Agent-Based Facilitation of Water Allocation: Case Study in the Drome River Valley
Résumé
The purpose of the 1992 French Water Act is to encourage negotiation and dialogue among local stakeholders
within a framework which is very similar to a patrimonial approach. Potential use of models in such post-normal
approaches is analyzed. Two kinds of models are compared: one is agent-based, the other follows a more classical
approach. They are compared according to their contributions as negotiation support tools. This comparison
is based on a specific collective decision process dealing with water allocation at the sub-basin scale, in which
authors are involved. Both are used to support collective decision processes through simulation of resource use
dynamics. Agent-Based Models entail the broadening of spatial information of actors in the process, revealing
inter-connected topics not taken into consideration earlier. This makes it possible to remain relevant, despite the
sometimes rapidly evolving stakes. The central point of this paper is the implementation, within a practical application,
of theories advocating the use of ABM as a collective decision support system. This application promotes
a better understanding of the kind of support ABM provides and the way it does so. This is brought
about more by re-framing the discussion and modifying the representation of the system on the part of the
stakeholders than by providing specific agreements.
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