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Table 8 Results of the linear mixed models to test the effect of latitude, time since fire, and year of study on the shade tolerance of post-fire regeneration density

From: Post-fire forest recovery at high latitudes: tree regeneration dominated by fire-adapted, early-seral species increases with latitude

Effect

Group

Term

Estimate

Standard error

Statistic

df

p value

Fixed

NA

(Intercept)

6.445

0.336

19.142

47.41

<0.001

Fixed

NA

latitude_sc

1.588

0.314

5.052

49.51

<0.001

Fixed

NA

time_sc

−0.809

0.374

−2.163

61.78

0.034

Fixed

NA

year_sc

−0.147

0.482

−0.305

44.19

.0.761

Fixed

NA

`Shade tolerance category`Tolerant

−0.045

0.223

−0.201

337.82

0.840

ran_pars

Article number

sd__(Intercept)

2.067

NA

NA

NA

NA

ran_pars

Residual

sd__Observation

4.046

NA

NA

NA

NA