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All Journal HAYATI Journal of Biosciences MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Biodjati Jurnal Penelitian Pendidikan IPA (JPPIPA) Wahana Forestra: Jurnal Kehutanan Journal of Environmental Engineering & Waste Management ULIN: Jurnal Hutan Tropis Indonesian Journal of Electrical Engineering and Computer Science Jurnal Risalah Kebijakan Pertanian dan Lingkungan Jurnal Agristan JURNAL HUTAN TROPIS Jurnal Ilmu Kehutanan International Journal of Oil Palm
YANTO SANTOSA
2Department Of Forest Resources Conservation And Ecotourism, Faculty Of Forestry, Bogor Agricultural University, Darmaga Campus, Bogor 16680, Indonesia
Agriculture, Biological Sciences & Forestry Humanities Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Energy Engineering Environmental Science Materials Science & Nanotechnology Physics Social Sciences

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ANALISIS POLA PENGGUNAAN RUANG DAN WAKTU ORANGUTAN (Pongo pygmaeus pygmaeus Linneaus, 1760) DI HUTAN MENTOKO TAMAN NASIONAL KUTAI, KALIMANTAN TIMUR Santosa, Yanto; Krisdijantoro, Agustinus; Thohari, Machmud; Aulia, Dede
Jurnal Penelitian Hutan dan Konservasi Alam Vol 8, No 2 (2011): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

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Abstract

ABSTRAKPeningkatan kerusakan hutan menyebabkan semakin sempitnya habitat orangutan dan diantara upaya konservasi yang dapat dilakukan adalah pengelolaan habitat yang tersisa berdasarkan aspek ekologi orangutan dan kuantitatifnya. Penelitian ini dilakukan di Mentoko, Taman Nasional Kutai, Kalimantan Timur, meliputi penelitian perilaku orangutan dan analisis vegetasi habitat orangutan. Penelitian bertujuan untuk mengetahui pola penggunaan spasial dan pola penggunaan waktu serta ritme orangutan dalam habitat alami. Hasil penelitian menunjukkan bahwa presentase aktivitas harian orangutan di Mentoko lebih banyak berada pada ketinggian 20-30 meter dari tanah dan rata-rata 44,4% dari seluruh kegiatan mereka dihabiskan untuk aktivitas makan, 39,2% untuk istirahat, 11% aktivitas bergerak, dan 5,4% untuk aktivitas lainnya. Pada kondisi yang ideal tanpa gangguan, penggunaan habitat terkait ketinggian orangutan dalam beraktivitas cenderung bervariasi dari posisi rendah sampai tinggi sesuai posisi sumber pakan. Sebaliknya apabila kondisi tidak aman maka akan beraktivitas pada tempat yang lebih tinggi.  Pilihan ketinggian posisi untuk membuat sarang, selama pengamatan ketinggian rata-rata dalam membuat sarang lebih dari 20 meter dimana sebenarnya pada kondisi tanpa pengamatan, orangutan seringkali membuat sarang pada ketinggian 8-10 meter dari permukaan tanah dalam penggunaan ruang, orangutan melakukan regenerasi antara 0,65-1,11 km adalah habitat yang terdiri dari 51 jenis pohon dengan indeks keanekaragaman jenis 3,75 yang terdiri atas 25 famili, 36 spesies pada tingkat pertumbuhan tiang dari 19 famili dan 39 spesies pada tingkat pertumbuhan anakan dari 22 famili.
PENGGUNAAN PARAMETER MORFOMETRIK UNTUK PENDUGAAN UMUR SIAMANG SUMATERA (Symphalagus syndactylus Raffles, 1821) (Application of Morphometric Parameters to Estimate the Age of Siamang Sumatra (Symphalagus syndactylus Raffles, 1821) Santosa, Yanto; Nopiansyah, fifin; Mustari, Abdul Haris; Rahman, Dede Aulia
Jurnal Penelitian Hutan dan Konservasi Alam Vol 8, No 1 (2011): Jurnal Penelitian Hutan dan Konservasi Alam
Publisher : Pusat Penelitian dan Pengembangan Hutan

