Fig. 4

Representative box and whisker plot generated from the Toxicity of Microplastics Explorer database displaying the microplastic concentrations where statistically significant effects were detected (“Yes”) or not detected (“No”) as reported by the original studies for different size categories expressed as count (A) and mass (B). Both panels are represented by the same underlying data. The center line represents the median. Upper and lower hinges correspond to the first and third quartiles. Outliers (i.e., values greater than 1.5 multiplied by the interquartile range) are represented as individual data points. Text labels represent the total number of datapoints and studies, respectively. Underlying data may be found in the Supplementary Information