Fig. 2.
Concentrations of elements (mg kg−1) in earthworms collected from the field (n = 9) as a function of the concentrations of the elements observed in earthworms (n = 5) in an experimental mesocosm study (Tuovinen et al. 2016a). Solid line represents linear regression between the concentrations measured in the field and the mesocosm studies (Slope = 1.02; 95% confidence interval 0.96–1.08; R2 = 0.97). The values for Be, Bi and Sb are not shown as their concentrations in the field-collected animals were below the detection limit