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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

Author-ID : 370747

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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Ecological Impacts of Oil-Palm Plantation on Butterfly and Bird Species Diversity Rozza Tri Kwatrina; Yanto Santosa; M Bismark; Nyoto Santoso
Jurnal Manajemen Hutan Tropika Vol. 24 No. 1 (2018)
Publisher : Institut Pertanian Bogor (IPB University)

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The expansion of oil-palm plantations in Indonesia is often blamed as the driving causes of deforestation and impacts on environmental changes including the destructed biodiversity. Our understanding regarding environmental impacts on biodiversity is still limited. We address this issue by examining the diversity of butterfly and bird species under two type habitat conditions in Central Borneo. We calculated the butterfly and bird species number, richness, evenness, similarity, and composition inside the established oil-plantation area comprising four large-scale plantations and seven smallholding plantations, as habitat after plantation establishment. In comparison, we did so similarly inside secondary forest and shrubs, as habitat before oil-palm plantation establishment. Our results revealed that the habitat after plantation establishment exhibited a higher number of butterfly and bird species than the habitat beforehand. However, the richness, evenness, and similarity indices for the species revealed variations, which were affected by dominant species in two habitats. The establishment of oil-palm plantation brought about significant impacts on the composition of species and affected the species similarities between two habitats. The oil-palm plantation landscape and reserved forest vegetation were essential in supporting diversity and ecological role of species on habitat condition after oil-palm plantation establishment.

Independent Smallholder Oil Palm Expansion and Its Impact On Deforestation: Case Study in Kampar District, Riau Province, Indonesia Erniwati Erniwati; Ervizal AM. Zuhud; Iswandi Anas; Arzyana Sunkar; Yanto Santosa
Jurnal Manajemen Hutan Tropika Vol. 23 No. 3 (2017)
Publisher : Institut Pertanian Bogor (IPB University)

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Independent smallholders who manage their own oil palm plantations without receiving technical assistance and agricultural inputs from oil palm estates or government have been increasing rapidly in Indonesia in recent years. However the magnitude of their impacts on tropical forest deforestation remains largely unevaluated. The objective of this study was to explore the history of land use, and the changes in land cover and status since the onset of oil palm plantation activities. The study was conducted from March to April 2016. Surveys were carried out in 30 ha of independent smallholder oil palm in Kampar District, Riau Province. To identify the land status, the Agreed functional forest classification (TGHK) and Provincial land use planning (RTRWP) maps were overlaid on images of the area of independent smallholder oil palm. Landsat images three years before oil palm was established were used to assess forest cover changes. Furthermore, oil palm smallholders and elders of the local community in the research area were interviewed to identify land use prior to oil palm. Our results showed that, based on land status, 47% of the area of independent smallholders’ oil palm derived from logged forest; that is the land changed in status from forest to oil palm plantation. The other 53% of oil palm area derived from non-forested land. The land use history before the establishment of independent smallholder oil palm mostly comprised general-purpose field activities and former forest-felling (forest concessions). The land cover before conversion into oil palm comprised rubber plantation, secondary forest, and shrub cover. From the results of our survey, we conclude that most of the oil palm plantations planted between 1990 and 2002 have their origins not in primary forest, but rather in degraded secondary forest, former fields, and shrub-land. These results imply that conversion of forest area into oil palm plantations is not the direct cause of deforestation in the tropical forests of Kampar, Riau Province.

