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SEEC Stats Toolbox: Time-to-first detection occupancy models

August 20 1:00 pm - 2:00 pm SAST

Join the University of Cape Town’s SEEC Stats Toolbox seminar, where host Dominic Henry will introduce time-to-first detection occupancy models.

The Centre for Statistics in Ecology, the Environment and Conservation (SEEC) is an inter-departmental grouping based at University of Cape Town. The SEEC Stats Toolbox Seminars, held once a month, introduce participants a stats method relevant to the fields of ecology, environmental science and conservation.

Summary of the talk: Traditional occupancy models that record detection/non-detection of a species typically rely on either spatial or temporal survey replication to estimate model parameters. Recording the time until a species is first encountered after starting a survey is often possible with little extra effort and data from such time-to-detection (TTD) surveys can in some cases be used to estimate occupancy and detection parameters using a single TTD survey. This presents clear benefits in terms of reducing logistical costs by conducting fewer surveys.

This talk will introduce a single season TTD occupancy model and illustrate how it can be used to estimate occupancy and detection using multi-species data within a Bayesian framework (with the NIMBLE R package). It will also show how the outputs from this TTD model can be processed to create useful plots of model parameters and covariate relationships.

More info:


August 20
1:00 pm - 2:00 pm SAST
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