Figure 3: Population means (+/- 1SE) for (a) leaf traits and (b) growth traits measured in each garden as well as the population mean trait plasticity values, regressed onto their home climate (indicated by principal component axis 1 values). Populations are colored by mean annual temperature (MAT °C). Regression lines are present when there is a significant relationship (p < 0.05) between the PC1 axis and the trait. SLA is in unit of mm2/mg. Note the scale on the y-axis for the plasticity regressions are different than the trait regressions.