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All Journal HAYATI Journal of Biosciences MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Ilmu Pertanian Indonesia MEDIA KONSERVASI Jurnal Primatologi Indonesia Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Jurnal Pusat Inovasi Masyarakat Policy Brief Pertanian, Kelautan, dan Biosains Tropika
DEDE AULIA RAHMAN
Conservation Of Forest And Ecotourism Department, Faculty Of Forestry And Environment, IPB, IPB Campus Dramaga, Bogor, 16680, Indonesia
Agriculture, Biological Sciences & Forestry Earth & Planetary Sciences Economics, Econometrics & Finance Education Environmental Science Medicine & Pharmacology Social Sciences

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Habitat Preference and Suitability Habitat of Cuscus at PT Wijaya Sentosa, Teluk Wondama Regency Firman Arief; Nyoto Santoso; Dede Aulia Rahman
Jurnal Manajemen Hutan Tropika Vol. 28 No. 1 (2022)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.28.1.49

Abstract

Previous studies are most focusing on the species identification and habitat used by cuscus, while habitat changes are the most threats on cuscus. Habitat changes caused by the operation of logging concession such as PT Wijaya Sentosa creates an impact to the habitat selection of cuscus, which is highly dependent on forest cover. Efforts to protect cuscus species in production forests need to be carried out to ensure their sustainability habitat. This study aims to determine habitat preference of cuscus and model the suitability habitat of cuscus. The Neu index calculation is used to measure the level of habitat preference, while the habitat sustainability map is modelled by biotic, abiotic, and human disturbance components into MaxEnt application. Vegetation data is analyzed to describe tree density, tree richness, and strata using of cuscus by SexFI application. The study showed that the most preferred habitat by cuscus is LoA 2018 because LoA 2018 had the most species richness so cuscus might be able to choose their vegetation food. The habitat suitability of cuscus in PT Wijaya Sentosa covers 21,116.59 ha and didn't follow the pattern of increasing Et+ logging but was strongly influenced by logged blocks as much as 55.2% contribution.
Okupansi Mamalia Besar Pada Kegiatan Pembangkit Listrik Tenaga Panas Bumi Bakhtiar Aji; Mirza Dikari Kusrini; Dede Aulia Rahman
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 12 No 2 (2022): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.12.2.317-329

Abstract

PLTP merupakan sumber energi terbarukan alternatif untuk mencukupi kebutuhan energi yang meningkat. Potensi sumber energi ini sebagian besar berada di ekosistem hutan & memberikan dampak ekologi. PT Supreme Energi Rantau Dedap (SERD) adalah salah satu pengembang PLTP pada Hutan Lindung Bukit Jambul Gunung Patah, Sumatera Selatan. Untuk tujuan kajian kekayaan spesies mamalia besar dan okupansinya, penelitian ini menggunakan data pemantauan kamera perangkap milik SERD yang dipasang selama tahap eksplorasi dan konstruksi. Data kemudia dianalisa menggunakan pemodelan okupansi single season dengan parameter dampak perubahan habitat (distance), cahaya malam (light), dan perbedaan tipe habitat hutan berdasarkan ketinggian (elevation). Total 13 dari 14 mamalia besar terekam oleh kamera perangkap dan satu melalu laporan pertemuan langsung. Sebagian besar model okupansi terbaik adalah dengan kovariat konstan. Hog badger dan Muntjak merupakan mamalia besar yang konsisten dengan okupansi tinggi antara okupansi naif dan hasil model. Empat spesies mamalia yang tingkat okupansi dipengaruhi dampak kegiatan PLTP yaitu Surili, Babi Hutan, Tapir dan Hog badger. Hasil ini menggambarkan bahwa, pada rentang tahap pengembangan, mamalia besar masih menggunakan habitat di wilayah pengembangan PLTP meskipun beberapa spesies memberikan respons negatif terhadap dampak yang ditimbulkan. Sedangkan pada tahap konstruksi, kekayaan spesies cenderung lebih tinggi namun dengan tingkat deteksi lebih rendah dan tingkat okupansi beragam untuk tiap spesies mamalia besar.
Pendugaan Kehilangan dan Perolehan Komposisi Jenis Mamalia sebagai Dampak Perubahan Tutupan Lahan menjadi Perkebunan Kelapa Sawit Muhammad Farid Al-Faritsi; Yanto Santosa; Dede Aulia Rahman
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 12 No 2 (2022): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Graduate School Bogor Agricultural University (SPs IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.12.2.290-300

