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All Journal Indonesian Journal of Geography Journal of Marine Research OSEATEK Maspari Journal Jurnal Kelautan : Indonesian Journal of Marine Science and Technology REKAYASA Jurnal Sumberdaya Akuatik Indopasifik Jurnal Kebijakan Perikanan Indonesia Jurnal Segara Nekton Jurnal Ilmiah AgriSains Kapas: Kumpulan Artikel Pengabdian Masyarakat Depik Jurnal Ilmu-Ilmu Perairan, Pesisir, dan Perikanan Proceedings of the Vocational Seminar on Marine and Inland Fisheries
Dwi Rosalina
Manajemen Sumberdaya Perairan, Fakultas Pertanian, Perikanan dan Biologi, Universitas Bangka Belitung
Agriculture, Biological Sciences & Forestry Computer Science & IT Earth & Planetary Sciences Economics, Econometrics & Finance Education Electrical & Electronics Engineering Engineering Environmental Science Materials Science & Nanotechnology Mathematics Physics Social Sciences Other

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APPLICATION OF 3D PHOTOGRAMMETRY TECHNIQUES AND ACCURACY EVALUATION IN MEASURING CORAL REEF VOLUME IN THE NORTHERN WATERS OF TUNDA ISLAND Wardono, Suko; Athaillah, Ibnu; Handayani, Endy; Rosalina, Dwi; Rizkiah, Riza
Proceedings of The Vocational Seminar on Marine & Inland Fisheries Volume 3 Nomor 1 Tahun 2026
Publisher : Politeknik Kelautan dan Perikanan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/voc_seminar.v3i1.20769

Abstract

This study explores the application of underwater 3D photogrammetry and accuracyevaluation in measuring coral reef volume in the northern waters of Tunda Island. The global decline in coral populations—due to environmental stressors such as rising sea temperatures, predation, and destructive human activities— necessitates accurate and non-destructive monitoring methods. 3D photogrammetry allows digital recording of coral shapes in three dimensions by processing underwater images using Agisoft Metashape and analyzing volume through MeshLab. The research focuses on three coral growth forms: branching, massive, and foliose, using varying numbers of photos (50, 100, 150, 200, and 250) to assess their impact on model accuracy. Results indicate that while more photos generally improve accuracy, this relationship is not always linear. For example, foliose corals showed a slight decrease in accuracy at 250 photos due to increased error points. Volume values remained relatively consistent despite accuracy variations. Several factors influenced reconstruction accuracy, including light conditions, water turbidity, current velocity, and camera positioning. Among all photo counts, 150 photos emerged as the most ideal—offering high accuracy with significant efficiency in data acquisition, storage, and processing time. This optimal balance makes it suitable for repeated monitoring efforts. In conclusion, this study demonstrates that underwater 3D photogrammetry is a practical and effective method for coral growth assessment. It supports the development of sustainable coral reef monitoring techniques that provide detailed, repeatable, and non-invasive data, crucial for marine conservation efforts.
ESTIMATED CARBON STOCK IN MANGROVE VEGETATION ON TUNDA ISLAND, SERANG REGENCY, BANTEN PROVINCE Wardono, Suko; Widayanti, Dhiya Artika; Ismail, R. Moh; Rosalina, Dwi; Rizkiah, Riza
Proceedings of The Vocational Seminar on Marine & Inland Fisheries Volume 3 Nomor 1 Tahun 2026
Publisher : Politeknik Kelautan dan Perikanan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/voc_seminar.v3i1.20765

Abstract

Tunda Island in Serang Regency, Banten Province, hosts a mangrove ecosystem with significant carbon storage potential, yet remains underutilized in climate mitigation efforts. This study aims to estimate the carbon stock of mangrove vegetation, focusing on leaf and branch components using both destructive and non-destructive methods. Samples were collected from six stations using line transect and 10×10 meter plot techniques. The identified mangrove species included Rhizophora apiculata, Rhizophora stylosa, Avicennia marina, Avicennia officinalis, and Bruguiera gymnorrhiza. Results showed estimated biomass ranging from 0.001757 to 0.024657 tons/ha, while carbon stock in leaves and branches ranged from 0.01197–0.01791 tons/ha and 0.02559–0.04184 tons/ha, respectively. Variations in carbon stock were influenced by dominant species, vegetation density, tree diameter (DBH), and environmental factors. The relatively low carbon values suggest that the mangrove ecosystem in Tunda Island is still in a developing phase. This highlights the need for sustainable conservation and rehabilitation efforts. The findings serve as a scientific foundation for coastal ecosystem management and blue carbon strategies in mitigating climate change.
MANGROVE HEALTH INDEX IN SEGARAJAYA VILLAGE, TARUMAJAYA DISTRICT, BEKASI REGENCY, WEST JAVA Wardono, Suko; Romauli S, Angelina Yohana; Rizkiah, Riza; Rosalina, Dwi
Proceedings of The Vocational Seminar on Marine & Inland Fisheries Volume 3 Nomor 1 Tahun 2026
Publisher : Politeknik Kelautan dan Perikanan Karawang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15578/voc_seminar.v3i1.20766

Abstract

Mangrove forests thrive under tidal influences and play vital ecological, physical, and economic roles. However, without proper management, they are prone to degradation. In Segarajaya Village, Tarumajaya District, Bekasi Regency, West Java, mangroves face threats from human activities such as land clearing for aquaculture and pollution from plastic and domestic waste. This study, conducted from February 25 to April 20, 2025, used the Mangrove Health Index (MHI) method by assessing canopy cover, density, stem diameter, and environmental factors (salinity, water and air temperature, soil pH, and substrate). The aim was to evaluate mangrove health based on these parameters. Three observation stations were established: Station 1 (Rhizophora apiculata, Avicennia marina, Sonneratia caseolaris), Station 2 (Bruguiera gymnorhiza, Sonneratia caseolaris), and Station 3 (Avicennia marina). The MHI results indicated a moderate health status with an average value of 61.78% (Station 1: 62.69%, Station 2: 61.63%, Station 3: 61.02%). Environmental conditions averaged 30.44‰ salinity, 27.94°C water temperature, 30.89°C air temperature, soil pH 7.33, and sandy clay to muddy substrates. The study provides baseline data for mangrove management and conservation efforts.
Co-Authors Abdul Rahman Adi Masliardi Agusrinal Amdani, Amdani Amiluddin, Muchtar Ani Leilani Anisya, Ainun Ansar, Soehardiman Ardiansyah, Indra Arif Prasetya Athaillah, Ibnu Awaluddin Awaluddin Cut Nuraini Dini Martasari Dini Sofarini Endang Bidayani Eva Utami Fatiha, Nurul Gaby Nanda Kharisma Handayani, Endy Hasidu, La Ode Abdul Fajar Hawati, Hawati Ismail, R Moh Khairul Jamil Lena Selpiani, Lena Maharani Maharani Maharani, Maharani Mardiana Mardiana Melinda Melinda Mery Melinda, Mery Muhammad Yusuf Najih, Muhammad Roin Rahmawati, Gita Riska Riska Rizkiah, Riza Rizkiah, Rizal Romauli S, Angelina Yohana Rombe, Katarina Hesty Roni Hermawan, Roni Ruly Isfatul Khasanah Ruzuqi, Rezza Sabilah, Anisa Aulia Suci Puspita Sari Sulistiyo, Budi Surachmat, Agus Sutrisno, Bagus Oktori Umroh ,, Umroh Wahda, A Nurtasya Wahyu Adi Wardono, Suko Warni Warni Warni, Warni Widayanti, Dhiya Artika Yasser Arafat Yohana Romauli, Angelina