Prey/Predator Model
From SystemsWiki
Consider the situations between rabbits and foxes. Foxes feed on rabbits and are dependent on rabbits for their survival, though if foxes didn't feed on rabbits they would over-populate and starve. Thus, while the fox is not healthy for the rabbit, the fox is healthy for the fox/rabbit community as a whole.
While the Prey/Predator structure is a member of Boulding's Hierarchy of Systems it was actually first proposed by Alfred Lotka and Vito Volterra independently in the 1920's.
Causal Loop Diagram
Which is essentially a Limits to Growth structure evolving from the interaction of two Growth and Underinvestment structures.
References
- Diagrams created with MapSys
- Predator-Prey Dynamics
- Isle Royale Wolves and Moose
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