NetLogo User Community Models
by George Kampis and Istvan Karsai (Submitted: 08/03/2010)
WHAT IS IT?
This model explores the stability of predator-prey ecosystems with fragmented habitats.
HOW TO USE IT
The general rule: proceed left to right, top to bottom. Never go backwards or things might crash.
1 - init (clear all), set movie and file switch (to produce "out.mov" and "out.txt", respectively)
THINGS TO NOTICE
With increasing predator quality ("wolf gain") spatial waves can form. High densitiy waves typically lead to extinction of prey and then predator. Howwever, introducing barriers and connectors improves coexistence.
THINGS TO TRY
Try different framgentation schemes with different number of boxes and doors.
EXTENDING THE MODEL
There are many possibilities, the most obvious being the introduction of different migration speed (and different life cycle) for predator and prey.
CREDITS AND REFERENCES
George Kampis and Istvan Karsai 2010: Breaking Waves in Population Flows, in: Kampis, G, Szathmary, E., Karsai, I, Jordan, F. (eds): Darwin Meets von Neumann. Proceedings of the 10th European Conference on Artificial Life, Springer, in press.
Istvan Karsai and George Kampis 2010: Connected Fragmented Habitats Facilitate Coexistence, submitted.
Wilensky, U. (1998). NetLogo Wolf Sheep Predation model. http://ccl.northwestern.edu/netlogo/models/WolfSheepPredation. Center for Connected Learning and Computer-Based Modeling, Northwestern University, Evanston, IL.
(back to the NetLogo User Community Models)