Quantifying Unequal Catchability and its Effect on Survival Estimates in an Actual Population

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Abstract
Simulation models, in combination with a test of equal catchability, were used to quantify the effect of heterogeneity of catchability on survival estimates obtained by capture-recapture methods from an actual population [animal]. The biases in the estimates were negligible although the test revealed a considerable degree of heterogeneity. The use of such tests to determine the appropriateness of particular estimation models to actual data may be highly misleading. Simulation may often be a useful and relatively inexpensive method for expoloring alternative models.

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