Fig. 4

Larval mortality following the 7-day exposure. Mortality is presented as percent mortality in a replicate (n = 7) for all exposure groups (a = 5, N = 35). The boxes display the 25%- and 75%-quartile, dark lines the median, and the whiskers extend to one and a half times the interquartile range. Striped boxes represent the sediment treatment groups; white circles represent outliers. The asterisk indicates evidence for increased mortality in the treatment group compared to the control with p < 0.05 for (*), based on Tukey HSD results