Figure 2.

Boxplot of leaf area (LA), leaf dry matter content (LDMC), specific leaf area (SLA) and leaf nitrogen content (LNC) of hydrophyte growth‐forms. Alien and native species plotted separately. Values are log‐transformed. Notations: N‐native; A‐alien. Whiskers are standard deviations. Different letters mean significant differences between alien (red box) and native (open box) species obtained by linear mixed model, where traits and nativeness were incorporated with growth‐form, environmental variables, spatiality, and species identity into one model