Detection functions practical 2
Lecture slides for 06 May 2025
Detection functions
Estimating density of duck nests
The data are the famous “ducknest” data similar to those data described by Anderson and Pospahala (1970). Data exist within the Distance package, so emphasis will be upon performing analysis rather than acquiring data.
You will do some exploratory analysis of the detection distances, then use the function ds() to fit detection functions to the data. You’ll also use the function convert_units() for properly dealing with different units of measure in the data.
The estimated detection functions will be plotted and assessed for goodness of fit.