Table 2 Parameter estimates of generalized linear regression for understory leafy biomass (kg ha⁻¹) in major forest types and as related to years-since-fire in growing season burned longleaf pine forests at Fort Bragg Military Installation, North Carolina, USA, in June to September, 2011 to 2012.

Intercept

4.33

0.01

580 622.56

<0.0001

Bottomland hardwood

840

1.27

0.16

64.05

<0.0001

Dormant upland pine

623

2.71

0.25

116.68

<0.0001

Growing upland pine

562

1.51

0.51

8.79

0.003

Upland hardwood^a

401

Same yr as fire

357

−2.21

0.36

37.61

<0.0001

1 yr post fire

443

−1.52

0.43

12.59

0.0004

2 yr post fire

636

1.31

0.40

10.70

0.001

3 yr post fire^a

462

Dormant upland pine*same yr as fire

396

3.15

0.19

266.21

<0.0001

Dormant upland pine*1 yr post fire

733

3.77

0.20

351.56

<0.0001

Dormant upland pine*2 yr post fire

698

3.98

0.26

243.11

<0.0001

Dormant upland pine*3 yr post fire

566

3.47

0.39

79.61

<0.0001

Growing upland pine*same year as fire

553

3.66

0.32

131.83

<0.0001

Growing upland pine*1 yr post fire

550

4.10

0.45

83.12

<0.0001

Growing upland pine*2 yr post fire

722

3.30

0.37

81.61

<0.0001

Growing upland pine*3 yr post fire

484

0.65

0.26

6.29

0.01

Upland hardwood*same year as fire^a

322

Upland hardwood*1 yr post fire^a

345

Upland hardwood *2 yr post fire^a

486

Upland hardwood*3 yr post fire^a

432