A Coupled Map Lattice Model of Tree Migration
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چکیده
We model tree migration with a coupled map lattice and study the dynamics of the moving front. We show that when the maximal dispersal distance is finite and the spatial redistribution pattern remains unchanged in time, the moving front will always approach an asymptotic state: a travelling wave. We also show that when the climate becomes more favorable to growth or germination, the front at any nonzero density level will have a positive acceleration. Our analysis of the model suggests that acceleration in migration happens only when the seed dispersion pattern changes.
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تاریخ انتشار 2006