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Estimating Population Size for Capture-Recapture Data When Capture Probabilities Vary by Time and Individual Animal

Anne Chao, S-M Lee and S-L Jeng
Biometrics
Vol. 48, No. 1 (Mar., 1992), pp. 201-216
DOI: 10.2307/2532750
Stable URL: http://www.jstor.org/stable/2532750
Page Count: 16
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Since scans are not currently available to screen readers, please contact JSTOR User Support for access. We'll provide a PDF copy for your screen reader.
Estimating Population Size for Capture-Recapture Data When Capture Probabilities Vary by Time and Individual Animal
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Abstract

There have been no estimators of population size associated with the capture-recapture model when the capture probabilities vary by time and individual animal. This work proposes a nonparametric estimation technique that is appropriate for such a model using the idea of sample coverage, which is defined as the proportion of the total individual capture probabilities of the captured animals. A simulation study was carried out to show the performance of the proposed estimation procedure. Numerical results indicate that it generally works satisfactorily when the coefficient of variation of the individual capture probabilities is relatively large. An example is also given for illustration.

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