Author Contributions:
HF Cooper collected trait data, performed genetic and statistical
analyses, and wrote much of the manuscript. RJ Best contributed to the
development of the QST plasticity calculation and helped
with the theoretical development of the paper and writing. She, JPM
Corbin, and IJ Garthwaite also assisted with some field collections and
sample processing. LV Andrews helped with RADseq processing. GJ Allan,
CA Gehring, KR Hultine, KR Grady, and TG Whitham, designed the common
garden experiment. All authors provided critical edits to the manuscript
and figures.