A Computer System for Mark-Recapture Analysis of Open Populations

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Abstract
A computer system is described for mark-recapture data obtained from animal populations subject to dilution (new additions) and losses, and where marked animals are individually identifiable and classified according to various attributes (age, sex, species, etc.). The system edits and displays the data, provides general statistics-gathering capabilities, and provides a comprehensive set of analyses based on the Jolly-Seber models. The analyses include pooling methods to increase precision by combining information among sample times. A general capability for splitting off subgroups of attribute classes, sample times, or both, is provided. A simulation capability that can help in planning experiments and exploring sources of bias is provided.

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