ESTIMATING POPULATION SIZE FROM MULTIPLE DETECTIONS WITH NON-INVASIVE GENETIC DATA

摘要: Non-invasive samples of animal dung are being collected for use with DNA-based capture–recapture analysis to estimate the abundance species. A typical sampling strategy involves repeated transects or grids search dung. Searches performed on different occasions often considered capture sessions capture– recapture analysis. It is possible that multiple from same individual found within an occasion. Most current models do not account this additional data. We present a generalization geographically and demographically closed population numbers each during occasion help heterogeneity in probability. demonstrate face caused by unequal amounts available per individual, estimator developed here out performs standard estimation. The allows benefit using all data while adding costs study. example dung-based African elephants method.