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

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Penilaian

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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.

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Availability

Inventory Code	Barcode	Call Number	Location	Status
2507002772	T173212	T1732122025	Central Library (Reference)	Available but not for loan - Not for Loan

Detail Information

Series Title

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Call Number

T1732122025

Publisher

: Prodi Magister Teknik Pertambangan, Fakultas Teknik Universitas Sriwijaya., 2025

Collation

viii, 73 hlm.; Ilus., tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

622.07

Content Type

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Media Type

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Carrier Type

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Edition

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Subject(s)

Teknik Tambang

Specific Detail Info

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Statement of Responsibility

EM

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