Acknowledgments:

NSF Grant #0346832
" Karyotype Dynamics and Automixis in Microbotryum"
Spring 2004-2007

NSF Grant
"Spatial Dynamics and Fluctuations at Population Margins"
2004-2006

Research:
Life on the edge: spatial dynamics of limits to population distribution -- We are using individual-based cellular automata models as well as analysis of dynamics of non-equilibrium systems to understand patterns that form at the margins of populations. Migration, birth, and death processes give patterns that are different from diffusion, and these patterns depend on whether populations are advancing or retreating. We are also investigating population structures that emerge as epidemics spread towards population margins. For a larger version of the above illustration and information about the system it models, visit Tim Newman's web pages at University of Virginia or Arizona State University.