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Table 9 Results of the linear mixed models to test the effect of latitude, time since fire, and year of study on the fire 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)

6.690

0.342

19.557

50.62

<0.001

Fixed

NA

latitude_sc

1.539

0.315

4.880

49.26

<0.001

Fixed

NA

time_sc

−0.768

0.383

−2.003

59.49

0.049

Fixed

NA

year_sc

−0.089

0.481

−0.186

43.90

0.856

Fixed

NA

`Fire tolerance category`low/moderate

−0.498

0.219

−2.270

325.73

0.0238

ran_pars

Article number

sd__(Intercept)

2.060

NA

NA

NA

NA

ran_pars

Residual

sd__Observation

4.013

NA

NA

NA

NA