Two research communities have developed more-or-less independently: the community of agent-based modelers of spatial systems on the one hand, and the community interested in the representational and computational aspects of complex dynamic systems on the other. As part of the joint US National Science Foundation / UK Economic and Social Research Council Special Activity in the Area of E-Science, the University of California, Santa Barbara and University College London organized a meeting to explore the linking of the agent modeling and dynamic systems research communities. The workshop combined presentations with plenary and small-group discussions. The pre-meeting position papers of parrticipants are available in this documen