Fig. 1.

Above-ground biomass (A, B) and specific leaf area (C, D) of the invasive alien Impatiens glandulifera when reciprocally transplanted between alluvial deciduous forests (df/DF), fallow meadows (fm/FM) and coniferous forests (cf/CF) in the invaded range. Seed origins are indicated with capital letters, plot habitats with lower-case letters. Plots remained either untreated (A, C) or were experimentally disturbed before planting (B, D). The number of plant individuals in each group is given in small italic numbers above the boxplots.