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All Journal Jurnal Ilmu dan Teknologi Kelautan Tropis Protobiont: Jurnal Elektronik Biologi Tengkawang : Jurnal Ilmu Kehutanan Jurnal Kelautan : Indonesian Journal of Marine Science and Technology Jurnal Perikanan dan Kelautan Jurnal Kelautan Tropis Jurnal Pengabdian Kepada Masyarakat (Indonesian Journal of Community Engagement) Journal of Applied Geospatial Information Jurnal Biologi Tropis JURNAL PENGABDI Jurnal Laut Khatulistiwa Abdi: Jurnal Pengabdian dan Pemberdayaan Masyarakat Jurnal Laot Ilmu Kelautan Jurnal Pasopati : Pengabdian Masyarakat dan Inovasi Pengembangan Teknologi JURNAL PENGABDIAN AGRO AND MARINE INDUSTRY Jurnal Pendidikan dan Pengabdian Masyarakat JAMAS: Jurnal Abdi Masyarakat Bina Bahari : Jurnal Pengabdian Kepada Masyarakat Jurnal Kelautan dan Pesisir Indenesian Journal of Tropical Biology Indenesian Journal of Tropical Biology
Adityo Raynaldo
Program Studi Biologi, Fakultas IPA Dan Kelauatan, Universitas OSO
Aerospace Engineering Agriculture, Biological Sciences & Forestry Humanities Automotive Engineering Biochemistry, Genetics & Molecular Biology Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Energy Engineering Environmental Science Health Professions Immunology & microbiology Industrial & Manufacturing Engineering Library & Information Science Materials Science & Nanotechnology Mechanical Engineering Medicine & Pharmacology Physics Public Health Social Sciences Other

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Culturable Microbial Abundance and Morphotypes in Stingless Bee Honey from Urban and Rural Landscapes Fitriyan Kurnia; Elpe Bibas; Muftiah Yasi Dwi Wahyuni; Etha Marista; Adityo Raynaldo; Nur Exsanty Rembulan; Jani Putri Rara; Riza Linda
Jurnal Biologi Tropis Vol. 26 No. 3 (2026): Juli - September
Publisher : Biology Education Study Program, Faculty of Teacher Training and Education, University of Mataram, Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jbt.v26i3.12128

Abstract

Stingless bee honey contains culturable microorganisms that may vary with floral resources, hive conditions, handling, and surrounding landscapes. This descriptive study compared total culturable counts and colony/cell morphotypes in Heterotrigona itama honey collected from one urban site in Pontianak and one rural site in Ambawang, Kubu Raya. Honey was serially diluted, cultured on Glucose Peptone Agar, and characterized using colony morphology, Gram staining, and endospore observations. Total Plate Count (TPC) values varied among isolates within each landscape: urban isolates ranged from 1.98 × 105 to 1.12 × 106 CFU/mL, while rural isolates ranged from 8.9 × 104 to 2.2 × 105 CFU/mL.  Urban cultures included bacterial and yeast-like morphotypes, whereas rural cultures were represented by Gram-positive, non-spore-forming bacterial morphotypes. These observations describe culturable abundance and morphology but do not establish taxonomic identity, community diversity, or a causal landscape effect because site replication, molecular identification, physicochemical covariates, and inferential statistics were not reported. The study provides preliminary data that can guide replicated surveys combining culture-based and sequencing approaches.
Analysis of Changes in Vegetation Density in Tanjung Belimbing Nature Park Using the NDVI Vegetation Index Method. Mohamad Jakaria; Eka Haryati Yuliany; Adityo Raynaldo
Indonesian Journal of Tropical Biology Vol. 2 No. 2 (2026): August In Progres
Publisher : Yayasan Siti Widhatul Faeha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65622/ijtb.v2i2.290

