Baseline UVC-Based Mapping and Condition Scoring of Fish Apartment Units: A Case Study from Situbondo, Indonesia

Andik Isdianto; Oktiyas Muzaky Luthfi; Tri Djoko Lelono; Muhammad Rifky Zhafran; Muhammad Naufal Eka Putra

doi:10.48084/etasr.18001

Authors

Andik Isdianto Department of Marine Science, Brawijaya University, Indonesia https://orcid.org/0000-0002-4808-7868
Oktiyas Muzaky Luthfi Department of Marine Science, Brawijaya University, Indonesia https://orcid.org/0000-0002-9550-9381
Tri Djoko Lelono Department of Fisheries Resource Utilization, Brawijaya University, Indonesia https://orcid.org/0000-0002-6458-8451
Muhammad Rifky Zhafran Department of Marine Science, Brawijaya University, Indonesia
Muhammad Naufal Eka Putra Master Program of Environmental Management & Development, Brawijaya University, Indonesia https://orcid.org/0009-0001-8821-6070

Volume: 16 | Issue: 3 | Pages: 36219-36224 | June 2026 | https://doi.org/10.48084/etasr.18001

Received: 6 February 2026 | Revised: 18 April 2026 | Accepted: 30 April 2026 | Online: 6 June 2026

Corresponding author: Andik Isdianto

Abstract

Artificial reef performance depends on structural stability after deployment, yet site-level post-deployment assessments remain limited. This study evaluated 32 deployed reef modules at Karang Mayit, Situbondo, East Java, Indonesia, through underwater visual inspection conducted on 17–19 August 2025. Relative module positions were reconstructed from distance–bearing measurements linked to a seabed baseline and surface GPS, whereas physical status was assessed using breakage/collapse, debris/net coverage, inclination, and sediment accumulation integrated into a Total Condition Score (TCS). The modules occupied a nearshore depth range of 6–14 m and formed five depth zones. No units showed breakage/collapse or net/debris coverage, whereas variability was mainly associated with inclination (4–42°) and sediment accumulation (0–25 cm). TCS classified 15 units (47%) as Good and 17 units (53%) as Moderate, with no Severe category recorded. These findings provide a practical post-deployment assessment framework for structural integrity evaluation, maintenance prioritization, and long-term monitoring of artificial reef installations.

Keywords:

artificial reef monitoring, post-deployment assessment, structural integrity, module inclination, sediment burial, habitat rehabilitation, maintenance prioritization, coastal fisheries management

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