Figures & data
FIGURE 1. Location of the study site in northern Québec
FIGURE 2. Lifespan of (a) the 30 dead stems and (b) the 30 living stems. Thicker lines correspond to lifespan of the upper part of stems (above snow cover)
FIGURE 3. Age-height relationships of living stems (black dots; y = 5.42 − 0.0032x) and dead stems (open dots; y = 2.02 + 0.0021x)
FIGURE 4. Mean years of initial development of the 30 living stems (black squares) and the 30 dead stems (black dots) at each sampled level. Shaded areas correspond to the confidence interval (95%) for each curve. Horizontal lines a and b correspond to inferred snowpack line for dead and living stems, respectively. Line c corresponds to beginning of height growth reduction. Extreme values of the mean height growth curves for living (dash lines) and dead (dotted lines) stems show the range of height growth
FIGURE 5. (a) Mean duration (+ SE), (b) mean height growth rate (+ SE) and (c) mean ring width (+ SE) of each growth stage (I, II, III) of the 30 living (white bars) and 30 dead (black bars) stems. (*) Significant difference (P < 0.001)
FIGURE 6. Tree-ring chronologies of dead (gray line) and living (black line) stems. Mean duration (± extreme values) of stage II is shown by gray line (± gray dotted line) for dead stems and black line (± black dotted line) for living stems. The number of stems used to construct the two chronologies is shown below the two curves
