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. 2015 Apr 27;6:273. doi: 10.3389/fpls.2015.00273

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Copyright © 2015 Keser, Visser, Dawson, Song, Yu, Fischer, Dong and van Kleunen.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Modeled means of (A) root length, (B) root diameter, (C) root biomass, and (D) the specific root length of invasive (filled symbols) and non-invasive (open symbols) plant species in the high-nutrient pot quarter and the opposing low-nutrient quarter. Please note the cut y-axes. Error bars indicate the modeled standard errors for the effects of invasiveness (I), the nutrient patch (P), and the interaction between the two (I^*P). Significant effects are presented as follows: 0.05 < p < 0.1 (.), 0.01 < p < 0.05 (^*), 0.001 < p < 0.01 (^**), p < 0.001 (^***).