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Appendix S1 Model method comparisons and additional simulation model performance metrics.

Figure SA1 Boxplots comparing the performance of generalized additive models (GAM), generalized linear models with only linear terms (Linear) and generalized linear models with quadratic terms (Quadratic) for 16 species at two sites. Species are abbreviated by the first two letters of their genus and first two letters of their species (see Table 5 for full species names). The top eight species are from the Idaho National Laboratories and the bottom eight species are from Yellowstone National Park.

Figure S2 Empirical 95% data interval boundaries of commission error (calculated at the threshold that maximizing sensitivity and specificity) for each plant distribution pattern as a function of sample size in the simulation study. Distribution boundaries were calculated from 50 replicates at each sample size. The four survey methods were– Simple Random Sample (green triangles), Stratified Random Sample (purple plusses), Transects (blue squares) and Rectangular Clusters (red circles).

Figure S3 Empirical 95% data interval boundaries of omission error (calculated at the threshold that maximizing sensitivity and specificity) for each plant distribution pattern as a function of sample size in the simulation study. Distribution boundaries were calculated from 50 replicates at each sample size. The four survey methods were– Simple Random Sample (green triangles), Stratified Random Sample (purple plusses), Transects (blue squares) and Rectangular Clusters (red circles).

Figure S4 Empirical 95% data interval boundaries of the logarithm of the residuals between the known probability of occurrence and the predicted probability of occurrence from sample data for each plant distribution pattern as a function of sample size in the simulation study. Distribution boundaries were calculated from 50 replicates at each sample size. The four survey methods were– Simple Random Sample (green triangles), Stratified Random Sample (purple plusses), Transects (blue squares) and Rectangular Clusters (red circles).

Figure S5 Empirical 95% data interval boundaries of mean residual error for each plant distribution pattern as a function of sample size in the simulation study. Distribution boundaries were calculated from 50 replicates at each sample size. The four survey methods were– Simple Random Sample (green triangles), Stratified Random Sample (purple plusses), Transects (blue squares) and Rectangular Clusters (red circles).

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