4.3.2.2 Settler size
Radial length at settlement was significantly affected by copper level, initial density, rudiment size, and proportion of normal larvae (Table 4.7a). Conditional R2 was 40%,with most of the variation explained by heterogeneity across containers (random term) followed by (in decreasing order of contribution): rudiment size, copper level,proportion of normal larvae and initial density. Settler radial length was significantly higher than controls only at the High Pulse level (Coefficient contrasts: p = 0.02;Figure 4.6a). However, the difference was very small, with an average of 559 μm at the High Pulse level compared with 549 μm in the controls.