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All Journal MANAJEMEN HUTAN TROPIKA Journal of Tropical Forest Management Jurnal Silvikultur Tropika (JST) MEDIA KONSERVASI JURNAL HUTAN LESTARI BIOTROPIA - The Southeast Asian Journal of Tropical Biology Jurnal Penelitian Hutan dan Konservasi Alam Jurnal Penelitian Hutan Tanaman JURNAL ANALISIS KEBIJAKAN KEHUTANAN Century: Journal of Chinese Language, Literature and Culture Journal of Degraded and Mining Lands Management Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Journal of Tropical Biodiversity and Biotechnology Jurnal Hutan dan Masyarakat Jurnal Penelitian Pendidikan IPA (JPPIPA) Jurnal Belantara Gorontalo Journal of Forestry Research BHUMI: Jurnal Agraria dan Pertanahan Jurnal Risalah Kebijakan Pertanian dan Lingkungan COJ (Coastal and Ocean Journal) JURNAL HUTAN TROPIS Jurnal Ilmu Kehutanan Policy Brief Pertanian, Kelautan, dan Biosains Tropika
Nyoto Santoso
Department Of Forest Resources Conservation And Ecoturism, Faculty Of Forestry, IPB University
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 Environmental Science Immunology & microbiology Languange, Linguistic, Communication & Media Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences Veterinary

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Sentarum langurs (Presbytis chrysomelas) demographic parameters in Sepandan Resort Area of Sentarum Lake National Park samsul, samsul; Samsul; Santoso, Nyoto; Mas’yud, Burhanuddin
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 13 No 3 (2023): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.13.3.454-461

Abstract

Lutung Sentarum (Presbytis Chrysomelas spp cruciger) is a member of the Presbyis tribe. Langur Sentarum (Presbytis Chrysomelas Cruciger) is one of the endemic animals in West Kalimantan with unprotected status, but is vulnerable to extinction. The study was conducted to obtain data on the demographic parameters of animal populations and their management in the Sepandan Resort area. The research was conducted through field observations to obtain data on demographic parameters with the concentration count method based on consideration of the characteristics of species distribution and field conditions in the research area. Population size data collection was carried out at 15 observation points, which were spread across all habitats types in the research study area. Observations or population size calculations at one point were carried out three times, namely in the morning (06.00 – 08.00), afternoon (12.00 – 14.00) and afternoon (16.00 – 18.00), and three replicates were carried out. The results of data from Lutung sentarum at the Sepandan resort found 8 groups from 2 areas, namely in Pelaik hamlet 2 groups and in Kedungkang hamlet 6 groups. Each group relatively had 1 adult male. Total individuals found were 58 individuals consisting of: 8 adult males, 25 adult females, 5 juvenile males, 18 juvenile females and 2 chicks. The total number of adult males and juveniles is 13 individuals and the total number of females is 43 individuals. The results in the sex ratio calculation of the encounter of 8 groups consisting of 13 males and 43 females were composed of sex ratio values of 1: 3. Total natality value of 8 groups of langur sentarum is 0.08.
Analysis of Mangrove Forest Management in Teluk Lembar, West Lombok, Indonesia Salahuddin, Muhammad Al’Awali; Santoso, Nyoto; Hermawan, Rachmad
Jurnal Penelitian Pendidikan IPA Vol 10 No 10 (2024): October
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v10i10.9485

Abstract

Mangrove forests in Teluk Lembar, West Lombok, have an important role in ecological balance and socio-economic benefits. However, these ecosystems face pressure from land conversion for ponds, illegal logging, and pollution. This study aims to describe the condition of mangroves, analyze the socio-economic aspects of the community and the role of stakeholders, assess the value of direct benefits of mangroves, and formulate sustainable management strategies. The results showed significant biodiversity, with 14 species of mangroves and 53 species of fauna, including 44 species of birds. The bird ecological index showed diversity (H') 32, uniformity (E) 0.8, and dominance (D) 0.7, which signified ecosystem stability. However, a serious threat comes from the conversion of land for ponds, houses, factories, and ports. Of the 1703.19 ha of the total area area, only 179.44 ha (10.54%) of mangrove forests remain. Waste pollution, such as mercury and copper levels that exceed the limit, also negatively impacts the ecosystem. Based on the SWOT analysis, the proposed mangrove management strategy includes: (a) strengthening community capacity in mangrove management through training and education, (b) increasing collaboration between stakeholders to strengthen regulation and law enforcement, (c) optimizing economic benefits through the development of mangrove-based ecotourism, and (d) implementing sustainable management practices to maintain a balance between conservation and utilization
Unlocking the Private Sector Role in Supporting the Sustainable Multipurpose Forest Management in  Riau, Indonesia Rossita, Annuri; Nurrochmat, Dodik Ridho; Boer, Rizaldi; Santoso, Nyoto; Jaya, I Nengah Surati; Purwawangsa, Handian; Ekayani, Meti; Mutaqin, Faizal; Kautsyar, Muhammad Irsyad
Jurnal Manajemen Hutan Tropika Vol. 32 No. 1 (2026)
Publisher : Institut Pertanian Bogor (IPB University)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.7226/jtfm.32.1.73

