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. 2015 Oct 22;5:15622. doi: 10.1038/srep15622

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Aboveground biomass of Ageratina adenophora plants from the native (closed bars) and invasive (open bars) populations grown in monoculture (a), and changes in aboveground biomass caused by intraspecific competition (b). Narrow bars indicate means and SE for each population; two thicker bars in the center depict means and SE for each range. * indicates significant differences between ranges (P < 0.05) in aboveground biomass (one-way nested ANOVAs) and percentage change in aboveground biomass (t-test).