Summary of general linear models (GLM) of stomatal density (SD) and stomatal length (SL).

†<p>PFT, plant functional type; , CO₂ partial pressure; MAP, mean annual precipitation; SWC, soil water content;</p>‡<p>DF, degrees of freedom; MS, mean squares; SS%, percentage of sum of squares explained.</p><p>*, <i>P</i><0.05; **, <i>P</i><0.01.</p><p>Summary of general linear models (GLM) of stomatal density (SD) and stomatal length (SL).