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Updated: Jan 10, 2026

Data Collection on Marine Litter Ingestion in Sea Turtles and Thresholds for Good Environmental Status
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Remote beaches as plastic hotspots: Pollution patterns and management implications.

Nelson Rangel-Buitrago1, Adriana Gracia C2

  • 1Programa de Física, Facultad de Ciencias Básicas, Universidad del Atlántico, Barranquilla, Atlántico, Colombia.

Marine Pollution Bulletin
|November 20, 2025
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Summary
This summary is machine-generated.

Remote Colombian beaches are heavily polluted with plastics, primarily from land-based sources. This plastic pollution, reaching extremely high levels, highlights the urgent need for integrated national monitoring frameworks to manage marine debris.

Keywords:
Caribbean coast of ColombiaMarine litterPlastic pollutionRemote beachesSource attribution

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Area of Science:

  • Marine Biology
  • Environmental Science
  • Oceanography

Background:

  • Remote beaches are often considered pristine but can act as sinks for marine pollution.
  • Understanding the sources and distribution of marine litter is crucial for effective conservation strategies.

Purpose of the Study:

  • To comprehensively assess marine litter and plastic pollution on eight remote beach sites in Colombia.
  • To identify the sources, typologies, and spatial distribution patterns of plastic pollution.
  • To evaluate the contamination levels using established pollution indices.

Main Methods:

  • Field surveys to document and quantify litter items.
  • Plastic typology analysis to determine item categories and origins.
  • Statistical modeling, including ordination and clustering, to analyze spatial patterns.
  • Application of the Clean Coast Index and Plastic Abundance Index.

Main Results:

  • A total of 9620 litter items were recorded, with plastics constituting 91.5%.
  • Average litter density was 60.1 items/m², with plastics at 54.99 items/m², indicating severe contamination.
  • Shoreline/recreational items and foamed plastics dominated, suggesting land-based and riverine origins.
  • All sites were classified as "Extremely Dirty" with "Very High Plastic Abundance."

Conclusions:

  • Remote Colombian beaches serve as significant passive sinks for marine plastics.
  • Plastic pollution patterns are influenced by proximity to the Magdalena River, hydrodynamics, and site morphology.
  • Integrating remote sites into national monitoring frameworks is essential for effective marine litter management.