. The Canadian field-naturalist. y = 0,0170/[1+()-"2»^] adj. r^ = P < -I—mimiiin)' 0 10 20 30 40 50 60 Tree age Figure 2: Average cumulative dbh growth (A) and average cumulative basal area growth (B) for each of the two infec- tion groups. Dashed lines represent predicted growth up to year 60 for the infection groups, based on the 3-parameter logistic regression models depicted. Vertical bars represent standard errors of the mean. The black dashed line and empty circles indicates the low infection group, and the dark grey dashed line and empty triangles indi
. The Canadian field-naturalist. y = 0,0170/[1+()-"2»^] adj. r^ = P < -I—mimiiin)' 0 10 20 30 40 50 60 Tree age Figure 2: Average cumulative dbh growth (A) and average cumulative basal area growth (B) for each of the two infec- tion groups. Dashed lines represent predicted growth up to year 60 for the infection groups, based on the 3-parameter logistic regression models depicted. Vertical bars represent standard errors of the mean. The black dashed line and empty circles indicates the low infection group, and the dark grey dashed line and empty triangles indicates the high infection group. '(D X CO E 16 14 12 10 8 6 4 2 0 A) y = 18 4039/(1+(x/30 4334)""') ad) r' = 0 97 P < 0 0001 - — ^ m^ S^' #i' .^ y = [1+()(/259869)"'°^ adj. r= = P < _a^ B) y = [1+()-'"'^ adj. i' = P< / / —eeeoociijooBoy^^. y = [1+(x/38 4295)-^ ""] adj. r^ = P<0 0001 10 20 30 40 Tree age 50 60 Figure 3: Average cumulative height growth (A) and average cumulative volume growth (B) for each of the two infection groups. Dashed lines represent predicted growth up to year 60 for the infection groups, based on the 3-parameter logis- tic regression models depicted. Vertical bars represent stan- dard errors of the mean. The black dashed line and empty circles indicates the low infection group, and the dark grey dashed line and empty triangles indicates the high infec- tion group. only after the Wilcoxon signed-rank test. It should be noted that in a logistic regression, there is an inverse relationship between the growth constant and the actual growth rate. The significantly lower growth constant observed in the high infection group indicates a faster rate of growth. No significant difference in the growth rate for height was observed. However, all four cumu- lative growth variables of the high infection group reached
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