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. 2012 Oct 31;7(10):e42794. doi: 10.1371/journal.pone.0042794

Figure 1. Effects of CO2 and N treatments on Phragmites biomass stimulation ± standard error (A), relative growth rate (RGR) ± standard error (B), and plant nitrogen productivity (NP) ± standard error (C).

Figure 1

Solid bars indicate native Phragmites and empty bars indicated introduced Phragmites.