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Fitting and Interpreting Occupancy Models

Figure 6

Simulation results for fitting occupancy models when detection depends on abundance.

The first row shows fitted logistic curves for detection and occupancy for the first samples. The samples with positive/negative fitted relationships between occupancy and years since planting the surrounding Radiata pine are shown in blue/green; the true relationship is shown in black. The middle row shows boxplots of the fitted values for detection and occupancy for each year since planting; the true relationship is again shown as a black curve. The final row shows histograms (after trimming values with standard deviation great than ) of the estimates of the slope in the occupancy component of the model and the standard errors of these slopes; the vertical dashed lines are the true value of the slope parameter and the standard deviation of the slope estimates.

doi: https://doi.org/10.1371/journal.pone.0052015.g006