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Abstract

Memahami umur satwa merupakan aspek penting untuk mengidentifikasi struktur umurnya. Struktur umur adalah salah satu parameter demografik yang penting untuk dipelajari terkait tujuan pengelolaan populasi. Salah satu teknik estimasi usia dapat didekati dari ukuran organ (morphometric). Penelitian ini dilakukan dari Mei hingga Agustus 2007 pada Pusat Penyelamatan Satwa Cikananga, Jawa Barat dan Kalaweit Pusat, Sumatera Barat. Penelitian ini menggunakan 14 parameter dan 40 sampel dari siamang (Symphalagussyndactylus Raffles, 1821), terdiri dari 24 jantan dan 16 betina. Hasil analisis statistik (regresi linier berganda dengan metode bertahap) korelasi antara umur (Y) dengan lingkar wajah (LM) diperoleh persamaan regresi untuk Umur = -14,546 + 0,801 LM untuk jantan (1-15 tahun), panjang tangan (PTT) dengan Umur = -2,091 + 0,496 PTT untuk jantan (1-6 tahun), lingkar dada (LD) dengan Umur = -15,328 + 0,533 LD untuk betina (2-14 tahun), lingkar dada dengan Umur = -5,331 + 0,312 LD untuk jantan dan betina (1-15 tahun). Ukuran morfologikal dalam hal ini lingkar wajah, panjang tangan, lingkar dada merupakan pertumbuhan panjang hewan yang mudah dilihat dengan mata dan merupakan parameter penentuan kelas umur pada siamang sumatera (Symphalagus syndactylus Raffles, 1821). Parameter morfometrik yangdigunakan merupakan bagian-bagian tubuh yang mudah terlihat dan mudah diukur dan merupakan bagian terpenting dalam sebuah teknik penentuan umur menggunakan metode morfometrik.
DAMPAK PERKEBUNAN KELAPA SAWIT TERHADAP KEANEKARAGAMAN SPESIES TUMBUHAN TROPIKA (STUDI KASUS : PROVINSI RIAU) Nahlunnisa, Hafizah; Santosa, Yanto; Zuhud, Efrizal AM
Wahana Forestra: Jurnal Kehutanan Vol. 12 No. 1 (2017)
Publisher : Fakultas Kehutanan Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/forestra.v12i1.204

Abstract

Oil palm expansion that occurred in Indonesia become the concern today. The expansion of oil palm plantations is a major contribution to the national economy. However oil palm plantations is claimed as the cause of the destruction of primary forests and reduce the diversity of plant species. Therefore, research is needed to explore the history of land cover of oil palm plantations and knowing the divers ity of plant species before and after the oil palm plantations. The study was conducted in March-April 2016 in 6 companies in Riau province. The data collected by the analysis of Landsat imagery to see the condition of land cover prior to their oil palm plantations. In addition, analysis of vegetation in 2-3 plots on land cover before and after the oil palm plantations. The land cover were observed after the oil palm plantations that HCV suspected area as an area that has a high diversity of plant species in oil palm plantations. Analysis of landsat satelite indicated that the history of land cover oil palm plantations is come from secondary forest (19.88%), rubber plantations (59.26%), open land (19.87%), and mixed agriculture (0.99%). The highest diversity of plant that is in HCV which forest areas form . The results showed that the number of plant species was decreased about 60.56-93.33% in the three companies, while the other three companies does not have change the number of plant species. The company did not change the diversity of plant species are those with HCV area in the form of secondary forest that had existed before the oil palm plantations. Thus, there was no history of land cover palm oil from primary forests, and then to the impact of oil palm plantations on plant species diversity was decreased significantly.
Cohabitation Study of the Leaf Monkey and Bornean White-Bearded Gibbons in Gunung Palung National Park, West Kalimantan YANTO SANTOSA; . TAQIUDDIN; ABDUL HARIS MUSTARI; DEDE AULIA RAHMAN
HAYATI Journal of Biosciences Vol. 19 No. 3 (2012): September 2012
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (377.869 KB) | DOI: 10.4308/hjb.19.3.115

