Category Archives: dispersal

8.1 leGUME (the Grand Unified Model of Everything)

This is the model presented in Chapter 8 of the book, which combines elements from many of the building-block models discussed in earlier chapters.

You can see a fairly typical example of long-term survival of the island colonisers in the video.

Details of the model are in Chapter 8 and additional information not included in the Chapter can be found here.

Click on the image to download and save the model NetLogo file. You will need to install NetLogo to run this file.

7.1 Ruckelshaus model of dispersal

This is an implementation of the model of the relationship between dispersal and fragmentation described in

Ruckelshaus M, Hartway C and Kareiva PM 1997 Assessing the data requirements of spatially explicit dispersal models. Conservation Biology, 11, 1298-1306.

Click on the image to download and save the model NetLogo file. You will need to install NetLogo to run this file.

5.15 Eden spread from a linear front with long-distance dispersal (LDD)

This model shows how Eden spread along a front is dramatically altered by the occurrence of even relatively rare long-distance jumps. The behaviour of this model should be compared with that of the same model without such jumps.

An alternative version of the model is available, which makes use of the netlogo R extension.

Click on the image to download and save the model NetLogo file. You will need to install NetLogo including the gradient extension to run this file.

3.9 voter model with dispersal and mutation

This model implements a simple voter model with two non-local processes. One admits succession at a distance, while the other (mutation) allows the appearance of completely new states in the lattice.

Click on the image to download and save the model NetLogo file. You will need to install NetLogo to run this file.

3.8 simple voter model

This model is an implementation of a simple voter model.

The video demonstrates how regions of each original class or type develop and persist.

Click on the image to download and save the model NetLogo file. You will need to install NetLogo to run this file.

2.2 Flügge et al.’s spatial memory model

This is an implementation of the model described in

Flügge AJ, Olhede SC and Murrell D 2012 The memory of spatial patterns – changes in local abundance and aggregation in a tropical forest. Ecology 93, 1540-1549.

This model also requires this NetLogo source file to run. You should place this file in the same folder as the model .nlogo file.

An alternative version of the model is available, which makes use of the NetLogo R extension.

Click on the image to download and save the model NetLogo file. You will need to install NetLogo to run this file.