JEQ -- Ipsilantis and Coyne 36 (3): 638 Figure IG3

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Fig. 3. Principal component analysis of BIOLOG plates data. Each point represents one replicate. Symbols: open circles ( ${circ}$ ), rhizosphere, closed circles (•), rhizosphere + Cr, open triangles ( ${triangleup}$ ), bulk soil, closed triangles ( ${blacktriangleup}$ ), bulk soil + Cr. Values in parentheses show the variation explained by the principal component.