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. 2015 Apr 10;7:plv038. doi: 10.1093/aobpla/plv038

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Published by Oxford University Press on behalf of the Annals of Botany Company.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 2. — Expansion in soil moisture conditions occupied by P. cespitosum in its introduced range. (A) Box plots (10th, 25th, 50th, 75th and 90th percentile) and means (dark line) for soil moisture (% of field capacity) at five populations representing P. cespitosum's ecological range in northeastern North America in 1994 (left) and 2009 (right). (B) The percentage of microsites by soil moisture availability in 1994 and 2009. Data from both depths and sampling dates were pooled.