Pollock 1981; Biometrics 37: 521-529
Program CAPQUOTA is intended to aid in the design of capture-recapture and capture-resighting experiments. For specified capture probability, sighting probability, survival rate, population size and sampling design, the program outputs the coefficients of variation (c.v. = standard error of parameter estimate) expected for population size (adults only) and survival rate (young and adults) estimates based on the models of jolly (1965; Biometrika 52:225-247) and pollock (1981; Biometrics 37: 521-529). The biologist can then select the desired c.v. and obtain a good idea of the sampling effort (reflected in the magnitudes of capture probability and/or sighting probability) needed to produce this level of precision.
The following input data are needed:
| Number of sampling periods | |
| Number of periods between capture periods | |
| Adult survival rate | |
| Adult resighting probability | |
| Proportion of young/adult population size | |
| Young survival rate | |
| Proportion of young/adult capture probability | |
| Population sizes (start,fin,inc) | , , |
| Capture probabilities (start,fin,inc) | , , |
Arithmetic Mean Geometric Mean