Fig. 2. Distribution of (a) U and (b) Ni in whole, sand, and water-dispersible silt and clay fractions of SP2B1 (12.7 g kg^-1 sediment organic carbon [SOC]) and SP5B1 (82.2 g kg^-1 SOC). Error bars are one standard deviation (n = 3). Significantly different means ( = 0.05) are distinguished by lowercase letters for SP2B1 distributions as determined by one-way analysis of variance and post hoc mean comparisons using Tukey and Scheffe tests. Uranium and nickel distributions in SP5B1 are not significantly different among the four size fractions. Legend applies to both graphs.