Manhattan distances between actual whole-plot RLD (cm cm-3) and estimated RLD (cm cm-3) from individual and combined soil coring locations for simulated shallow and deep RSA phenotypes. Dots represent the mean and bars represent the standard deviation. Only the best combinations of cores are displayed. The three combinations of coring locations with the lowest Manhattan distance are displayed for each category (combination of 2, 3, 4, and 5 core locations). One hundred replications of each location by species combination were taken.