2021 - now as Research Scientist National Research and Innovation Agency of Republic Indonesia (BRIN)
2017 - 2021 as Research Scientist Indonesian Institute of Sciences (LIPI) Jakarta, Indonesia
EDUCATION
1. Master Degree of Forestry Science Program - Forestry Faculty - Universitas Gadjah Mada (2021 - 2023)
2. Bachelor Degree of Cartography & Remote Sensing - Geography Faculty - Universitas Gadjah Mada (2006-2011)
RESEARCH, TEACHING, or OTHER INTERESTS
Forestry, Ecology, Ecological Modeling, Nature and Landscape Conservation
FUTURE PROJECTS
Spatial model species vegetation ecology
Applications Invited
29
Scopus Publications
263
Scholar Citations
10
Scholar h-index
10
Scholar i10-index
Scopus Publications
Population Assessment, Updated Description, and Prediction of Habitat Distribution for the Sumatran Endemic Tree Magnolia calophylloides (Magnoliaceae) Dipta Sumeru Rinandio, Rajif Iryadi, Zulfan Arico, Enggal Primananda, Wendy A. Mustaqim, et al. Tropical Conservation Science, 2026 Background and Background Aim: Magnolia calophylloides Figlar & Noot. is a narrowly endemic Indonesian species, currently listed as Data Deficient on the IUCN Red List. Originally described from Mount Kerinci in 1914, it was last recorded in the wild in 1972. This study aimed to update knowledge on its distribution, population size and structure, habitat preferences, threats, and conservation status. Methods: Field surveys were conducted at historical sites on Mount Kerinci and Mount Tujuh, and a previously unsurveyed area, Ladeh Panjang, in Jambi Province. We assessed population metrics, habitat characteristics, and threats, and updated the species’ taxonomic description based on live observations. Species distribution modeling was used to predict potential habitat suitability. Results: A total of 389 individuals were recorded across the three sites, with 316 (81%) mature. Flowering and fruiting individuals enabled the first photographic documentation of fresh flowers and revision of its morphological description. The primary threats observed were logging and forest conversion to agriculture. Based on population size, extent of occurrence (97.79 km 2 ), and area of occupancy (32 km 2 ), we recommend reclassifying M. calophylloides as Endangered under IUCN criteria B1ab+B2ab(i,ii,iii,v); C2a(i). Conclusions: M. calophylloides is confirmed as a montane forest specialist with a highly restricted elevational range (1,861–2,322 m) and very limited distribution in Sumatra. Its small population and continued habitat loss highlight the species’ vulnerability. Implications for Conservation: Targeted conservation is urgently needed. Priorities include habitat protection, enforcement against illegal logging, community-based forest management, and surveys in nearby suitable areas such as Mount Masurai. The species’ unique traits and evolutionary significance also make it a strong candidate for further research and a flagship for montane forest conservation in Sumatra.
The Phytosociology of Tree Communities on Two Mounts in Bedugul Highland Tropical Forest, Bali, Indonesia Muhammad Bima Atmaja, Sutomo, Nida Humaida, Eko Pujiono, M. Hadi Saputra, et al. Media Konservasi, 2025 The forested regions within the Bedugul highland stand as some of the last remaining tropical mountain rainforests in Bali. However, recent development in Bedugul indicates a surge in mass tourism, posing a threat to its diverse plant life due to increased land-use changes and overpopulation. Hence, this research aimed to ascertain the composition and diversity of tree communities within the Bedugul highland forest, focusing on Mt. Pohen and Mt. Tapak. While Mt. Pohen has a history of disturbances like the establishment of a geothermal power plant and forest fires, Mt. Tapak experiences comparatively less disruption. The methods include species identification, the diversity index calculation, the species composition and abundance, and the similarity analysis between permanent sample plot (PSP) from Mt. Pohen and PSP from Mt. Tapak. The result shows a clear separation in tree species composition and abundance between both PSPs. Some species are only detected at Tapak but absent at Pohen or vice versa. However, Euphorbiaceae is the dominating family in both mounts, as the species are known as pioneer plants that benefit in growth and adaptation to the highland habitat after disturbance. The most abundant species in a one-hectare plot on Mt. Pohen are Crypteronia paniculata and Acronychia trifoliata. While on Mt. Tapak, it appears to be Dendrochnide stimulans. Both mounts are occupied mainly by tree groups with diameters ranging from 10 to 20 cm.
