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. 2011 Dec 20;6(12):e28645. doi: 10.1371/journal.pone.0028645

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Worthington Wilmer et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Temporal assignment of individuals to K = 2 inferred clusters from the STRUCTURE analysis across all historical and contemporary snail samples within each of the five study springs. Grey indicates pre flood years (1988–1990) and white post flood years (1995, 2002–2006).