Table 2 Results from ANOVA for simplified composites derived from discriminant function/MANOVA analysis from 2 to 32 years post-MPB epidemic initiation in south-central Oregon, USA. PROD = productivity class; MORT = level of MPB mortality.^aSurface fuels composite 1 is composed of the variables: 100-h fuel load, 1000-h fuel load, and fuel bed depth^bSurface fuels composite 2 is composed of the variables: 10-h fuel load, 100-h fuel load, 1000-h fuel load, and fuel bed depth^*Indicates a statistically significant difference between TSB stages or a statistically significant effect of a covariate (Bonferroni adjusted α = 0.008)^cCrown fuels composite 1 is composed of the variables: dead basal area, live basal area, and overstory canopy closure^dCrown fuels composite 2 is composed of the variables: live basal area, canopy bulk density, and canopy base height

Surface fuels composite 1 ^a

F-value

P -value

Surface fuels composite 2 ^b

F-value

P -value

Stage

40.46

≤0.001^*

Stage

5.82

≤0.001^*

PROD

1.48

0.230

PROD

0.11

0.895

MORT

2.07

0.129

MORT

0.09

0.914

TSB1 vs TSB2

0.189

TSB1 vs TSB2

0.011

TSB1 vs TSB3

≤0.001^*

TSB1 vs TSB3

0.286

TSB1 vs TSB4

≤0.001^*

TSB1 vs TSB4

0.440

TSB2 vs TSB3

≤0.001^*

TSB2 vs TSB3

≤0.001^*

TSB2 vs TSB4

≤0.001^*

TSB2 vs TSB4

0.030

TSB3 vs TSB4

0.102

TSB3 vs TSB4

0.037

Crown fuels composite 1 ^c

F-value

P -value

Crown fuels composite 2 ^d

F-value

P -value

Stage

66.57

≤0.001^*

Stage

23.35

≤0.001^*

PROD

0.97

0.381

PROD

4.31

0.015

MORT

1.42

0.244

MORT

1.83

0.163

TSB1 vs TSB2

0.580

TSB1 vs TSB2

≤0.001^*

TSB1 vs TSB3

≤0.001^*

TSB1 vs TSB3

0.157

TSB1 vs TSB4

≤0.001^*

TSB1 vs TSB4

0.466

TSB2 vs TSB3

≤0.001^*

TSB2 vs TSB3

≤0.001^*

TSB2 vs TSB4

≤0.001^*

TSB2 vs TSB4

≤0.001^*

TSB3 vs TSB4

≤0.001^*

TSB3 vs TSB4

0.02