ANALISIS PROGRAM REKLAMASI LAUT MENGGUNAKAN ARTIFICIAL REEF DI PERAIRAN REBO KABUPATEN BANGKA PT TIMAH Tbk

RAHENDRA, RAHENDRA and Yusuf, Maulana and Toha, Taufik (2025) ANALISIS PROGRAM REKLAMASI LAUT MENGGUNAKAN ARTIFICIAL REEF DI PERAIRAN REBO KABUPATEN BANGKA PT TIMAH Tbk. Undergraduate thesis, Sriwijaya University.

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Abstract

The continuously rising global demand for tin metal drives an increase in mining activities. This triggers landscape alterations that further amplify the risks of pollution and environmental degradation, thereby potentially undermining the structure and function of foundational ecosystems that sustain life. Rebo Sea waters remain within the environmental impact assessment (AMDAL) study area of PT TIMAH Tbk, a zone affected by offshore tin mining activities. The marine reclamation program, involving the deployment of artificial reef modules, aims to rehabilitate fish habitats and other marine organisms. This research evaluates PT TIMAH Tbk’s artificial reef-based marine reclamation program, implemented from 2018 to 2023. The study was conducted from March to July 2024 at sites where artificial reef modules were submerged during the Reclamation Obligation Years of 2019, 2021, and 2023. Fish data were collected using a modified Belt Transect method. Biomass calculations were adjusted by incorporating economically valuable target fish species. The 2021 Reclamation Obligation Year modules showed the highest fish diversity (40 species), the greatest Shannon-Wiener Index (H’ = 3.20), and the highest biomass (2,908.80 kg/ha). Diversity Index (H’): Ranged from 1.80 to 3.20, classified as “moderate” to “high.” Dominance Index (D): Ranged from 0.06 to 0.36, categorized as “moderate.” Evenness Index (E): Ranged from 0.34 to 0.53, falling into “moderate” to “low” criteria. The fish biomass values ranged from 129.66 to 2,908.80 kg/ha. The longer the artificial reef modules remain submerged, the greater the increase in schooling fish species, while target fish species decline due to fishing activities. The analytical criteria for these results refer to natural habitat (coral reef) assessment standards. Researchers recommend establishing specific threshold criteria tailored to artificial habitats in environmentally disturbed conditions (e.g., offshore mining areas). Artificial reefs have the potential to enhance fish diversity but lack stability in maintaining long-term biomass and density. Policy interventions and mitigation of external disturbances are critical to ensure ecosystem sustainability.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	Reklamasi Laut, Artificial reef
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN1-997 Mining engineering. Metallurgy
Divisions:	03-Faculty of Engineering > 31101-Mining Engineering (S2)
Depositing User:	Rahendra Rahendra
Date Deposited:	19 May 2025 08:26
Last Modified:	19 May 2025 08:26
URI:	http://repository.unsri.ac.id/id/eprint/173212

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