Response

Component

Parameter

Coefficient

s.e.

d.f.

t

Pr > |t|

lnNB

Fixed effects

Intercept (β0)

−0.1560

0.3471

9

−0.45

<0.0001

lnMainLength (β1)

0.5686

0.09658

183

5.89

<0.0001

No. groups

Estimate

s.e.

Random effect

Tree

12

0.1617

0.1095

Residual

1.9601

0.2027

Model

n = 195

Response

Component

Parameter

Coefficient

s.e.

d.f.

t

Pr>|t|

lnBD

Fixed effects

Intercept (β0)

0.3663

0.01140

9

−12.87

<0.0001

lnMainDiam (β1)

−0.1283

0.01276

367

14.77

<0.0001

No. groups

Estimate

s.e.

Random effect

Tree

12

0.00184

0.00037

Residual

0.00784

0.00057

Model

n = 379