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All Journal Zona Laut : Jurnal Inovasi Sains dan Teknologi Kelautan
Muhamad Saleh Nurdin
Universitas Tadulako
Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Energy Engineering Transportation

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Accumulation, Composition, Density, and Volume of Marine Litter on Palu Bay Roni Hermawan; Nur Hasanah; Muhamad Saleh Nurdin; Aswad Eka Putra; Musayyadah Tis'in; Femi Riza; Septina Fifi Mangintung; Andi Heryanti Rukka; Eko Purwanto; Nurul Rizki Ramadhani; Nursalwa Nursalwa; Charlos Daniel Darae; Fitra Harry Utama
Zona Laut : Jurnal Inovasi Sains Dan Teknologi Kelautan Volume 7, Issue 1, March 2026 Edition
Publisher : Departemen Teknik Kelautan Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.62012/zl.vi.48123

Abstract

Marine litter poses an increasing threat to the coastal ecosystem of Palu Bay, Indonesia, driven by contrasting land-based human activities. This study assessed the accumulation, composition, density, and volume of macro-debris (>2.5 cm) at four coastal stations representing residential, river-influenced, and tourism-dominated areas. Surveys were conducted from June to September 2025 using a line transect method. The results showed marked spatial differences in marine litter characteristics. Residential and river-influenced sites (Baiya and Mamboro Beaches) recorded the highest debris weights (4003.67–4378.22 g/m²), dominated by heavier household waste transported via river systems. In contrast, tourism areas (Taman Ria and Kampung Nelayan Beaches) exhibited lower debris weights (1697.67–1892.37 g/m²) but significantly higher item densities (14.46–17.28 items/m²) and volumes, reflecting the dominance of lightweight, single-use plastics from recreational activities. Plastic debris dominated all stations, exceeding 94% in tourism zones. These findings demonstrate a clear dichotomy in litter sources and characteristics between tourism and residential areas, underscoring the need for targeted management strategies. Effective mitigation should prioritize single-use plastic restrictions, adequate waste facilities, and visitor awareness in tourism areas, alongside improved household waste collection and riverine waste control in residential watersheds. Such source-specific approaches are essential for sustainable coastal management in Palu Bay and comparable semi-enclosed bays.
Co-Authors Aswad Eka Putera Charlos Daniel Darae Eko Purwanto Femi Riza Fitra Harry Utama Heriyanti Rukka Musayyadah Tis'in Nur Hasanah Nursalwa Nursalwa Nurul Rizki Ramadhani Roni Hermawan Septina Fifi Mangintung