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Proc Biol Sci. 2009 Apr 22;276(1661):1527-34. doi: 10.1098/rspb.2008.1567. Epub 2009 Feb 25.

How range shifts induced by climate change affect neutral evolution.

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1
Computational Ecology and Environmental Sciences, Microsoft Research Limited, 7 JJ Thomson Avenue, Cambridge CB3 0FB, UK. gregmci@microsoft.com

Abstract

We investigate neutral evolution during range shifts in a strategic model of a metapopulation occupying a climate gradient. Using heritable, neutral markers, we track the spatio-temporal fate of lineages. Owing to iterated founder effects ('mutation surfing'), survival of lineages derived from the leading range limit is enhanced. At trailing limits, where habitat suitability decreases, survival is reduced (mutations 'wipe out'). These processes alter (i) the spatial spread of mutations, (ii) origins of persisting mutations and (iii) the generation of diversity. We show that large changes in neutral evolution can be a direct consequence of range shifting.

PMID:
19324824
PMCID:
PMC2677231
DOI:
10.1098/rspb.2008.1567
[Indexed for MEDLINE]
Free PMC Article
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