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All Journal Budapest International Research and Critics Institute-Journal (BIRCI-Journal): Humanities and Social Sciences Jurnal Pengabdian kepada Masyarakat Nusantara International Journal of Environmental, Sustainability, and Social Science Jurnal Bisnis Mahasiswa Jurnal Pengabdian Kepada Masyarakat (JPKM) Jurnal Teknologi Jurnal Ilmiah Fakultas Sains dan Teknik Universitas Nusa Cendana Journal of Governance, Taxation, and Auditing International Review of Practical Innovation, Technology and Green Energy (IRPITAGE) Journal of Advances in Accounting, Economics, and Management Jurnal Pengabdian Masyarakat dan Riset Pendidikan Research of Scientia Naturalis
Robertho Kadji
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Religion Agriculture, Biological Sciences & Forestry Arts Humanities Chemical Engineering, Chemistry & Bioengineering Chemistry Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Economics, Econometrics & Finance Education Energy Engineering Environmental Science Industrial & Manufacturing Engineering Languange, Linguistic, Communication & Media Mathematics Physics Social Sciences Other

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THE ECOLOGICAL IMPACT OF VOLCANIC ASH DEPOSITION FROM MOUNT SEMERU’S ERUPTION ON SOIL MICROBIAL COMMUNITIES AND PLANT SUCCESSION Kadji, Robertho; Elíasdóttir, Emilía; Clark, Isabella
Research of Scientia Naturalis Vol. 2 No. 6 (2025)
Publisher : Yayasan Adra Karima Hubbi

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.70177/scientia.v2i6.2542

Abstract

Volcanic eruptions are powerful geological events that drastically alter terrestrial ecosystems, yet the specific ecological recovery mechanisms, particularly the interplay between soil microbiology and vegetation, remain underexplored. The recent eruption of Mount Semeru in Indonesia deposited significant layers of volcanic ash, creating a unique natural laboratory to study primary succession. This research aimed to analyze the ecological impact of this ash deposition on the composition of soil microbial communities and the subsequent patterns of plant succession in the affected areas. The study employed a field survey method across a gradient of ash deposition thickness. Soil samples were collected for DNA metabarcoding to analyze bacterial and fungal community structures, while vegetation quadrats were established to monitor plant species recolonization and growth over a 12-month period. The results revealed a significant initial reduction in microbial diversity in heavily impacted soils, with a subsequent shift towards communities dominated by stress-tolerant, chemoautotrophic bacteria. This altered microbial landscape was strongly correlated with the emergence of pioneer plant species adapted to nutrient-poor volcanic substrates. The study concludes that volcanic ash deposition fundamentally resets soil microbial ecosystems, and this shift is a critical determining factor that directly governs the trajectory and composition of early-stage plant succession.
DEVELOPMENT OF THE BONEN CAVE TOURISM AUGMENTED REALITY APPLICATION BASED ON WATERFALL ANALYSIS Robertho Kadji; Irene Augusta Boymau; Lidia Paskalia Nipu; Ika FitriKrisnasiwi; Henda V. R. Taopan; Frengky S. Banunaek; Rizhard A. Ndolu
International Review of Practical Innovation, Technology and Green Energy (IRPITAGE) Vol. 5 No. 3 (2025): November 2025 - February 2026
Publisher : RADJA PUBLIKA

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5281/zenodo.19480411

Abstract

This study presents the application of an Augmented Reality (AR)–based digital interpretation system to enhance speleological geotourism experiences at Bonen Cave, Baumata Village, Kupang Regency, Indonesia. The research addresses limitations in conventional geotourism interpretation, including low interactivity, limited informational accessibility, and potential environmental disturbance in karst cave environments. The developed AR application integrates three-dimensional cave models, geological explanations, and historical narratives related to the use of the cave during the Japanese occupation period. Implementation was conducted through a community-based approach involving local tour guides and tourism stakeholders. The application was officially launched during the Fatusuba Festival on 17 October 2025 and publicly demonstrated to visitors. Field testing confirmed stable performance and compatibility across multiple Android devices, including Redmi Note 13 Pro, Redmi Note 9 Pro, and Samsung Galaxy A56. Results indicate that the AR application improves visitor engagement, supports knowledge transfer, and strengthens digital promotion of speleological geotourism while reducing the need for direct physical interaction with sensitive cave features. This study demonstrates that AR technology can serve as an effective and sustainable tool for enhancing geotourism experiences and empowering local communities in karst regions.
Co-Authors Arthana, I Komang Ayuvera Rifani Ray Banunaek, Noni Bouk, Maria Claudia Cindy Clark, Isabella Ekasari, Juendiny Chrisna Elíasdóttir, Emilía Frengky S. Banunaek Henda V. R. Taopan Ika Fitri Krisnasiwi Ika FitriKrisnasiwi Irene Augusta Boymau Leda Muga, Maria Prudensiana Lia Alfianita Lidia Paskalia Nipu Metboki, Matilda Ndolu, Rizhard A. Peny Supriatno Raka, Marco De Aviano Rizhard A. Ndolu Rizky Syaputra Sundari, Woro Yusuf Rumbino