Pendugaan model pertumbuhan dan bentuk sebaran spasial populasi banteng (Bos sondaicus d'Alton) di taman nasional alas purwo jawa timur Yanto Santosa; Gugum Gumilar Paturohman
Jurnal Ilmu Pertanian Indonesia Vol. 14 No. 3 (2009): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Population of bulls in the world is decreasing to 80%. On Java and Bali, the habitat of the species has declined by about 20% and 30% respectively (IUCN 2003). In Java, especially in Alas Purwo National Park, the decreasing population of bulls is caused by hunting and degradation of habitat. The estimation of growth bulls population in APNP is increase. The size of population in the beginning is 588 individuals the rate of growth is 0.093 and carrying capacity of habitat is 4772 individuals. The population will reach the carrying capacity by the year of 2126. The pattern of spatial distribution of bulls in APNP based on analysis of chi-square test is grouped (l2hit>l220.025). The pattern of distribution in low-land forest and platation forest is randomized (l20.975£l2hit£l20.025), meanwhile it is grouped in coastal forest ecosystem. The pattern of distribution in each type of ecoystem is influenced by the factor of resources (feedings, water, and salty water) and predation factor.

PROSPEK PENGEMBANGAN KEBUN BURU RUSA PERUM PERHUTANI BKPH JONGGOL JAWA BARAT BERDASARKAN TINJAUAN EKOLOGI Yanto Santosa; . Firmansyah
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 1 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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One form of sustainable wildlife utilization with ecological and economic values is game hunting. Due to game hunting’s promising prospects, Perum Perhutani planned to develop their deer captive breeding area (PRJ) into a hunting garden. The objective of this research was to study the prospects of deer captive breeding area of Perum Perhutani BKPH Jonggol, West Java into a hunting garden based on ecological considerations. The research was conducted in 2006. Based on direct observation, interviews with the locals and local officers, and observation of land cover change due to increase in population, it was concluded that Block 9 was the most ideal site for hunting garden due to its varied slopes which was preferred by deers, ideal land coverages such as grassland, shrubs and plantation forest, lack of enclave, abundant grazing area and accessible by the hunters. Based on land topography and land coverage, the most suitable hunting method for Block 9 was stalking. According to the Directorate General of PHPA (1988), the only weapon allowed for game hunting is firearm. Based on calculations and literature reviews, the maximum number of hunters allowed in Block 9 is 108 hunters per year with a hunting season of two months, during July and October. Assuming 100% hunting success with maximum number of hunters allowed, the hunting quota would be 108 deer per year. Further studies are required to determine the number of initial population to be introduced to the hunting area and time to start hunting activities, as well as prospects of PRJ development as hunting garden based on socio-economic considerations.

Pendugaan Parameter Demografi dan Bentuk Sebaran Spasial Biawak Komodo di Pulau Rinca, Taman Nasional Komodo Yanto Santosa; Raden Yosi Zainal Muhammad; Dede Aulia Rahman
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 2 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Komodo is one of the protected rare reptiles that can only be found within the Komodo National Park and the northern island of Flores. This study was aimed to determine the species population parameters and spatial distribution. Data collection on population and spatial distribution of komodo were conducted using 20 transects with four repetitions, of which 5 transects were placed in the deciduous forest and 15 in the savannah with a total sampling area of 200 ha. The form of spatial distribution was obtained using the methods of variance ratio, dispersion index, green index, clumping index and chi-square. In addition, vegetation analysis was carried out on a 4 ha sampling plot. Results of the observations indicated that the size of the komodo population on Rinca Island was 698 individuals with a density of 3.15 individuals/km2 comprised of: adults with 1.7 individuals/km2, sub-adults with 0.65 individuals/km2, juveniles with 0.8 individuals/km2 and infants with 0.4 individuals/km2. The density of komodo in the deciduous forest (8.4 individuals/km2) was much higher than in the savannah (0.64 individuals/km2). The birth rate of komodo (11.27%) was higher than the mortality rate (4.23%). The sex ratio was 3 : 1. Within the study area, komodo distributed within clusters as indicated by the ratio of mean value of 3.77; dispersion index 3.72; green index 0.08, clumping index 2.72 and chi-square 167.059.6. Chance of encounters with Komodo in both types of habitat was much higher in the morning (80%) than during the day (20%). To increase the population size, the manager should intervene with the maintenance of hatchlings to acquire low mortality rate and protection of komodo’s natural prey species.