Abstract

This study aims to discover the private sector’s perspective on the sustainable transition of degraded forestlands, including the transformation of oil palm plantations in forest areas into multipurpose forests, identify current barriers in adopting sustainable multipurpose forest management practices on financing and policy aspects, and explore how the private sector can step up its role in forestland restoration. This study was based on field observations, key informant interviews, focus group discussions (FGDs), and literature reviews. This study aims to navigate a path for policy implementation toward decarbonization, as tenurial conflicts, particularly between oil palm plantations and forest areas, are critical for sustainable forest management in Riau. The private sector's interest in sustainable multipurpose forest management is higher when additional benefits from non-timber forest products (NTFPs) are high. This study also found that the private sector’s desire to support sustainable multipurpose forest management stems from the potential benefits of carbon trading. Regarding the carbon market, most respondents are willing to join when  carbon prices are USD4–6 ton-1 of CO2e. It indicates that the private sector is willing to support the domestic carbon market as regulated under the Minister of Environment and Forestry Regulation 21/2022. While the private sector has complied with most transformative policies and mechanisms, respondents expect further incentives and support, particularly to resolve the forestland conflict.
PRELIMINARY STUDY: FEEDING ECOLOGY AND DAILY ACTIVITY OF THREE COLORED LANGUR (Presbytis chrysomelas ssp cruciger Thomas, 1892) IN DANAU SENTARUM NATIONAL PARK Santoso, Nyoto; Sutopo; Meo, Lorenzo Elton; Fauziah, Natasya Nurul; Diva, Alfatheya Margwita
BIOTROPIA Vol. 30 No. 2 (2023): BIOTROPIA Vol. 30 No. 2 August 2023
Publisher : SEAMEO BIOTROP

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11598/btb.2023.30.2.1850

Abstract

Three colored langur (Presbytis chrysomelas ssp cruciger Thomas, 1892) is a primate that has been recognized as a critically endangered species in accordance with the International Union for Conservation of Nature, however still not protected and lacks substantial information about the bio-ecology of their natural habitat. The habitat plays a determining factor not only in space utilization but also the daily activities of the three colored langurs (P c cruciger). The aim of this preliminary study is to collect information regarding their habitat characteristic, feed species, daily activity, and canopy stratum utilization. This research was conducted between July and August of 2021 at Bukit Semujan, Lupak Mawang Resort, Danau Sentarum National Park. The method implemented was to collect the habitat characteristic by plot samples, and their daily activity data by scan sampling with consecutive recording. The study demonstrated that langur inhabited both primary as well as mixed forests (swamp, cultivation land, and secondary forest). There were 27 species as feeds of langurs and the most preferred types of feed are Gita susu (Willughbeia coriacea), Merepat (unidentified), and Karet (Hevea brasiliensis). The most preferred feed compositions consisted of leaves (50%), fruits (30%), and seeds (20%). The most frequently utilized stratum for activities was stratum C (70,49%) and B (27.87%). The highest daily activities were categorized into three parts of time, the morning was dominated by social (44,26%), the afternoon was dominated by rest (59,7 7%), and the evening was dominated by social (73,68%). The highest social activities shown by three colored langurs were agonistic (48,48%), followed by vocalization (39,39%), playing (10,61%), exploring (1,52%), and sexual (0%).
Key Drivers of Mangrove Rehabilitation Success in Ujungalang Village, Indonesia: A MICMAC-Based Stakeholder Analysis Laode Abdul Muluk Faathir; Nyoto Santoso; Eka Intan Kumala Putri
Jurnal Penelitian Pendidikan IPA Vol 11 No 8 (2025): August
Publisher : Postgraduate, University of Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jppipa.v11i8.11581

Abstract

Mangrove ecosystems face severe threats in Indonesia due to anthropogenic pressures and weak governance. This study analyzes factors influencing mangrove rehabilitation success in Ujungalang Village, Cilacap Regency, using MICMAC (Matrix of Cross Impact Multiplications Applied to Classification) method. Through interviews with six key stakeholders, ten variables were identified across biophysical, socio-economic, and institutional dimensions. MICMAC analysis revealed government policy, local institutional support, and external institutional engagement as driving variables, while community participation functioned as a crucial relay variable. The findings emphasize policy coherence, institutional capacity building, and sustained community engagement in creating improvement cycles. This research provides the first comprehensive MICMAC-based framework for understanding rehabilitation dynamics in Indonesian coastal contexts, with practical implications for policy integration and strengthening local governance structures.
Assessment of Mangrove Distribution, Carbon Stock, and Carbon Sequestration toward Sustainable Coastal Management in Northern Coastal of Subang Regency, Indonesia Santoso, Nyoto; Asy’Ari, Rahmat; Ulfa, Aulia; Rachmatullah, Adam; Octovianus; Ramadhan, Yusuf
Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (Journal of Natural Resources and Environmental Management) Vol 16 No 2 (2026): Jurnal Pengelolaan Sumberdaya Alam dan Lingkungan (JPSL)
Publisher : Pusat Penelitian Lingkungan Hidup, IPB (PPLH-IPB) dan Program Studi Pengelolaan Sumberdaya Alam dan Lingkungan, IPB (PS. PSL, SPs. IPB)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29244/jpsl.16.2.136

