Figure 4

The effects of changes in the arrangement of species dominance within different evenness levels (J^1.00, J^0.92, J^0.64, J^0.42; Figure S1) on water column nutrient concentration (mg L⁻¹, mean ± s.d., n = 5) for (a) [NH₄-N] and (b) [NO_x-N]. Nutrient concentrations observed in the absence of macrofauna are shown for comparison, but were not included in the statistical analyses. The sequence of species dominance (vertically, from most to least; horizontally, equal dominance) is indicated on the x-axis. Species are represented graphically, and are indicated at J^1.00 by abbreviation: HD = Hediste diversicolor, HU = Hydrobia ulvae, CV = Corophium volutator.