Faktor–Faktor Penentu Keberhasilan Pelepasliaran Orangutan Sumatera (Pongo Abelii) di Taman Nasional Bukit Tigapuluh Yanto Santosa; Julius Paolo Siregar; Dones Rinaldi; Dede Aulia Rahman
Jurnal Ilmu Pertanian Indonesia Vol. 17 No. 3 (2012): Jurnal Ilmu Pertanian Indonesia
Publisher : Institut Pertanian Bogor

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Study on determinant factors on success of Sumatran orangutan reintroduction was done to all orangutans in reintroduction station (84 individual + 1 infant orangutan). This study was conducted from August to December 2006 in the Station of Orangutan Reintroduction Centre located in Buffer Zone of Bukit Tiga Puluh National Park. The purpose of this study was to measure the effects of determining factors to the success of orangutans reintroduction to their natural habitat and to identify other factors that give impact to the reintroduction success. Data were collected through direct observation of activities and daily behavior of orangutans using scan sampling and continuous recording methods as well as through interviews with officials. Data analysis was performed descriptively and quantitatively using statistical tests (chi–square) with 95% confidence interval. The results showed that there is a match between percentage of success of the reintroduction of the six criteria of reintroduction success. The results of chi–square indicates that determinant factors, such as age class, orangutan life history, treatment and duration of reintroduction stage, are correlated to the success of reintroduction activities.

KAJIAN EKOLOGI POPULASI RUSA SAMBAR (Cervus unicolor) DALAM PENGUSAHAAN TAMAN BURU GUNUNG MASIGIT KAREUMBI (Study on Ecology of Cervus unicolor Population in the Development of Gunung Masigit Kareumbi Hunting Park) Elano Ratag; Yanto Santosa; Agus Priyono K
Media Konservasi Vol 11 No 2 (2006): Media Konservasi
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Theresult of Citra Landsat TM in June 2001 showed that the coverage of land in Gunung Masigit Kareumbi Hunting Park area was changed. The area of protected are production forest have respectively decreased by 29.85% and 5.51%. Meanwhile, the result of vegetation analysis showed that there has been found 87 kinds of vegetation, consisting of 44 kinds of plantation and 43 kinds of the forage. Most (63,64%) of the forage which is food resource of rusa sambar is categorized as Poacea family. Notably, the total biomass productivity of forage is 20.790.6 kg/ha/year.The effective width of area is 6.900.1 ha, while the total of potential grassing of all sp-ecies of forage in Gunung Masigit Kareumbi Hunting Park is 47.394.028.5 kg/year. Carrying capacity of this area is 22.780 individuals. Hunting season is after 4 years of population introduced. The number of individuals introduced to fulfil hunting target is 4.280 of adult, consis of 713 males and 3.567 females.Key words : cervus unicolor, vegetation, carying capacity, hunting target, population

PROSPEK PENGGUNAAN Sarcocystis singaporensis UNTUK PENGENDALIAN BIOLOGIS POPULASI TIKUS SAWAH (Rattus argentiventer) (Prospect of Sarcocystis singaporensis for the Biological Control of Rice Field Rats (Rattus argentiventer) Population) . Muchrodji; Yanto Santosa; Abdul Haris Mustari
Media Konservasi Vol 11 No 2 (2006): Media Konservasi
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Rice field rats are important pests of paddy crop in Indonesia, because many unsuccessful paddy crop attacked by rats. Many rodenticide types are produced, especially chemical rodenticide type the actually effect of unfavourable to environment. Biological rodenticide types (bio rodenticide) are still developed slimmest even still very rare, though bio rodenticide types are environmental friendliness. Bio rodenticide type that developed by PPPG Pertanian is using Sarcocystis singaporensis, that is a specific parasite microorganism type lives in rats body. S. singaporensis reproduces sexually in the intestine of reticulated python (Pyhton reticulatus) and transmitted via faeces (in form of sporocyst) to various rats species (Jaekel, 2001). In rats body, the parasite multiplies inside the cell of blood vessel until it forms cyst in muscle, causing rats become death. This parasite not endanger both for human being and also snake. Dosage of S. singaporensis in killing male and also female rice field rats do not related by the age class of rats. The effect on giving Sarcocystis singaporensis on day of death to female rice field rats do not related by the age class of rats, however day of death of the young male rats has quicker than adult rats.Key words : Sarcocystis singaporensis, rodenticide, biological rodenticide, Rattus argentiventer.

