Fig. 2: Impact of growing season length (GSL) on the timing of growth and senescence.
From: Growth of alpine grassland will start and stop earlier under climate warming
Soil temperature and growth parameters with different growing season length, experimentally advanced in climate chambers (+4 m, +2 m, in 2021) and compared to field plots (2020, 2021). Day of the year is specified for the first day of each month below the x axis of A. GSL is indicated for each group at the top of A (dotted line during snowmelt). All growth data were scaled to 0–100% to ease comparison. A Daily mean soil temperature at 3–4 cm depth, close to the plants’ meristems. B Green leaf length of Carex curvula. C Canopy greenness of the whole plant community (2021). Dashed, vertical lines show the mean date for the peak. D Seasonal gain in root area per unit image area (mm2 cm−2, scaled to percent). Points indicate raw data and lines are GAM smoothers in B–D (lines: mean, error band: 95% confidence interval).
