Fig. 3

Median values (± median absolute deviation) of the bioconcentration factor (size 1: blue line, size 2: orange line; size 3: grey line) in native moss and moss bags after incubation with different concentrations of plastics items expressed as weight/volume percentage (low 0.055%, intermediate 0.11%, high 0.22%). Same letters indicate statistically homogeneous subgroups (lower case letters for item concentration data, and upper-case letters for item size data)