Additional file 1.

Means and Tukey groups per species group for all measured traits and tested experimental conditions. For a given trait different letters on the same column indicate significant differences amongst species groups for a combination of light, fertilisation and disturbance (Tukey test). Species are grouped by strategy: the invasive species is Acer negundo. Native early-successional species are Salix alba and Populus nigra, and native late-successional species are Fraxinus excelsior and Fraxinus angustifolia. Traits are RGRh relative height growth rate (mm. mm-1.d-1.10-3), RSR root shoot ratio (g. g-1), TLA total leaf area (m2), SLA specific leaf area (m2. kg-1), LWR leaf weight ratio (g. g-1), Amax light-saturated assimilation rate (μmol CO2. m-2. s-1), Nm nitrogen content (%), Na leaf nitrogen content (g. m-2)and PNUE photosynthetic nitrogen use efficiency (μmol CO2. g-1N. s-1). Environmental conditions are: Fertilised (N+), Non-fertilised (N-), Disturbed (D), Non-disturbed (ND), Full light (C), Shade (S) and Deep shade (SS).

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Porté et al. BMC Ecology 2011 11:28   doi:10.1186/1472-6785-11-28