Fig. 2From: Carbohydrates and secondary compounds of alpine tundra shrubs in relation to experimental warmingConcentrations of flavonoids, total phenol and triterpenes in leaves of Dryas octopetala var. asiatica, Rhododendron confertissimum and Vaccinium uliginosum grown in the warming open-top chambers (black bars) and the control plots (white bars) measured during the growing season. Error bars are one standard deviation (n = 6). The effects of treatment (T) and sampling date (D) on all parameters were analyzed by two-way ANOVA. * P < 0.05, ** P < 0.01, *** P ≤ 0.001, ns P > 0.05Back to article page