Cross-Shore Microplastic Accumulation on Sri Lanka’s West Coast One Year After the Catastrophic X-Press Pearl Pollution Event
Abstract
1. Introduction
2. Materials and Methods
2.1. Sampling Sites
2.2. Sampling Strategy
2.3. Microplastics Separation, Quantification, and Statistical Analysis
3. Results
3.1. Pellets as a Proportion of Surface Beach Plastic Debris
3.2. Three-Dimensional Pellet Accumulation in Sediments
4. Discussion
4.1. Pellets as a Proportion of Surface Beach Plastic Debris
4.2. Assessment of Pellet Integration into Sediment Profile
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Sampling Site | Tidal Height | Pellet Density | Mean % Burnt | |
---|---|---|---|---|
(m2 ± SEM) | ||||
S1. Waikkala Beach a | Low a | 0.3 ± 0.6 | 0 | |
High a | 54.3 ± 46.3 | 1 | ||
Backshore a | 1 ± 1 | 0 | ||
S2. Dungalpitiya Beach a | Low a | 0 ± 0 | 0 | |
High b | 355 ± 241.2 | 3 | ||
Backshore ab | 6.7 ± 8.1 | 0 | ||
S3. Uswetakeiyawa Beach a | Low a | 0.3 ± 0.6 | 0 | |
High a | 7.3 ± 5 | 0 | ||
Backshore a | 0.7 ± 1.2 | 0 | ||
S4. Wellawatte Beach b | Low a | 37.3 ± 32.5 | 14 | |
High b | 1408.3 ± 544.5 | 0 | ||
Backshore a | 320 ± 229.9 | 9 | ||
S5. Panadura Beach a | Low a | 2 ± 2 | 0 | |
High b | 11 ± 1 | 0 | ||
Backshore a | 0.7 ± 0.6 | 0 | ||
Source | df | Mean Square | F | Sig. |
Site | 4 | 569,832.89 | 20.81 | <0.001 |
Height | 2 | 558,018.60 | 20.38 | <0.001 |
Site × Height | 8 | 285,177.91 | 10.41 | <0.001 |
Error | 30 | 27,384.67 | ||
Total | 45 |
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Lillo, P.M.; Udagedara, S.; Williamson, R.; Gorman, D. Cross-Shore Microplastic Accumulation on Sri Lanka’s West Coast One Year After the Catastrophic X-Press Pearl Pollution Event. Microplastics 2025, 4, 37. https://doi.org/10.3390/microplastics4030037
Lillo PM, Udagedara S, Williamson R, Gorman D. Cross-Shore Microplastic Accumulation on Sri Lanka’s West Coast One Year After the Catastrophic X-Press Pearl Pollution Event. Microplastics. 2025; 4(3):37. https://doi.org/10.3390/microplastics4030037
Chicago/Turabian StyleLillo, Paula Masiá, Susantha Udagedara, Ross Williamson, and Daniel Gorman. 2025. "Cross-Shore Microplastic Accumulation on Sri Lanka’s West Coast One Year After the Catastrophic X-Press Pearl Pollution Event" Microplastics 4, no. 3: 37. https://doi.org/10.3390/microplastics4030037
APA StyleLillo, P. M., Udagedara, S., Williamson, R., & Gorman, D. (2025). Cross-Shore Microplastic Accumulation on Sri Lanka’s West Coast One Year After the Catastrophic X-Press Pearl Pollution Event. Microplastics, 4(3), 37. https://doi.org/10.3390/microplastics4030037