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Integrated Framework for the Simulation of Biological Invasions in a Heterogeneous Landscape

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In the integrated framework presented in this article, a geographical information system serves as a shell to integrate spatial, dynamic and stochastic perspectives of biological invasions in a coherent workflow. A decision tree model stratifies the landscape with respect to spatial susceptibility and builds the spatial biophysical structure for the simulation of species invasion. A dynamic diffusion model evaluates the temporal changes of species to provide the dynamic parameters for the simulation. A simulation model derived from percolation theory simulates species invasion by combining spatial and dynamic information, and explicitly representing spatio-temporal patterns of invasions within the GIS-percolation environment. The simulation illustrates the great influence of spatial structure and connectivity of landscape on the diffusion of the species.

Document Type: Research Article


Affiliations: Department of Geography University of Maryland

Publication date: June 1, 2004


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