Species occupancy modelling for detection data collected along a transect

The proportion of sampling sites occupied by a species is a concept of interest in

tion data along transects have become increasingly popular to monitor some species.

ing the transects into discrete segments. Here we propose alternative occupancy models

vide a more natural description of the data and eliminate the need to divide transects

occupancy or increased chances of obtaining estimates on the boundary of the param-

alternative model that describes the detection process as a Markov modulated Poisson

is illustrated with the analysis of data from a recent survey of the Sumatran tiger Pan-

data in time, such as those based on the use of camera-trap devices. Supplementary ma-

terials for this article are available online.