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Box plots of estimation accuracy on simulated data. Shown are 
ratios between the estimated species richness and the true species richness for different subsampling rates (panels), combined over all population models. If the prediction is correct, 
(red horizontal line). If 
, the estimator overestimates the true richness and if 
, the estimator underestimates the true richness. Failures and outliers (using 
; see Fig. 3) are not included in this data.
