marginally significantP = 0.08
Leaf epiphytic methanotroph RA was excluded as a predictor of leaf fluxes to maintain parsimony, although it was marginally significant (β = −0.39, P = 0.08) in a more complex model (χ 2 = 8.5, P = 0.39) that included this path and its covariance with endophytic methanotroph RA (β = 0.73, P < 0.01).