STUDI BIAYA DAN PENDAPATAN PENANGKARAN MONYET EKOR PANJANG (Macaca fascicularis Raffles) DENGAN SISTEM TERBUKA, SEMI TERBUKA DAN TERTUTUP (Expenses and Earnings Study of Breeding of Long Tail Macaque with Open, Semi Open, and Closed Systems) Sugeng Paryadi; Yanto Santosa; Jojo Ontarjo
Media Konservasi Vol 11 No 2 (2006): Media Konservasi
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

The study was conducted to calculate the earning and expenses of three kinds breeding system of long tail macaque i.e open, semi-open and close breeding system, respectively in PT PRESTASI Farma Nusantara, CV New Inquitex Primates Division and CV Wahana Satwa Loka. Discounted cash now analysis for ten years period were used to determine the earning and expenses, using 18% of interest rate. According to NPV, IRR and BCR values for 1000 macaques in captive showed that the earning and expenses were difference between these breeding system, where closed system was higher than the others. Based on product grade, close system was better (level B) than semi-open (level C) and open system (level D).Keyword : Macaca fascicularis, breeding system, expenses, earnings

PENGGUNAAN THIDIAZURON, 2, 4 – D DAN GIBERELLIN DALAM PEMBENTUKAN EMBRIO SOMATIK PULE PANDAK (Rauvolfia serpentina (L.) Benth. ex Kurz) MELALUI KULTUR in vitro Heru Sugito; Yanto Santosa; Edhi Sandra
Media Konservasi Vol 11 No 2 (2006): Media Konservasi
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Rauvolfia serpentina (L.) Benth. ex Kurz, is one of the tropical forest plant species which is exploited as plant medicine and pertained as world rareness. To be able to make balance to storey, level request of Rauvolfia serpentina (L.) Benth. ex Kurz simplisia raw material and saving it from destruction, require to be by activity of conservation, one of the effort by in vitro culture forming of somatic embryo. Somatic embryo by in vitro is forming of embryo from cell is non sexual which is culture. Somatic embryo application beside for the of quickly, also can be yielded by the amount of seed which is not limited its amount, as well as to support program repair of crop. This research to know giving influence and regulator dose grow, consist of 2 attempt. I. Factorial Attempt which use completely randomized experimental disign, what consist of 2 factor, first is thidiazuron concentration which consist of 4 level, that is 0 ppm 2 ppm, 4 ppm, 6 ppm, 8 ppm, second is concentration 2, 4-D which consist of 4 level, that is 0 ppm, 0.5 ppm, 1 ppm, 1.5 ppm, 2 ppm .II. Factorial Attempt which use completely randomized experimental disign, what consist of 2 factor, first is thidiazuron concentration which consist of 4 level, that is 0 ppm, 2 ppm, 4 ppm, 6 ppm, 8 ppm, second is giberellin concentration which consist of 4 level, that is 0 ppm, 0.5 ppm, 1 ppm, 1.5 ppm, 2.0 ppm. Pursuant to manner statistical analysis result is non parametric Kruskal-Wallis to callus score and embryo at 14 day after initiation not there are difference between treatment, but 28 and 42 day after initiation there are difference between treatment. The use thidiatzuron + 2,4-D give, forming of somatic embryo with the best treatment (6 ppm Thidiatzuron + 0,5 ppm 2, 4 D). Growth of embryo happened at age 35 day after initiation. Thidiazuron + giberellin forming of callus only.Key word : Rauvolfia serpentina, thidiazuron, 2,4-D, giberellin, somatic embryo

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 Masyâ€™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

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