Table 6 Outputs from the Bonferroni-adjusted post hoc tests for pairwise comparisons between control and severity classes of older fires (1921–1983). The “overall” category refers to a model that evaluates the five considered structure attributes together

Overall

Low:moderate

3869.426

1.229

0.061

1.000

Low:high

39288.173

18.080

0.410

0.006*

Moderate:high

8542.091

3.864

0.185

0.174

Low:control

7595.797

2.574

0.048

0.450

Moderate:control

674.214

0.215

0.005

1.000

High:control

24283.026

9.278

0.159

0.006*

Canopy cover

Low:moderate

5.291

0.046

0.002

1.000

Low:high

295.677

1.100

0.041

1.000

Moderate:high

119.919

0.396

0.023

1.000

Low:control

5.453

0.029

0.001

1.000

Moderate:control

17.224

0.094

0.002

1.000

High:control

506.037

1.975

0.039

1.000

Percent large tree basal area

Low:moderate

964.180

2.067

0.098

0.900

Low:high

7555.707

22.096

0.459

0.006*

Moderate:high

1321.102

2.781

0.141

0.690

Low:control

1191.618

2.672

0.050

0.678

Moderate:control

103.678

0.199

0.005

1.000

High:control

4865.401

10.858

0.181

0.012*

Percent medium tree basal area

Low:moderate

964.180

2.067

0.098

1.000

Low:high

7555.707

22.096

0.459

1.000

Moderate:high

1321.102

2.781

0.141

1.000

Low:control

1191.618

2.672

0.050

1.000

Moderate:control

103.678

0.199

0.005

0.984

High:control

4865.401

10.858

0.181

0.720

Large tree density

Low:moderate

2607.619

1.188

0.059

1.000

Low:high

28892.601

24.193

0.482

0.006*

Moderate:high

6484.480

6.558

0.278

0.168

Low:control

5776.369

3.064

0.057

0.594

Moderate:control

11.523

0.006

0.000

1.000

High:control

16469.671

11.327

0.188

0.018*

Total basal area

Low:moderate

209.857

0.930

0.047

1.000

Low:high

2517.234

14.025

0.350

0.012*

Moderate:high

592.557

2.774

0.140

0.636

Low:control

278.084

1.302

0.025

1.000

Moderate:control

18.956

0.081

0.002

1.000

High:control

1878.720

8.992

0.155

0.030*