Abstract

Beberapa penelitian sebelumnya menyebutkan bahwa perubahan tutupan lahan menjadi perkebunan kelapa sawit menyebabkan kehilangan jenis satwaliar, salah satunya dari kelompok mamalia. Oleh karena itu, diperlukan data mengenai bagaimana besarnya kehilangan jenis tersebut. Penelitian ini menduga besaran kehilangan dan perolehan jenis mamalia akibat adanya pembangunan perkebunan kelapa sawit. Data diambil dengan pengamatan langsung (metode strip transect) secara paralel di perkebunan kelapa sawit PT. Rambang Agro Jaya, Sumatera Selatan. Penelitian ini dilakukan pada tutupan lahan antara sebelum (semak belukar) dan setelah adanya perkebunan kelapa sawit. Hasil penelitian ini menunjukkan bahwa perubahan dari semak belukar menjadi perkebunan kelapa sawit tidak mengubah jumlah jenis mamalia, namun meningkatkan indeks kekayaan jenis dan menurunkan indeks kekayaan jenisnya. Indeks kesamaan jenis antara semak belukar dan perkebunan kelapa sawit adalah 0,56. Pembangunan perkebunan kelapa sawit juga menyebabkan kehilangan dan perolehan jenis mamalia dengan persentase yang sama, yaitu 67%. Keberadaan mamalia setelah adanya perkebunan kelapa sawit diduga disebabkan karena ketersediaan pakannya.
ECONOMIC VALUATION OF THE MOLUCCAN ECLECTUS BASED ON MARKET PRICE AND MAINTENANCE COST APPROACH Ilham Setiawan Noer; Yanto Santosa; Dede Aulia Rahman
Media Konservasi Vol 27 No 2 (2022): Media Konservasi Vol 27 No 2 Agustus 2022
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.27.2.27-33

Abstract

Illegal wildlife trade is a criminal act of enormous value, almost equivalent to drug trafficking. One species vulnerable to being traded illegally is the moluccan eclectus which has a high number of enthusiasts. Law enforcement in cases of illegal wildlife trade in Indonesia is difficult because there is no standardization in calculating the economic value of wild animals. The economic valuation approach is one approach in quantifying the economic value of wildlife. This study aims to analyze the economic value of moluccan eclectus based on the market price approach, analyze the economic value of moluccan eclectus based on the maintenance cost approach, and compare the two approaches in the economic valuation of moluccan eclectus. Data were collected by two methods, namely literature study and interviews. The literature study collects data in the form of moluccan eclectus market prices circulating in the domestic and international markets. Meanwhile, interviews were conducted with managers of conservation institutions at Siantar Zoo, Medan Zoo, Tasikoki Animal Rescue Center (PPS) Manado, Taman Mini Indonesia Indah Bird Park in Jakarta, Kekewang Zoo in North Sulawesi, and Andy Hoo Captivity in East Java to obtain data on maintenance cost. Data analysis was carried out quantitatively and qualitatively. The results showed that the economic value of moluccan eclectus based on the market price approach reached IDR 16,138,820/individual. Meanwhile, based on the maintenance cost approach, the economic value of moluccan eclectus reaches IDR 6,313,333/individual. Based on the accuracy of the results, both approaches have the same level of accuracy. Meanwhile, based on the effectiveness and cost-efficient aspects of data collection and analysis, the market price approach is relatively better than the maintenance cost approach. Key words: Economic valuation, illegal wildlife trade, moluccan eclectus
Population Monitoring of Javan Leopard and Javan Gibbon in Potential Areas in Mount Halimun Salak National Park Trisna Rizky Martiyani Ina; Dede Aulia Rahman; Yudi Setiawan; Satria Giri
Media Konservasi Vol 27 No 3 (2022): Media Konservasi Vol 27 No 3 December 2022
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.27.3.128-139

Abstract

Mount Halimun Salak National Park (MHSNP) is one of tropical forest area in West Java which has the potential for a high diversity of flora and fauna species. One of them is an important habitat for the Javan leopard and Javan gibbon. This study aims to analyze the population density of the Javan leopard and Javan gibbon. Based on the result of this study information on the population condition of the Javan leopard and Javan gibbon in MHSNP. The data collection was conducted in February – April 2021 in Cikaniki area, Citalahab, corridor, and MHSNP Star Energy by installing camera traps and line transect method. The results of the camera trap installation could detected 12 types of mammals and 5 species of birds. There are four Javan leopard identified in this study with a sex ratio of 3 males and 1 famale (3:1) and only had one age class (adult). The estimated density of the Javan leopard by SECR is 11,19 ind/100km2. There were at least 11 javan leopards in an area 100 km2. The population density of javan gibbon in Cikaniki is 26,67 ind/km2, Citalahab is 16,67 ind/km2, and Star Energy is 8,33 ind/km2.
Thermal Drone Technology Used to Capture Thermoregulation in Wild Sumatran Elephants Raden Danang Wijayanto; Aryo Adhi Condro; Dede Aulia Rahman
HAYATI Journal of Biosciences Vol. 30 No. 6 (2023): November 2023
Publisher : Bogor Agricultural University, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.4308/hjb.30.6.1061-1070

