JEQ -- Burke et al. 32 (1): 198 Figure IG2

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Fig. 2. Plot of mean soil phospholipid fatty acid (PLFA) ${delta}$ ¹³C for the upper 10 cm versus time since ecosystem conversion. Error bars are ± one standard deviation. Abbreviations, symbols, and fills the same as in Fig. 1. The equation was fit to the forest and sugarcane data only. Values of a in the equation are -13 ${per thousand}$ and -14 ${per thousand}$ for the Oxisol and Andisols trends, respectively. The numbers on the figure are values of k in the equation used to generate the Oxisol and Andisols curves.