Abstract

Diet and habitat overlaps were studied for the leaf monkey (Presbytis rubicunda) and bornean white-bearded gibbons (Hylobates albibarbis) in tropical forest of Cabang Panti Research Station (CPRS), Gunung Palung National Park, West Kalimantan. Systematic data on feeding and ranging behaviour were collected from August 2009 up to February 2010 for the three groups of two sympatric primate species that shared two neighbouring patches. Our results showed that seven types of habitat in CPRS were affected to both primates, particularly in plant utilization for feed and the use of vertical space patterns. If the leaf monkeys were present in the same forest patch, the Bornean white-bearded gibbons showed a reduced within-group dispersal and significantly less foraging time in a given forest patch. This might be due to the bornean white-bearded gibbons were more selective in their diet selection. When fruits were scarce, bornean white-bearded gibbons spent most of their foraging time in many types of forest ecosystem, while leaf monkey foraged within one or two types of forest ecosystem. At this period, diet and habitat overlaps between the two species were low. When the availability of fruits increased, leaf monkeys shifted their foraging range and both species became confined to the forest habitat. Consequently, the overlaps of diets and habitats were increased while the peak was at the end of the fruit season.
The Time Budget of Javan Deer (Rusa timorensis, Blainville 1822) in Panaitan Island, Ujung Kulon National Park, Banten, Indonesia . Pairah; YANTO SANTOSA; LILIK BUDI PRASETYO; ABDUL HARIS MUSTARI
HAYATI Journal of Biosciences Vol. 21 No. 3 (2014): September 2014
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (1308.36 KB) | DOI: 10.4308/hjb.21.3.121

