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Related Experiment Video

Updated: Nov 28, 2025

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Protocol for Microplastics Sampling on the Sea Surface and Sample Analysis

Published on: December 16, 2016

Risks of floating microplastic in the global ocean.

G Everaert¹, M De Rijcke¹, B Lonneville¹

¹Flanders Marine Institute, Ostend, Belgium.

Environmental Pollution (Barking, Essex : 1987)

|December 1, 2020

Summary

This summary is machine-generated.

Marine microplastic (MP) poses a growing ecological risk. Ambient MP concentrations threaten marine life, with hotspots in the Mediterranean and Yellow Seas, and risks projected to increase by 2100.

Keywords:

Environmental risk assessment Marine ecosystems Microplastic Multidecadal Spatial distribution

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Area of Science:

Environmental Science
Marine Biology
Ecotoxicology

Background:

Microplastic (MP) pollution is widespread in marine environments.
The ecological risks of MP are not well understood.
Floating MP particles range from 1 micrometer to 5 millimeters.

Purpose of the Study:

Assess the ecological risk of floating MP in marine ecosystems.
Compare current MP concentrations with ecotoxicity data.
Project future MP risks based on plastic discharge scenarios.

Main Methods:

Utilized species sensitivity distribution with 23 species-specific effect thresholds.
Calculated median unacceptable MP concentration: 1.21 × 10^5 MP m⁻³.
Compared ambient MP concentrations to effect thresholds for risk assessment.

Main Results:

In 2010, 0.17% of the global ocean surface layer (0-5m) faced a threatening MP risk.
Projected risk increases to 0.52% by 2050 and 1.62% by 2100 under worst-case discharge.
Identified Mediterranean Sea and Yellow Sea as current and future MP risk hotspots.

Conclusions:

Microplastic pollution presents a significant and increasing risk to marine ecosystems globally.
Risk levels exhibit spatial and temporal variability, with specific regions facing higher threats.
Urgent mitigation strategies are needed to address the escalating marine microplastic crisis.