ABSTRACT
Distance sampling and capture-recapture methods have been widely used to estimate density and abundance of wildlife populations. We propose a population estimator for a mark-resighting study where in the resighting stage perpendicular distance data is recorded. In this situation, one can analyze the collected data as a capture-recapture study, as a line transect study or develop a combined model that allows us to estimate the probability of seeing an animal (or an object) on the transect line (i.e., g(0)) and to test whether or not that probability is one (g(0) = 1). A simulation study is carried out to evaluate the performance of the proposed estimator, and compare its efficiency relative to that of the Lincoln-Petersen, the Chapman and the traditional line transect estimators. An example based on some stake data is presented to illustrate the estimation procedure.