Abstract

Drone technology plays a critical role in supporting conservation efforts for endangered species, not only in terms of species monitoring within various landscapes, but also potentially when applied to behavioral studies to investigate interaction patterns and response to environmental change. We tested a thermal drone to investigate thermoregulation and surface temperature of wild Sumatran elephants in the lowland tropical forest of Jambi, Indonesia. Thermoregulation data was obtained using RGB images and videos, while temperature values were measured from thermal images (R-JPEG) extracted into TIFF equipped with pixel temperature. We detected a visual thermoregulation mechanism known as mud bathing. Our study demonstrated that the trunk functions to draw mud and throw it onto the head, back, and stomach, the tail functions to distribute the mud to all parts of the back of the body, while the ears flapped to keep head temperature cool. Our measurements showed that the surface temperature of Sumatran elephants is between 28.9-30.3°C. The head had a relatively lower temperature than other body parts. This study also revealed that the environmental humidity variable significantly affects the elephant's temperature rise. The use of drone technology for future behavioral studies is recommended as it accurately provides high quality data and can be widely used in any type of terrain.
Habitat Suitability Modeling of Javan Slow Loris (Nycticebus javanicus) in the Forest Cluster of Gunung Halimun Salak Giri, Misbah Satria; Munawir, Ahmad; Sundawiati, Atih; Sodahlan, Mohammad Erlan; Prasetyo, Yogi; Nugrahareni, Hermita Widi; Kurniawan, Henri; Rinekso, Albert Joni; Rahman, Dede Aulia
Jurnal Manajemen Hutan Tropika Vol. 29 No. 2 (2023)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.29.2.119

Abstract

Javan slow loris (Nycticebus javanicus) is one of the endemic wildlife on Java Island. This species owns particular characteristics, including arboreal, solitary, and nocturnal natures. The species is threatened due to habitat loss and illegal trafficking. Nevertheless, their current geographic distribution remains unclear and environmental factors impact on these species is mostly unknown. This study aims to predict the habitat suitability of javan slow loris in the Conservation Management Forest Unit area of Mount Halimun Salak Forest Group. The study employs a species distribution modeling approach using Maximum Entropy. The presence data of javan slow loris was collected from the radio-telemetry devices used in post-release monitoring. The modeling utilizes elevations, distance from the settlements, slopes, and land covered as its environment variables. The result shows that 52% of the study areas, or 54,669 ha are suitable as the habitat of N. javanicus. Since as the largest protected area on Java Island, Gunung Halimun Salak National Park is one of the natural habitats that are pivotal for this species. This study provides essential documentation for developing management strategies within protected areas. Hence, the result of the study could serve as one of the factors in the determination of animal release location in the future.
Identifying Important Areas for the Release of Five Endemic Species in a Mountainous Landscape: Inference from Spatial Modeling Techniques Rahman, Dede Aulia; Giri, Misbah Satria; Munawir, Ahmad; Sunderland-Groves, Jacqueline L
Jurnal Manajemen Hutan Tropika Vol. 30 No. 1 (2024)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.30.1.51

Abstract

Efforts to release animals resulting from evacuation and rehabilitation into their natural habitats are important practices in wildlife conservation. Before releasing the animals, it is important to assess the habitat suitability of the areas to support the existence of the animals in the long run. Yet, there is limited study of habitat suitability assessment on national parks as release locations for wild animals. This study aimed to assess the suitable habitat of five charismatic animal species, i.e., Panthera pardus melas, Hylobates moloch, Prinonailurus bengalensis, Nycticebus javanicus, and Nisaetus bartelsi, in Gunung Halimun Salak National Park using Maxent, and to determine potential locations for releasing animal’s species. Models for the P. p. melas show 47,619 ha and 21,391 ha, respectively, suitable as habitat and potential release location, for H. moloch, each is 57,537 ha and 33,471 ha, for P. bengalensis, each is 25,460 ha and 17.189 ha, for N. javanicus, each is 29,848 ha and 15,578 ha, and for N. bartelsi, each is 44,426 ha and 25,660 ha. Our study shows that a suitable habitat can be critical in choosing a wildlife release site. Further consideration of conflict mitigation and practicalities is required to achieve the long-term existence of released species.
Diversity and colonization of butterfly (Lepidoptera) on Pasoso Island, Central Sulawesi Fauziah ramadhana; Masy'ud, Burhanuddin; Rahman, Dede Aulia
Media Konservasi Vol. 28 No. 3 (2023): Media Konservasi Vol 28 No 3 December 2023
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.28.3.305-315

