Figure 7. A comparison of yield, fishing mortality (F), post-harvest stock size (N’) and spawning stock biomass (SSB) when random errors of the same CV are applied to both the stock size assessment (µ) and the estimated catchability parameter ().

Relative positive and negative biases applied to and µ are denoted on the x-axis. Circles denote results from F-targeted unsupervised BR and squares F-targeted supervised CR. Black symbols denote the value (left axis) and grey symbols the CV of the effect-variable (right axis).