara 17-24 individu. Terdapat 22 jenis tumbuhan sebagai sumber pakan lutung kelabu. Kepadatan populasi dipengaruhi oleh luas penggunaan habitat, jumlah individu pada lokasi tersebut...

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“…Tanjung Puting (C Kalimantan) Riparian 62.6 Yeager (1989) Menanggul River (Sabah) a Riparian 28.8/29.8/34.0 Murai (2004)/ Matsuda (2008)/ Boonratana (1993) Rawa Galam (S Kalimantan) Riparian 28.3 Iskandar et al (2017) Tanjung Belimbing (W Kalimantan) Riparian 25.5 Selpa et al (2019) Kinabatangan Floodplain (Sabah) a Mixed 6.9/7.9 Goossens et al (2002)/ Sha et al (2008) Samunsam Wildlife Sanctuary (Sarawak) Mixed 5.9 Bennett and Sebastian (1988) Klias Peninsula (Sabah) Mixed 4.4 Bernard and Zulhazman (2006) Merah River (Sabah) Mangrove 10.0 Boonratana (1993) Bako (Sarawak) Mangrove 24.1 Berau Delta (S Kalimantan) Mangrove 6.6 Atmoko et al (2021) Pemaluan River (E Kalimantan) b Mangrove 7.5 Lhota and Gokil (2011, unpubl. data) Hutan Kariangau b Mangrove 6.9 Toulec et al (this study) Somber River b Mangrove 51.5 Toulec et al (this study) Note: The general method was boat surveys, but varied in survey effort and group classification.…”

Section: Locationmentioning

confidence: 99%

A decade of proboscis monkey (Nasalis larvatus) population monitoring in Balikpapan Bay: Confronting predictions with empirical data

Toulec

Lhota

Scott

et al. 2022

American J Primatol

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Systematic and well‐structured monitoring is essential for taxa with high extinction risk such as primates. Endangered proboscis monkeys Nasalis larvatus are endemic to Borneo, where they are found scattered across lowland habitats of the island, which are under strong anthropogenic pressure. A large population of proboscis monkeys in Balikpapan Bay, Indonesian Borneo, was predicted to decline due to the ongoing habitat loss and degradation, notably because of forest fires. We examined changes in the number and composition of groups of a part of this population from 2007 to 2017, which included a period of forest fires linked to the El Niño–Southern Oscillation events. We conducted a census from a boat; attempting to locate all proboscis monkey groups within the Balikpapan City administrative area in 2007, 2012, and 2017. During the most recent census, we observed a total number of 60 proboscis monkey groups in two subpopulations. The population density was 1.14 group per km2 of suitable habitat. Contrary to previously published predictions, we did not find evidence of a population decline. Contrary to predictions, the 2015 El Niño induced fires impacted mainly forests on ridges and slopes, thus affecting only a small part of the proboscis monkey habitat located close to rivers and mangrove swamps. However, the increasing population density of monkeys, coupled with ongoing habitat degradation and habitat loss in one of the subpopulations, suggests that proboscis monkey population in Balikpapan Bay may be approaching a limit of resilience to habitat changes. In case it proves infeasible to census all individuals in the whole population, we recommend using a group‐level census, connected with systematic group counts to obtain a reasonably precise proboscis monkey population size estimate.

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STATUS POPULASI DAN KONSERVASI BEKANTAN (Nasalis larvatus Wurmb. 1787) DI HABITAT RAWA GELAM, KALIMANTAN SELATAN

Cited by 11 publications

References 3 publications

Keanekaragaman Jenis Herpetofauna sebagai Dampak Pembangunan Perkebunan Kelapa Sawit di Sumatera Selatan

Keanekaragaman Jenis Herpetofauna sebagai Dampak Pembangunan Perkebunan Kelapa Sawit di Sumatera Selatan

Kepadatan populasi, lutung kelabu, mangrove, pakan, sebaran

A decade of proboscis monkey (Nasalis larvatus) population monitoring in Balikpapan Bay: Confronting predictions with empirical data

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