pdk provides graphs (based on ggplot2) displaying probability density kernels (pdk) for leptokurtic fish dispersal. For each plot the fitted mean as well as the upper and the lower bound (based on confidence or prediction interval, see predict.lm) are displayed. p is the share of the stationary component in the population resp. 1-p is the share of the mobile component. An average value for p is 0.66 (66% stationary) (Radinger and Wolter, 2013).
The underlying leptokurtic density function is:
$$
F(x)=p*\frac{1}{\sqrt{2\pi\sigma_{stat}^2}}*e^{-\frac{(x-\mu)^2}{2\sigma_{stat}^2}}+(1-p)*\frac{1}{\sqrt{2\pi\sigma_{mob}^2}}*e^{-\frac{(x-\mu)^2}{2\sigma_{mob}^2}}$$