Figure 2. Interactive effects of CO₂ and N on mean plant phenotype in native and introduced Phragmites demonstrating the phenotypic plasticity of the introduced type as the “Jack and Master” invader in A: total biomass, B: ramet density, C: stem mass fraction (SMF), D: aboveground biomass, E: leaf area, F: leaf mass fraction (LMF), G: belowground biomass, H: root mass, I: root mass fraction (RMF), J: belowground∶aboveground (BG∶AG), K: rhizome mass, L: rhizome mass fraction (RMF), M leaf C∶N, N: specific leaf area (SLA), O, leaf area ration (LAR).

Significant G×CO₂ or G×N interactions are noted in each panel.