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The percentage of microplastic (a) fibers, (b) fragments of different size classes (0.01–0.20 mm, 0.21–1.00 mm, 1.01–5.00 mm), and mesoplastic (5.01–25 mm) from the surface water of the studied tundra lakes. The distance (in km) from the field station is shown by the arrows at the bottom of the graphs. Statistically significant differences are indicated by * p < 0.05 and ** p < 0.005.
