Fay Morland: Including the invisible fraction in whole population studies: A guide to the genetic sampling of unhatched bird eggs

Throughout March and April, we are featuring articles shortlisted for the 2024 Robert May Prize. The Robert May Prize is awarded by the British Ecological Society each year for the best paper in Methods in Ecology and Evolution written by an early career author. Fay Morland’s article‘ Including the invisible fraction in whole population studies: A guide to the genetic sampling of unhatched bird eggs‘ is one … Continue reading Fay Morland: Including the invisible fraction in whole population studies: A guide to the genetic sampling of unhatched bird eggs

Harriet RhodesApril 3, 2025March 19, 2025Leave a comment

Conservation and management, Methods papers

Spatial Capture-Recapture: The Pros and Cons of Aggregating Detections

Post provided by Cyril Milleret

Spatial Capture-Recapture and Computation Time

SCR models simultaneously estimate the detection function and density of individual activity centres. A half-normal detection model is generally used.

The estimation of population size is one of the primary goals and challenges in wildlife ecology. Within the last decade and a half, a new class of tools has emerged, allowing us to estimate abundance and other key population parameters in specific areas. So-called spatial capture-recapture (SCR) models are growing in popularity not only because they can map abundance, but also because they can be fitted to data collected from a variety of monitoring methods. For example, the ever increasing use of non-invasive monitoring methods, such as camera trapping and non-invasive genetic-sampling, is one of the reason that makes SCR models so popular.

One other strengths of SCR models is the ability to make population level inferences. But the wider the region you’re monitoring, the greater the computational burden, challenging the use of such methods at really large scale. Continue reading “Spatial Capture-Recapture: The Pros and Cons of Aggregating Detections”