Title: Effect of sediment physicochemical properties and sedimentary pollution on mangrove sustainability in a coastal environment

Authors: Temitope D. Timothy Oyedotun

Addresses: Department of Geography, Faculty of Earth and Environmental Sciences, University of Guyana, Turkeyen Campus, Georgetown, Guyana

Abstract: Mangroves provide vital ecosystem services, including soil stabilisation, biodiversity support, erosion control, carbon storage, and storm protection, yet they are threatened by human-driven pollution and deforestation. This study investigates how sediment physicochemical properties and pollution affect mangrove health across four Guyanese sites: Wellington Park, Abary, Mahaica, and Mahaicony. Sediment moisture, metal concentrations, and microplastic contamination were analysed using XRF and stereoscopic methods. Results show strong spatial variability, with Wellington Park exhibiting the highest moisture fluctuations, elevated metal levels, and the greatest microplastic pollution, making it the most vulnerable to erosion and mangrove decline. Metal concentrations such as iron, copper, zinc, and arsenic varied significantly across sites, influencing soil quality and vegetation health. Abary, Mahaica, and Mahaicony showed more stable sediment conditions and less pollution, supporting healthier mangrove stands. The study highlights the need for integrated research, policy action, waste management, restoration, and community involvement to sustain Guyana's mangroves.

Keywords: climate change; coastal environments; coastal ecosystems; mangrove sustainability; microplastic pollution; sediment physicochemical properties; trace metal concentrations; soil moisture content.

DOI: 10.1504/IER.2026.152830

Interdisciplinary Environmental Review, 2026 Vol.25 No.2, pp.149 - 184

Received: 14 Dec 2024
Accepted: 10 Dec 2025
Published online: 13 Apr 2026 *

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