Attenuation in detection and its consequences for occupancy when detection depends on abundance.

<p>The first panel shows the distributions of the detection probabilities (with means represented by a circle) for each value of years since planting. The solid blue curve is the fitted logistic detection component when and the dashed blue curve is the fitted constant detection probability when . The solid green curve is the fitted logistic detection component when and the dashed green curve is the fitted constant detection probability when . The solid brown curve is the fitted logistic detection component and the dashed brown curve is the fitted constant detection probability when (and either or ). The pink and orange dashed line represents (i.e. ignoring non-detection). The second panel shows the corresponding fitted logistic occupancy probabilities in the same pattern and colour combinations. Note that orange dashed curve (slightly below the dashed blue curve) is the fitted logistic detection component when and the pink dashed curve (which coincides with the dashed green curve) is the fitted logistic detection component when .