Abstract

Various biotic and abiotic environmental factors influence the preservation of butterfly species in an area. The pressure and threat of extinction for butterflies that occupy relatively narrow and isolated habitats such as small islands are pretty large. This study aims to estimate the diversity of butterfly species, predict colonization, predict local extinction of butterflies, and conservation implications to minimize local extinction of butterflies in the habitat type on Pasoso Island, Central Sulawesi Province. Data was collected using field observations in four land cover types (primary forest, gardens, “ecoton” between garden-primary forests, and shrubs) on a 100 m line transect line. Each line transect is divided into point counts, with a distance between points of 100 m. The results of the identification of butterfly species in four habitat types on Pasoso Island found 16 species from 78 individual butterflies belonging to four families (Nymphalidae, Papilionidae, Pieridae, and Lycaenidae). Butterflies in all habitat types on Pasoso Island are in the moderate category. Species diversity in garden habitat types based on the analysis of the Shannon-Wiener index showed higher than other habitat types (H'=1.89), while the Ecoton habitat type has the lowest diversity value (H'=1.06). The results of the t-test showed that there was no significant difference in the diversity of butterfly species in the four habitats. The results showed that colonization and local extinction occurred in butterfly species on Pasoso Island. Four of the nine species are included in the extinct category, namely Apias albina, Family Lycaenidae, Ideopsis juventa, Phalanta alcippe celebensis Wallacea. Five other species were colonized, namely Arhopala araxes, Catochrysops strabo, Catopsilia pomona, Hypolimnas anomala, and Idea blanchardii.
The Estimation of Cuscus Population and Distribution in Teluk Wondama District, West Papua Province, Indonesia Felayati, Nela Resta; Santoso, Nyoto; Rahman, Dede Aulia
Media Konservasi Vol. 29 No. 1 (2024): Media Konservasi Vol 29 No 1 January 2024
Publisher : Department of Forest Resources Conservation and Ecotourism - IPB University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/medkon.29.1.37-48

Abstract

Cuscus is a marsupial mammal endemic to the eastern part of Indonesia. Populations and their habitats are under pressure due to economic development, population growth and utilization of forest resources. So far, studies on cuscus ecology have mainly focused on protected habitats or conservation areas, this study aims to identify and analyze populations and predict the distribution of cuscus in non-protectes area which is PT Wijaya Sentosa. This research conduct in November 2020 until January 2021 in several land cover categories. The methods used in this study include literature and secondary data studies, field observations using strip-transect and camera trap techniques, interviews using purposive sampling techniques. This study found nine individuals of cuscus from direct observation with strip-transects and two individuals of cuscus from camera trapping. The ground cuscus population (P. gymnotis) had the highest abundance and density, while the common spotted cuscus (S. maculatus) population owned the lowest values. The population structure dominates by male sex and adult age class, and no female sex and young age class were found. Cuscus was more commonly found solitary in the line of observation and not found in every line. The shape of the distribution pattern of the cuscus population at PT Wijaya Sentosa is cluster/aggregated, determined from the value of the dispersion index and the ratio of variance to mean. The most common ground cuscus was found in the 2018 and the 2013 logging area (LOA).
Co-Authors . TAQIUDDIN ABDUL HARIS MUSTARI Aprillyasari, Wulan Mayang Aryo Adhi Condro Arzyana Sunkar Asep Yayus Firdaus Atih Sundawiati, Atih Azizah, Lutfia Bakhtiar Aji Bakti Mandala Bashori, Sayid Akmal Dones Rinaldi Eko Prastio Ramadhan Elfrida Ratnawati Ervizal AMZU Fauziah Ramadhana Febriyana, Aliyyah Zulfa Felayati, Nela Resta Fifin Nopiansyah fifin Nopiansyah, fifin Firman Arief Ghimar, Migo Fannan Giri, Misbah Satria Hendra Gunawan Ilham Setiawan Noer Ilham Setiawan Noer Ilham, Yopin Okta Julius Paolo Siregar Kurniawan, Henri Kusuma, Bita Padma Masy'ud, Burhanuddin Maulahila, Haikal Idris Mirza Dikari Kusrini Mochamad Syamsudin Muhammad Farid Al-Faritsi Nasution, Siti Noor Haliza Nugrahareni, Hermita Widi Nyoto Santoso Pamungkas, Pandu Jati Puji Rianti Raden Danang Wijayanto Raden Yosi Zainal Muhammad Riki Herliansyah Rinekso, Albert Joni Samih, Sulthan Falah Satria Giri Sodahlan, Mohammad Erlan Sunderland-Groves, Jacqueline L Trisna Rizky Martiyani Ina Triwahyudi, Fajar Rizki Ujang Mamat Rahmat YANTO SANTOSA yogi prasetyo Yudi Setiawan Yudi Setiawan