Abstract

Coastal protected areas require reliable spatial information on vegetation condition to support conservation and adaptive management. This study aimed to assess the spatial distribution and temporal change of NDVI-derived vegetation conditions in Tanjung Belimbing Nature Tourism Park, West Kalimantan, Indonesia, between 2019 and 2023. Landsat 8 OLI imagery was processed through radiometric correction, cloud screening, spatial alignment, NDVI calculation, and threshold-based classification, while 2023 results were supported by field observations, GPS records, photographs, and drone imagery. Vegetation change was evaluated through postclassification comparison of the two observation years. The results showed that high-density vegetation remained the dominant class and increased from 521.87 ha in 2019 to 638.98 ha in 2023, whereas moderate- and low-density vegetation decreased by 72.50 and 61.47 ha, respectively. These changes indicate a redistribution of vegetation toward higher spectralgreenness conditions rather than extensive conversion to non-vegetated land. However, NDVI represents vegetation greenness rather than direct forest structure or biomass. The findings provide a spatial baseline for identifying persistent vegetation, greenness gain, and potential decline, and can support conservation zoning, field verification, rehabilitation prioritization, and long-term vegetation monitoring.
Analysis of Changes in Vegetation Density in Tanjung Belimbing Nature Park Using the NDVI Vegetation Index Method. Mohamad Jakaria; Eka Haryati Yuliany; Adityo Raynaldo
Indonesian Journal of Tropical Biology Vol. 2 No. 2 (2026): August In Progres
Publisher : Yayasan Siti Widhatul Faeha

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65622/ijtb.v2i2.290

Abstract

Coastal protected areas require reliable spatial information on vegetation condition to support conservation and adaptive management. This study aimed to assess the spatial distribution and temporal change of NDVI-derived vegetation conditions in Tanjung Belimbing Nature Tourism Park, West Kalimantan, Indonesia, between 2019 and 2023. Landsat 8 OLI imagery was processed through radiometric correction, cloud screening, spatial alignment, NDVI calculation, and threshold-based classification, while 2023 results were supported by field observations, GPS records, photographs, and drone imagery. Vegetation change was evaluated through postclassification comparison of the two observation years. The results showed that high-density vegetation remained the dominant class and increased from 521.87 ha in 2019 to 638.98 ha in 2023, whereas moderate- and low-density vegetation decreased by 72.50 and 61.47 ha, respectively. These changes indicate a redistribution of vegetation toward higher spectralgreenness conditions rather than extensive conversion to non-vegetated land. However, NDVI represents vegetation greenness rather than direct forest structure or biomass. The findings provide a spatial baseline for identifying persistent vegetation, greenness gain, and potential decline, and can support conservation zoning, field verification, rehabilitation prioritization, and long-term vegetation monitoring.
Co-Authors . Apriansyah Agung, Medha Pradipta Alfikri, Shihab Hidayat Andika, Wawan Wahyu Auliansyah, Auliansyah Ayub Sugara Budhi Agung Prasetyo Dwihastuty, Leny Eka Haryati Yuliany Eko Subrata Elpe Bibas ELPE BIBAS, ELPE erli, erli Etha Marista Etha Marista Etha Marista Etha Marista Fitriyan Kurnia Fitriyan Kurnia Fitriyan Kurnia Halim, Sadri Hartono Hartono Hendi Santoso Hendrawan Hendrawan Ilyas, Nail Radhy Indah Yuliastuti, Indah Isharianto, Isharianto Jani Putri Rara Juliono, Fransiskus Kushadiwijayanto, Arie Antasari Kusumardana, Setra Lestari, Fikanti Putri Maulana, Gusti Farhan Mohamad Jakaria Muftiah Yasi Dwi Wahyuni Muftiah Yasi Dwi Wahyuni Muftiah Yasi Dwi Wahyuni Muhammad Hafidz, Muhammad Muhammad Yusuf Multazam, Multazam Nova Nova Nur Exsanty Rembulan Nursalam, Lodri Khairul Purnama, Freddy Surya Rafdinal Rafdinal Ramadhani, Hendri Risko, Risko Riza Linda Riza Linda Rizqan Khairan Munandar Robin Saputra Rudianto, Arif Shofiyah, Sofi S Shofiyah, Sofi Siti Sofi Siti Shofiyah Sofi Siti Shofiyah Sunardi Sunardi Supriyatno Supriyatno supriyatno supriyatno Triningsih, Endang Triyono Triyono Utami, Pratita Budi Vietsaman, Dionisius Endy Yada Pratama Zan Zibar Zibar, Zan Zulfian Zulfian