Preprint Article Version 1 Preserved in Portico This version is not peer-reviewed

Quantitative Analysis of Urban Microplastic Dissemination and Accumulation in Marine Ecosystems: Pathways, Processes, and Impacts

Version 1 : Received: 30 March 2024 / Approved: 1 April 2024 / Online: 2 April 2024 (15:38:18 CEST)

How to cite: Alqarni, A. Quantitative Analysis of Urban Microplastic Dissemination and Accumulation in Marine Ecosystems: Pathways, Processes, and Impacts. Preprints 2024, 2024040148. https://doi.org/10.20944/preprints202404.0148.v1 Alqarni, A. Quantitative Analysis of Urban Microplastic Dissemination and Accumulation in Marine Ecosystems: Pathways, Processes, and Impacts. Preprints 2024, 2024040148. https://doi.org/10.20944/preprints202404.0148.v1

Abstract

This study provides a detailed investigation into the pathways through which microplastics from urban sources are transported to marine ecosystems, their distribution across different environments, and their impacts on marine life. Utilizing a combination of water and sediment sampling across urban, riverine, and marine environments, the research quantitatively assesses the concentration and types of microplastics present, and evaluates the ecological consequences of their accumulation in marine ecosystems. The findings reveal a significant concentration of microplastics in all examined environments, with the highest levels detected in urban areas, closely linked to industrial activities and inadequate waste management practices. The study documents a variety of microplastic polymers, with polyethylene (PE), polypropylene (PP), and polyethylene terephthalate (PET) being the most prevalent. A substantial impact on marine organisms was observed, including evidence of microplastic ingestion across a wide range of species and indications of stress and physical damage to coral reefs. Seasonal variations indicate that microplastic concentrations peak during periods of high rainfall, suggesting urban runoff as a critical pathway for microplastic transport. The study concludes with recommendations for improving waste management practices, enhancing public awareness and engagement in plastic recycling efforts, and implementing policies aimed at reducing the production and use of single-use plastics. This research underscores the urgent need for coordinated actions to mitigate the pervasive issue of microplastic pollution, highlighting the role of urban management and policy interventions in safeguarding marine ecosystems.

Keywords

Microplastic Pollution; Urban Sources; Marine Ecosystems; Environmental Impact; Waste Management; Riverine Transport; Polymer Types; Seasonal Variations; Ecological Consequences; Mitigation Strategies

Subject

Environmental and Earth Sciences, Environmental Science

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