Figure 2
Plastic concentration (particles/kg dry sediment) is high in the upper estuary and decreases toward the open ocean for both microplastics (a) and macroplastics (b). Variability is observed within sites when comparing samples taken in the upper beach (pink), mid-beach (orange), intertidal zone (aqua), and subaqueous zone (blue). Sediment grab samples located offshore of shoreline sites are included for comparison (navy). Red ’X’ denotes where no samples were taken. Error bars represent one standard deviation from the mean.
