27 October ~ A. Diana “A Polya Tree based model for counts of unmarked individuals in an open population”

In this talk we present a Bayesian nonparametric model for count data in an animal population with size not assumed to be constant since individuals can arrive and depart from the site during the sampling period. A nonparametric prior known as Polya Tree is 
used for modelling the bivariate density of arrival and departure times.  We apply the model to a population of Great Crested Newts collected in a local site from the Durrell Institute of Conservation and Ecology.