Species Distribution Model and Conservation of Mentaok (Wrightia javanica) in Indonesia Sutomo Sutomo, N Humaida, L Wahab, M H Saputra, F Kurniawati, et al. Jurnal Manajemen Hutan Tropika, 2025 The Alas Mentaok was a forest dominated by the mentaok tree (Wrightia javanica) that once existed in Yogyakarta, Java Island, Indonesia. This forest has cultural and historical value, as it is believed to be the first location to establish the Mataram Islam Kingdom in Java in 1582 AD. This study utilized species distribution models (SDMs) to investigate the species distribution pattern and assess its latest conservation status in Java and the Lesser Sunda Islands, Indonesia. The methodology used involved collecting occurrence and environmental data of W. javanica, conducting species distribution modeling using the maximum entropy algorithm, evaluating the model's accuracy, and performing an independent assessment of the area of occupancy (AOO) and extensive occurrence (EOO) using the geospatial conservation assessment tool (GeoCAT). While the number of suitable habitat areas for W. javanica in Yogyakarta is projected to decrease by 2100, the islands of Sumba and Timor are anticipated to experience an increase in the suitable habitat areas for the species during the same year. The analysis of BIOCLIM 34 indicates the mean moisture index of the warmest quarter plays a vital role in the current and future projections. AOO calculation in GeoCAT places this species in the endangered (EN) category, particularly within our regions of interest in Java and the Lesser Sunda Islands. Overall, a full assessment combining a habitat suitability model with current conservation status information would provide a more comprehensive understanding of mentaok's habitat preferences and current conservation status in Indonesia.
Assessing Habitat Suitability for the Invasive Species Lantana camara on Bali Island: A Model Using the Biodiversity and Climate Change Virtual Laboratory (BCCVL) R Iryadi, M H Saputra, N Humaida, E Pujiono, J G Sukmawati, et al. Jurnal Manajemen Hutan Tropika, 2024 Indonesia, known for its high biodiversity, is threatened due to alien plants that invade local plant species in forest areas. West Bali National Park is overgrown with invasive exotic plants, such as Lantana camara L., known locally as the kembang telek. The research aims to predict the distribution of L. camara using species distribution models (SDMs) and analysis variable contribution in the model featured in the biodiversity climate change virtual laboratory (BCCVL) application. L. camara distribution prediction model in Bali used the Bioclim data input by identifying areas of low, medium, and high habitat suitability. Central mountainous regions, including parts of Buleleng, Jembrana, Bangli, Karangasem, and Tabanan, show the highest suitability. Response curves demonstrated the correlation between climate variables and occurrence probability, highlighting the specific condition of rainfall and temperature ranges favoring Lantana's growth. The model showed a reliable AUC value of 0.89, indicating realibility. Potential improvements through additional environmental parameters were suggested. While L. camara has some potential benefits as a medicinal plant in Balinese culture, its invasive nature poses significant threats to native ecosystems. The predictive map offers valuable insights for authorities to implement initiative-taking strategies for preventing and controlling Lantanas spread in vulnerable areas of Bali.
Edaphic Characteristics of Rafflesia Habitats in Indonesia: Implications for Conservation and Propagation Febrina Artauli Siahaan, Rajif Iryadi, Dewi Lestari Journal of Tropical Biodiversity and Biotechnology, 2024 Rafflesia, a holoparasitic and endophytic plant, depends on its host, Tetrastigma spp., for survival, thus highlighting the critical interdependence between these species. Given the endangered status of Rafflesia due to anthropogenic pressures and narrow distribution, comprehensive conservation efforts are crucial. Ecological data on edaphic conditions, particularly the presence of the host, are important for effective conservation strategies. This study assessed soil properties across Rafflesia habitats on Sumatera, Borneo, and Java islands, revealing similarities in pH, carbon, nitrogen, cation exchange capacity (CEC), while the soil texture varied. These findings contribute valuable insights for informed conservation initiatives, both in-situ and ex-situ.
