Invasive plants optimize leaf nitrogen allocation in photosynthesis.

Although no pairwise differences were detected in combined photosynthetic N allocation (N P , all P > 0.3; Table S2 ), forest invaders in both their away and home ranges showed small but marginally significant increases in N L (23% and 27% compared to 19%; P = 0.0557, 0.0748, respectively; Fig. 4 ).

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One caveat is that there may be significant N pools involved in defense that are not reflected in the static N‐rich secondary metabolites we measured (alkaloids and cyanogenic glycosides).

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