RANDOM COPYING IN SPACE

Richard A. Blythe ()
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Richard A. Blythe: SUPA, School of Physics and Astronomy, University of Edinburgh, Mayfield Road, Edinburgh EH9 3JZ, United Kingdom

Advances in Complex Systems (ACS), 2012, vol. 15, issue 01n02, 1-26

Abstract: Random copying is a simple model for population dynamics in the absence of selection, and has been applied to both biological and cultural evolution. In this work, we investigate the effect that spatial structure has on the dynamics. We focus in particular on how a measure of the diversity in the population changes over time. We show that even when the vast majority of a population's history may be well-described by a spatially-unstructured model, spatial structure may nevertheless affect the expected level of diversity seen at a local scale. We demonstrate this phenomenon explicitly by examining the random copying process on small-world networks, and use our results to comment on the use of simple random-copying models in an empirical context.

Keywords: Evolution; neutral theory; voter model; network; random walk; coalescent (search for similar items in EconPapers)
Date: 2012
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Persistent link: https://EconPapers.repec.org/RePEc:wsi:acsxxx:v:15:y:2012:i:01n02:n:s0219525911003396

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DOI: 10.1142/S0219525911003396

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