R.mdig.kernel

The “kernel” module simulates the rare long distance dispersal events that are inevitably seen in the spread of a dispersing population's distribution. These events are due to several factors, including inadvertent human dispersal (ref XX), seed dispersal from air plumes (ref XX), and seed dispersal along rivers (ref XX). Although it would be optimal to be model these processes individually, there is rarely sufficient data to model them separately, and in our opinion what is important is the underlying pattern of dispersal events at this scale. The module samples a Poisson distribution for the number of dispersal events each occupied cell will generate. Then, for each dispersal event, a probability distribution of dispersal distances is sampled to get the distance the propagule travels. A uniform distribution is sampled to determine the angle at which the dispersal events travels.

kernel