Abstract

Javan deer that exist in Panaitan Island was reintroduced from Peucang Island during 1978-1982. We observed behavior of the reintroduced Javan deer inhabiting Panaitan Island. Javan deer in this island spent most of their diurnal time for feeding. There were no significant differences between all age-sex variation for all activities pattern. The behavior of Javan deer was influenced by age, sex, social group, temperature, and food availability.
Analisis Preferensi Habitat Badak Jawa ( Rhinoceros sondaicus, Desmarest 1822) di Taman Nasional Ujung Kulon U Mamat Rahmat; Yanto Santosa; Agus Priyono Kartono
Jurnal Manajemen Hutan Tropika Vol. 14 No. 3 (2008)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Javan rhinoceros (Rhinoceros sondaicus) is one of the rarest rhinoceros that are still existing today. Their distribution is limited to only a handful of countries including Indonesia, Vietnam, and possibly in Cambodia and Laos. In Indonesia, the species is only found in Ujung Kulon National Park (UKNP). Its population is concentrated in the Ujung Kulon peninsula. Theoretically, large animals have preferences in their habitat and therefore tend to distribute uniformly or clumped. In consequence, the management of javan rhino population and habitat must consider their habitat preference. The objectives of this study were: 1) to identify dominant habitat components that determine the presence of Javan Rhinoceros in UKNP, and 2) to formulate habitat preference typology. The study was carried out in Management Section II area of UKNP, Pandeglang District, Banten Province. Method applied was direct field observation and literature review.  Based on multiple linear regressions, the dominant habitat factors preferred  javan rhino were soil pH (X7) and salinity (X9). The equation formulated was  Y = 6.25 – 1.12 X7 + 3.88 X9.  Using Neu’s method of preferential index analysis, it was revealed that Citadahan, Cibandawoh, Cikeusik and Cigenter had preferential indices greater than 1.  The data shows that javan rhinoceros mostly prefer habitats located 400-600 m from the coast, and areas located 0-400 m was considered as their second preference.
Precision of Nest Method in Estimating Orangutan Population and Determination of Important Ecological Factors for Management of Conservation Forest Yanto Santosa; Dede Aulia Rahman
Jurnal Manajemen Hutan Tropika Vol. 18 No. 1 (2012)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Orangutan as an umbrella species is closely interlinked with sustainable forest management meaning that the protection of this species has implications on the protection of other species and maintain ecosystem stability. The total natural habitat required to support orangutan’s population could only be determined by the appropriate population size. It is associated with the carrying capacity to accommodate or fulfill the habitat requirements of a wildlife population. Selection and delineation of core and wilderness zones as habitat preference should be based on the results of preference test shown by the spatial distribution of orangutan population. Value of the coefficient of variation (CV) was used to observe the precision of the population estimation and to identify important ecological factors in selection of nesting trees. The study resulted in varied CV spatial values for various habitat types: 22.60%, 11.20%, and 13.30% for heath, lowland dipterocarp, and peat swamp forest, respectively. In the other side, CV temporal values for various habitat types were 5.35%, 22.60%, and 17.60% for heath, lowland dipterocarp, and peat swamp forest, respectively. This indicated that the population density in each type of forest ecosystems had a variation based on location and did not varied according to time of survey. The use of nest survey technique showed good reliable results in estimating orangutan population density. Efforts to improve the precision of estimation can be done by formulating r value as the harmonic average of nest production rates and t as the average of nest decay time per nest category. Selection of habitat preference and nest trees were influenced by food availability thus should form important consideration in conducting nest survey to avoid bias in estimating orangutan populations.
Habitat Selection and Activity Pattern of GPS Collared Sumateran Tigers Dolly Priatna; Yanto Santosa; Lilik Budi Prasetyo; Agus Priyono Kartono
Jurnal Manajemen Hutan Tropika Vol. 18 No. 3 (2012)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Although translocation has been used in mitigating human-carnivore conflict for decades, few studies have been conducted on the behavioral ecology of released animals. Such information is necessary in the context of sustainable forest management. In this study we determine the type of land cover used as main habitat and examine the activity pattern of translocated tigers. Between 2008 and 2010 we captured six conflict tigers and translocated them 74-1,350 km from their capture sites in Sumatera. All tigers were fitted with global positioning system (GPS) collars. The collars were set to fix 24-48 location coordinates per day. All translocated tigers showed a preference for a certain habitat type within their new home range, and tended to select the majority of natural land cover type within the landscape as their main habitat, but the availability of natural forest habitat within the landscape remains essensial for their survival. The activity of male translocated tigers differed significantly between the six time intervals of 24 hours, and their most active periods were in the afternoon (14:00-18:00 hours) and in the evening (18:00-22:00 hours). Despite being preliminary, the findings of this study-which was the first such study conducted in Sumatera-highlight the conservation value of tiger translocation and provide valuable information for improving future management of conflict tigers.
Habitat Suitability Modeling of Javan Rhino (Rhinoceros sondaicus Desmarest 1822) Ujung Kulon National Park U Mamat Rahmat; Yanto Santosa; Lilik Budi Prasetyo; Agus Priyono Kartono
Jurnal Manajemen Hutan Tropika Vol. 18 No. 2 (2012)
Publisher : Institut Pertanian Bogor (IPB University)

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Abstract

Javan rhino (Rhinoceros sondaicus Desmarest 1822) is the rarest species among 5 species of rhinos in the world. Its distribution is currently limited only in Ujung Kulon National Park (UKNP), Indonesia. Due to the small population size and its limited distribution, it is listed as critically endangered species in the IUCN Redlist. The main objectives of this research were: 1) to identify the dominant habitat components that determine the presence of javan rhino in UKNP; 2) to analyze habitat suitability of javan rhino (Rhinoceros sondaicus Desmarest 1822) in UKNP using geographical information system; and 3) to examine its habitat condition. Results of the research found eight components identified to be crucial for Javan rhino habitat and appropriate for spatial modelling of habitat suitability, of which four were the most dominant factors influencing the frequency of javan rhino presence. These four dominants factors were slope, distance from wallow sites, distance from rumpang (open area), and distance from beach.
Javan Rhino (Rhinoceros sondaicus Desmarest 1822) Utilization Distribution and Habitat Selection in Ujung Kulon National Park Yanto Santosa; U Mamat Rahmat; Lilik Budi Prasetyo; Agus Priyono Kartono
Jurnal Manajemen Hutan Tropika Vol. 19 No. 1 (2013)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (551.899 KB) | DOI: 10.7226/jtfm.19.1.31-38

