Figure 2.

Mean biomass (g/m²) of major plant functional groups for each of the treatment combinations during the four years of warming treatments in low shrub tundra, Kangerlussuaq, Greenland. Biomass was estimated by calibration of the non-destructive point-intercept method with actual plant biomass measurements. a) B. nana leaves, b) B. nana stem, c) Graminoids and d) Forbs. Black columns: ungrazed and ambient; white columns: ungrazed and warmed; light gray columns: grazed and ambient; and dark gray columns: grazed and warmed. Error bars are the SE of the means.