University of Edinburgh
School of Mathematics and BioSS
Date: Friday 17th November, 15:05, Location: JCMB 5323
Speaker: David Borchers, School of Mathematics and Statistics, University of St Andrews
Title: Spatial capture-recapture with unknown recaptures
Abstract: Capture-recapture methods estimate capture probability using the proportion of marked individuals that are recaptured. They therefore rely on knowing which individuals were recaptured. This talk will consider a capture-recapture survey in which the recaptures are unknown. The context is a two-plane aerial survey of harbour porpoise in which each plane acts as a capture occasion and from which we obtain data only on the locations and times of detected porpoise by each plane, not which individual porpoise were detected by which plane(s). I will look at two approaches to inference, one in which we consider all possible pairings of detections between the planes, the other in which a Palm likelihood approach, borrowed from spatial statistics, is used to draw inference without ever having to pair any detections between the planes or identify any recaptures. Both approaches model animal movement as a diffusion process and animal surfacing behaviour as a continuous-time Markov process.
This seminar is a part of Maxwell Institute seminar series.
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