AGROFORESTRY IN THE ALAS MERTAJATI OF BALI, INDONESIA. A CASE STUDY IN SUSTAINABLE SMALL-SCALE FARMING PRACTICES AND GEOAI J. Liu, R. Iryadi, M. Böhlen International Archives of the Photogrammetry Remote Sensing and Spatial Information Sciences ISPRS Archives, 2023 This paper describes new results from a land survey of the Alas Mertajati in Central Bali based on multi-spectral data collected from a new class of commercially available satellites. We use these assets to create the first representations of sustainable small-scale farming, agroforestry, in the study area. We describe the process of producing the results, specifically establishing ground truth for complex land cover and land use classes, and discuss how input from stakeholders can be included in the creation of these representations. Furthermore, we describe an open-source software environment developed to create our classification pipeline with a focus on shallow learners, collaborative workflows and intuitive visualization results. The text ends with a discussion of bad maps; maps that contain outdated data, and why such maps are now problematic, particularly in resource constrained contexts.
Population Assessment, Updated Description, and Prediction of Habitat Distribution for the Sumatran Endemic Tree Magnolia calophylloides (Magnoliaceae) DS Rinandio, R Iryadi, Z Arico, E Primananda, WA Mustaqim, J Linsky, ... Tropical Conservation Science 19 (https://doi.org/10.1177/1940082926142630), 10 , 2026 2026
Chemical profiling of the folk medicinal plant Hippobroma longiflora as a tool for selecting ex-situ conservation site HI Januar, Sutomo, MH Saputra, N Humaida, I Hidayah, MB Atmaja, ... Vegetos, 1-10 , 2026 2026
The Phytosociology of Tree Communities on Two Mounts in Bedugul Highland Tropical Forest, Bali, Indonesia. MB Atmaja, N Humaida, E Pujiono, MH Saputra, JG Sukmawati, A Hani, ... Media Konservasi 30 (2) , 2025 2025
Water Resource Vulnerability Assessment to Climate Variability: A Case Study of the Opak Watershed, Indonesia E Pujiono, W Herningtyas, R Iryadi, MH Saputra, N Humaida, MB Atmaja, ... Remotely Sensed Rivers in the Age of Anthropocene, 61-83 , 2025 2025
Quantifying Landscape Metrics Land Cover and Forest Disturbance to Inform Management Models in the Tropical Basin, Bedugul, Bali R Iryadi, Sutomo, MB Atmaja, MH Saputra, E Pujiono, N Humaida, A Hani, ... Remotely Sensed Rivers in the Age of Anthropocene, 559-581 , 2025 2025
Enhancing River Sustainability: A Comprehensive Approach to Riparian Ecology Assessment JG Sukmawati, Sutomo, MH Saputra, E Pujiono, N Humaida, A Hani, ... Remotely Sensed Rivers in the Age of Anthropocene, 395-427 , 2025 2025
A Case Study of the Opak Watershed E Pujiono, W Herningtyas, R Iryadi, MH Saputra, N Humaida Remotely Sensed Rivers in the Age of Anthropocene, 61 , 2025 2025
Species Distribution Model and Conservation of Mentaok (Wrightia javanica) in Indonesia. N Humaida, L Wahab, MH Saputra, F Kurniawati, MB Atmaja, E Pujiono, ... Journal of Tropical Forest Management/Jurnal Manajemen Hutan Tropika 31 (1) , 2025 2025 Citations: 1
Assessing Habitat Suitability for the Invasive Species Lantana camara on Bali Island: A Model Using the Biodiversity and Climate Change Virtual Laboratory (BCCVL). R Iryadi, MH Saputra, JG SukmawatI, A Hani, KKI Swari, DAI Sari, ... Journal of Tropical Forest Management/Jurnal Manajemen Hutan Tropika 30 (3) , 2024 2024 Citations: 3