Abstract

Mangrove ecosystems play a crucial role in climate change mitigation through carbon sequestration; however, increasing anthropogenic pressures threaten their function as carbon sinks. Along the northern coast of Subang, Indonesia, information on mangrove carbon stocks remains limited despite its importance for sustainable coastal management. This study assesses mangrove distribution and estimates carbon stocks and CO₂ sequestration potential using Sentinel-2 MultiSpectral Instrument (MSI) remote sensing data. The research was conducted over a period of 5 months, from the midle of June to November 2025. The results show that mangrove density averaged 8,067 ± 5,332 trees ha⁻¹, dominated by Avicennia marina (69%). Estimated carbon stocks reached 183.73 ± 97.04 Mg C ha⁻¹, comprising 130.11 ± 70.36 Mg C ha⁻¹ of aboveground carbon and 53.62 ± 26.95 Mg C ha⁻¹ of belowground carbon. Across 2,684 ha, total carbon storage was estimated at 268,577 Mg C, equivalent to a CO₂ sequestration potential of 984,782 Mg CO₂e. The Support Vector Machine (SVM) Linear model achieved the highest prediction accuracy (R² = 0.86; RMSE = 0.07; MAE = 0.06). These findings highlight the significant contribution of Subang’s mangroves to climate change mitigation and provide essential data to support sustainable coastal management and Indonesia’s FOLU Net Sink 2030 target.
Co-Authors Achmad Fahrudin Adam Rachmatullah Agus Priyono Kartono Agusrinal Akhmad Fauzi Andri Ginting Ani Mardiastuti Arif Prasetyo Arif Prasetyo Arini, Wahyuningyan Asy’Ari, Rahmat Bambang Sulistyantara Bramasto Nugroho Bunga Resa Hartati, Bunga Resa Hartati Cecep Kusmana DEDE AULIA RAHMAN Dede Setiadi Dedi Sudarma Dimas Aryo Wicaksono Diva, Alfatheya Margwita Dodik Ridho Nurrochmat Dudung Darusman Dudung Darusman Efiyati, Efiyati Ega putra, Rizki Akbar Eka Intan Kumala Putri Entang Iskandar Erianto Erianto Fauziah, Natasya Nurul Felayati, Nela Resta Fifi Gus Dwiyanti Firman Arief Gilang Prastya Pambudi Gunardi Hamdani Hakim Hadi S Alikodra Handian Purwawangsa Handini Widiyanti Hari Prayogo Hariyadi Hariyadi Harnios Arief Hefni Effendi Herlina Darwati Hermansyah Putra Hermawan, Rachmad I Nengah Surati Jaya IBNUL QAYIM Iis Diatin IPB, BPKB Irsandi, Ricky Rizki ISKANDAR ZULKARNAEN SIREGAR Jani Master JARWADI BUDI HERNOWO Kartodihardjo, Hariadi Kautsyar, Muhammad Irsyad Kuo, Chun – I Laode Abdul Muluk Faathir Leo Irwan Sugianto LILIK BUDIPRASETYO Luthfia Zahra Zen M Bismark M Bismark M. Asyief Khasan Budiman M. Bismark M. Bismark Mas’yud, Burhanuddin Maya Ambinari Meo, Lorenzo Elton Meti Ekayani Muhammad Elfaza Faishal Musyaffa Muhsimin . Mutaqin, Faizal Nabilah, Rizka Nova Ika Rakhmawati Sumartono Novida, Rika Nurida, Nurida Octovianus OK Hasnanda Ok Hasnanda OK Hasnanda Syahputra Oktania Kusuma Handayani Perdhana, Reza Dwiputra Pradityo, Teguh Putra, Heriansyah Ramadhan, Yusuf Restian Alif Junianti Ricardo Andalas RIKA RAFFIUDIN Rina Mardiana Rinekso Soekmadi Rinekso Sukmadi Rizaldi Boer Rizki Praba Nugraha Rohma Alif Wibisono Rossita, Annuri Rozza Tri Kwatrina Ruskhanidar Ruskhanidar Salahuddin, Muhammad Al’Awali Salsabila, Religiana Sambas Basuni Samsul Samsul Samsul Sari, Devi Nur Indah SISI SUSILAWATI SUSILAWATI Sitti Ramlah Sri Supraptini Mansjoer Suliyani, Suliyani SUTOPO Sutopo - - Sutopo . Sutopo Sutopo Syamsuddin, Nurmujahidah Tatang Mitra Setia Tilman, Efrem Tri Puji Astuti Tutut Sunarminto Ulfa, Aulia Utami, Anisa Dwi Vregat Febriansyah Danarta WINDRA PRIAWANDIPUTRA, WINDRA Wiwik Handayani YANTO SANTOSA Yasri Syarifatul Aini Yeni A Mulyani Yoga Yuniadi Yoppie Christian Zuhud, Ervizal A. M.