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Table 2 Model results for species evenness. Approximate significance of the intercept, any parametric terms and the smooth terms for single variables and tensor product smooth terms for interactions

From: Nitrogen deposition causes eutrophication in bryophyte communities in central and northern European forests

 

Pielou evenness

Predictors

edf

Chi.sq

p

Smooth term (NH4, NO3)

4.23

21.29

< 0.001

Smooth term (canopy)

1.02

11.44

< 0.001

Smooth term (precipitation)

0.89

6.70

0.004

Smooth term (age)

0

0

0.52

Smooth term (pH)

0.62

1.59

0.09

Tensor product smooth term (longitude, latitude, year)

33.08

394.27

< 0.001

Parametric coefficient

   
 

Estimate

Std. error

z-value

p

Intercept

0.76

0.01

56.1

< 0.001

Fixed effect (forest type)

−0.19

0.02

−10.2

< 0.001

Deviance explained = 55%