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gcb2669-sup-0001-FigureS1.docxWord document270KFigure S1. Properties of the inventory plotted against time (a) total sample size (b) mean stand age (c) mean site index. The measurement period was set as 1959–1998 to include years with at least 200 plots.
gcb2669-sup-0002-FigureS2.docxWord document270KFigure S2. Relative growth enhancement above pre-industrial levels according to ‘biotic growth factors' of (β) of 0.53, 0.79 and 1.05, representing lower, mid, and upper range of values derived from enrichment/ambient growth ratios reported in the literature.
gcb2669-sup-0003-FigureS3.docxWord document270KFigure S3. Analysis of (observed minus predicted) residuals (Mg C ha−1 yr−1) derived from four different models fitted to stand-level periodic annual net stemwood production (∆B) in stands dominated by coastal Douglas-fir or western hemlock. Models were fitted separately for each species and then merged here. Models were driven with various combinations of intrinsic factors: stand age (A), stand density (N), site index (SI), and average stemwood biomass (B). Each symbol marks one of nine sample quatiles.
gcb2669-sup-0004-FigureS4.docxWord document270KFigure S4. Analysis of (observed minus predicted) residuals (Mg C ha−1 yr−1) derived from four different models fitted to stand-level periodic annual stemwood growth (G) in stands dominated by coastal Douglas-fir or western hemlock. Models were fitted separately for each species and then merged here. Models were driven with various combinations of intrinsic factors: stand age (A), stand density (N), site index (SI), and average stemwood biomass (B). Each symbol marks one of nine sample quatiles.
gcb2669-sup-0005-TableS1.docxWord document270KTable S1. Calibration statistics for models fitted to stand-level periodic annual stemwood growth (G) for stands dominated by coastal Douglas-fir (sample size = 2562 census intervals) and western hemlock (sample size = 2677 census intervals) based on intrinsic factors: stand age (A), stand density (N), site index (SI), and average stemwood biomass (B). Statistics: mean error, E (Mg C ha−1 yr−1); root mean squared error, RMSE (Mg C ha−1 yr−1), coefficient of determination, R2; Akaike's Information Criterion, AIC.
gcb2669-sup-0006-TableS2.docxWord document270KTable S2. Trends in age-detrended (model f(A)a) net stemwood production (ΔB) and stemwood growth (G) for plots of Douglas-fir and western hemlock in southwest British Columbia, Canada. Values indicate the absolute change in each flux over the 40-year period, 1959–1998. Values express the mean (± 95% CI) of the slope coefficient multiplied over the 40-year analysis period in absolute units and as percentages of the mean measurement-period flux. Field significance at the 95% confidence level is indicated by an asterisk.

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