Evolutionary Position and Leaf Toughness Control Chemical Transformation of Litter, and Drought Reinforces This Control: Evidence from a Common Garden Experiment across 48 Species.

Phylogenetic signals of initial leaf toughness, initial litter chemical traits and changes of litter chemical traits during decomposition under different environmental conditions There was a marginally significant phylogenetic signal in the initial leaf toughness ( Fig 1 : K = 0.46, P = 0.06), and a significant phylogenetic signal was also found in 5 out of 10 initial chemical traits, i.e. for [C], [N], [S], [K] and [Ca] ( Table 2 , P < 0.05); but not for [P], [Mg], [Mn], [Fe] and [Zn] ( Table 1 , P ≥ 0.19).

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