Edaphic Characteristics of Rafflesia Habitats in Indonesia: Implications for Conservation and Propagation F artauli Siahaan, R Iryadi, D Lestari Journal of Tropical Biodiversity and Biotechnology 9 (3), 89231 , 2024 2024 Citations: 3
The flowering process of Prunus cerasoides Buch.-Ham. ex D.Don in Bali botanic garden. GAE Oktavia, R Iryadi, T Warseno, H Purnobasuki 2023
The influence of environmental conditions on the distribution and abundance of Sauromatum horsfieldii Miq. at Mount Tapak, Bali R Iryadi, PK Wardhani Buletin Kebun Raya 26 (2), 73–83-73–83 , 2023 2023
Agroforestry in the Alas Mertajati of Bali, Indonesia. A case study in sustainable small-scale farming practices and GeoAI J Liu, R Iryadi, M Böhlen The International Archives of the Photogrammetry, Remote Sensing and Spatial … , 2023 2023 Citations: 2
Tree architecture model and tree health assessment using sonic 3D tomograph relationship in Bali Botanical Garden SF Hanum, A Rahayu, R Iryadi, IDP Darma Jurnal Manajemen Hutan Tropika 29 (1), 99-108 , 2023 2023 Citations: 3
Usada Merawat dan Menjaga Kearifan Lokal F Kurniawati, DO Pribadi, IDP Darma, IPAH Wibawa, R Iryadi, SF Hanum, ... Media Sains Indonesia , 2023 2023 Citations: 1
The flowering process of Prunus cerasoides in Bali Botanic Gardens, Indonesia. GAE Oktavia, R Iryadi, T Warseno, H Purnobasuki Biodiversitas: Journal of Biological Diversity 24 (2) , 2023 2023 Citations: 2
Habitat suitability modeling for Jalak Bali (Leucopsar rothschildi) in East Java, Bali, and Lombok: A potential sites for its ex-situ conservation LPEK Yuni, R Iryadi, E Etten AIP Conference Proceedings 2606 (1) , 2023 2023
Habitat suitability modeling for Jalak Bali ( Leucopsar rothschildi ) in East Java, Bali, and Lombok: A potential sites for its ex-situ conservation Sutomo, LPEK Yuni, R Iryadi, E Etten AIP Conference Proceedings 2606 (1), 050005 , 2023 2023 Citations: 5
Analisis Ketergangguan Tutupan Vegetasi Menggunakan Spasio-Temporal Landscape Metrics Penutupan Lahan di Lereng Barat Hutan Bukit Pohen–Bali R Iryadi Universitas Gadjah Mada , 2023 2023 Citations: 1
An Update on the Habitat Suitability Model of Dacrycarpus imbricatus (Blume) de Laub. and Its Conservation Status in Bali, Indonesia S Sutomo, MB Atmaja, IDP Darma, R Iryadi, A Hani, IMS Wijaya, ... Journal of Tropical Biodiversity and Biotechnology 8 (1), 74578 , 2023 2023
MOST CITED SCHOLAR PUBLICATIONS
Flowers and value of conservation in the culture of Hindu community in Bali IDP Darma, S Sutomo, SF Hanum, R Iryadi, A Rahayu Biosaintifika: Journal of Biology & Biology Education 13 (1), 34-40 , 2021 2021 Citations: 21
Konservasi Tumbuhan Obat Tradisional “Usada Bali.” S Sutomo, R Iryadi Buletin Udayana Mengabdi 18 (4), 58-63 , 2019 2019 Citations: 21
Paku Epifit dan Pohon Inangnya di Bukit Pengelengan, Tapak dan Lesung, Bedugul, Bali IDP Darma, WS Lestari, A Priyadi, R Iryadi Jurnal Penelitian Hutan dan Konservasi Alam 15 (1), 41-50 , 2018 2018 Citations: 21
Plant conservation based on tri mandala concept on homegarden at Pakraman Penge village, Baru village, Marga district, Tabanan regency, Bali IDP Darma, S Sutomo, SF Hanum, R Iryadi J. Trop. Biodivers. Biotechnol 5 (03), 189-200 , 2020 2020 Citations: 15
Studi Etnobotani Masyarakat di Sekitar Kawasan Hutan Bedugul Bali IDP Darma, A Priyadi, R Iryadi Biotropic: The Journal of Tropical Biology 3 (2), 96-104 , 2019 2019 Citations: 14