Abstract

Javan rhino (Rhinoceros sondaicus Desmarest 1822) is one of world's rarest endangered species (IUCN 2008). Currently, their distribution is limited to Ujung Kulon National Park (UKNP) of Indonesia. Natural disasters, disease, poaching, encroachment, and competition are threats facing Javan rhino's population, hence creating pockets of habitats outside the UKNP was necessary and should be based on scientific studies of javan rhino utilization distribution and habitat selection in UKNP as the natural habitat. The objectives of the study were to determine the utilization distribution of Javan rhino and its habitat characteristics and determine javan rhino habitat selection within UKNP. The research indicated that Javan rhinos highest use of areas comprised of swampy shrub (w = 2.197) and shrub (w = 2.012), relatively open habitat (w = 4.233), flat area (w = 1.313) and slightly sloping areas (w = 1.007), lowland (w = 1.346), close to river (w = 1.087), close to road network (w = 1.395), close to coasts/beaches (w = 1.862), close to wallowing areas (w = 3.709), and close to rumpang (w = 3.783). The results suggested that javan rhino showed selection and preferences for its habitat.
Co-Authors . Delfiandi . Ernikawati . Firmansyah . Muchrodji . Pairah . TAQIUDDIN A. Hernadi ABDUL HARIS MUSTARI Abdul Haris Mustrai Abdul Rosyid Achmad Machmud Thohari Agus Hikmat Agus P. Kartono Agus Priyono K Agus Priyono Kartono Agustinus Krisdijantoro Agustinus Krisdijantoro, Agustinus Ahmad Munawir Ainy Amelya Utami Andoko Hidayat Anita Rianti, Anita Anxious Yoga Perdana Arzyana Sunkar Audelia Thalita Ramadhanti Bahruni . Budi Sampurna Burhanuddin Masy'ud Cory Wulan Dede Aulia DEDE AULIA RAHMAN Dede Aulia, Dede Diah Auliyani Dolly Priatna Dones Rinaldi Dudung Darusman Edhi Sandra Eka Nurmalasari Eko Prastio Ramadhan Elano Ratag Entang Uskandar Erniwati Erniwati Ervizal A. M. Zuhud Ervizal A.M. Zuhud Ervizal AM Zuhud Ervizal AM. Zuhud Eva Rachmawati Fifin Nopiansyah fifin Nopiansyah, fifin Fredy Sitorus Gugum Gumilar Paturohman Hadinata, M. Latif Heru Sugito I Nengah Surati Jaya Ilham Setiawan Noer Intan Purnama Sari Intan Purnamasari Intannia Ekanasty Irma Kusuma Ningrum Iswandi Anas Iwan Hilwan Jojo Ontarjo Julius Paolo Siregar LILIK BUDIPRASETYO M Bismark M. Adlan Ali M. Bismark Machmud Thohari Machmud Thohari Machmud Thohari Marini Machdi Putri Masy’ud, Burhanuddin Moch. Erlan Sodahlan Muhammad Farid Al Faritsi Muhammad Farid Al-Faritsi Nahlunnisa, Hafizah Nandang Prihadi Nelson Andre Nicanor J.V. Siterus Nitibaskara, Unu Nyoto Santoso Pairah Pairah Raden Yosi Zainal Muhammad Rika Sandra Dewi Rina Wulan Sari Rozza Tri Kwatrina Rozza Tri Kwatrina Rozza Tri Kwatrina rozza tri kwatrina, rozza tri Salbiah Hanum Hasibuan Sandi Sopiyandi Setiyawati Titi Siddiq Nurkholis Siti Hasanah Siti Nahla Siti Nurjannah Sitti Ramlah Sugeng Paryadi Supartono Supartono U Mamat Rahmat U Mamat Rahmat Wardi Septiana Yeni A. Mulyani Yohanna Yohanna Yosi Irawan Zuhud, Efrizal AM