A predation kernel where the predator/prey mass ratio is uniformly distributed on an interval.
box_pred_kernel(ppmr, ppmr_min, ppmr_max)
| ppmr | A vector of predator/prey size ratios |
|---|---|
| ppmr_min | Minimum predator/prey mass ratio |
| ppmr_max | Maximum predator/prey mass ratio |
A vector giving the value of the predation kernel at each of the
predator/prey mass ratios in the ppmr argument.
Writing the predator mass as \(w\) and the prey mass as \(w_p\), the
feeding kernel is 1 if \(w/w_p\) is between ppmr_min and
ppmr_max and zero otherwise. The parameters need to be given in the
species parameter dataframe in the columns ppmr_min and
ppmr_max.