Influence the existence of the Bali Botanical Garden for land cover change in Bedugul basin using Landsat time series R Iryadi, MN Sadewo Procedia Environmental Sciences 24, 158-164 , 2015 2015 Citations: 13
Multistoried agroforestry system of Gaharu ( Gyrinops verstegii (Gilg.) Domke) in Flores Island East Nusa Tenggara R Iryadi, Sutomo, IDP Darma IOP Conference Series: Earth and Environmental Science 648 (1), 012024 , 2021 2021 Citations: 11
Savanna-forest boundary on Mount Rinjani, Lombok Island, West Nusa Tenggara, Indonesia E van Etten, R Iryadi Society for Indonesian Biodiversity 22 (2), 726 , 2021 2021 Citations: 10
Use of Landsat imagery to map spread of the invasive alien species Acacia nilotica in Baluran National Park, Indonesia S Sutomo, E Van Etten, R Iryadi SEAMEO BIOTROP Southeast Asian Regional Centre for Tropical Biology 27 (1), 88 , 2020 2020 Citations: 10
Penggunaan Citra Satelit untuk Mengetahui Persebaran Dacrycarpus imbricatus (Blume) de Laub. di Bukit Tapak, Cagar Alam Batukahu Bali R Iryadi, A Priyadi, IDP Darma Jurnal Ilmu Kehutanan 11 (2), 130-141 , 2017 2017 Citations: 10
Threatened exotic species of botanical gardens: Application of trait-based naturalized species risk scoring assessment DI Junaedi, T Nasution, DM Putri, R Iryadi, R Lestari, V Kurniawan, ... South African Journal of Botany 152, 321-331 , 2023 2023 Citations: 9
Who speaks for the forest? Local knowledge, participatory mapping and collaborative evaluation for GIS analysis in the tropics of central Bali, Indonesia M Böhlen, J Liu, R Iryadi The International Archives of the Photogrammetry, Remote Sensing and Spatial … , 2022 2022 Citations: 8
The dissimilarity in plant species composition of savanna ecosystem along the elevation gradient on Flores Island, East Nusa Tenggara, Indonesia S Sutomo, IDP Darma, R Iryadi Biodiversitas 21 (2), 492-496 , 2020 2020 Citations: 7
ECOLOGY OF BEDUGUL BASIN BALI Sutomo, W Sujarwo, IDP Darma, A Priyadi, F Kuswantoro, R Iryadi 2018 Citations: 7
Conservation status of agarwood-producing species (Gyrinops versteegii) in Indonesia S Sutomo, R Iryadi, IM Sumerta Biosaintifika: Journal of Biology & Biology Education 13 (2), 149-157 , 2021 2021 Citations: 6
Kirinyuh ( Chromolaena odorata ): species distribution modeling and the potential use of fungal pathogens for its eradication Sutomo, E Yulia, R Iryadi IOP Conference Series: Earth and Environmental Science 762 (1), 012023 , 2021 2021 Citations: 6
Plant diversity utilization and land cover composition in the Subak Jatiluwih, Bali, Indonesia S Sutomo, R Iryadi, IDP Darma, I Wibawa, A Rahayu, SF Hanum Biodiversitas J Biol Divers 22 (3), 1424-32 , 2021 2021 Citations: 6
Predicting species distribution for true indigo (Indigofera tinctoria L.) in Citarum Watershed, West Java, Indonesia D Usmadi, S Sutomo, R Iryadi, SF Hanum, IDP Darma, I Wibawa J. Trop. Biodivers. Biotechnol 6, 65398 , 2021 2021 Citations: 6
Habitat suitability modeling for Jalak Bali ( Leucopsar rothschildi ) in East Java, Bali, and Lombok: A potential sites for its ex-situ conservation Sutomo, LPEK Yuni, R Iryadi, E Etten AIP Conference Proceedings 2606 (1), 050005 , 2023 2023 Citations: 5
Wood decay diagnostic of Joannesia princeps Vellozo at Bali Botanical Garden using arborsonic acoustic 3D tomograph SF Hanum, R Iryadi, A Rahayu, TM Bangun, IDP Darma, Sutomo IOP Conference Series: Materials Science and Engineering 935 (1), 012069 , 2020 2020 Citations: 5