Appendix C. Test statistics for environmental variables.
TABLE C1. Test statistics for environmental variables within the young stands (N = 23). The zvalue is the test statistics in GLM with poison and binomial error terms, tvalue in GLM with Gaussian error term (linear model), and V denotes the test statistics in Wilcoxon signed rank test used for the pairwise comparison of variables in two plots (at 10 and 80 m from the edge) for variables with problematic distributions (See also Table 1).
Variable 
Error term 
Test 
β 
P value 
Residual 
df 
Coarse logs (>25 cm) (m) 
Poission 
z = 2.8 
0.74 
0.0041 
30 
68 
Fine logs (<25 cm) (m) 
Poission 
z = –3.0 
–0.78 
0.0024 
51 
68 
Coarse stumps (>25 cm) (n:o) 
Poission 
z = 1.1 
0.011 
0.26 
92 
68 
Fine stumps (<25 cm) (n:o) 
Poission 
z = 0.67 
0.071 
0.51 
98 
68 
Boulders (>0.5 m) (frequency 020) 
Binomial 
z = 2.6 
0.21 
0.010 
91 
68 
Dry ground (frequency 0–20) 
Binomial 
z = 2.2 
0.026 
0.025 
79 
68 
Peatmoss cover (frequency 0–20) 
Binomial 
z = –1.2 
–0.15 
0.23 
128 
68 
Canopy cover (%) 
V = 17 
– 
0.086 
– 
– 

Shrub cover (%) 
V = 71.5 
– 
0.53 
– 
– 

Understory cover (%) 
V = 47.5 
– 
0.92 
– 
– 

Bryophyte cover (%) 
V = 87.5 
– 
0.029 
– 
– 

Basal area spruce (m^{2}/ha^{1}) 
V = 116 
– 
1.0 
– 
– 

Basal area pine (m^{2}/ha^{1}) 
V = 84 
– 
0.28 
– 
– 

Basal area decidous trees (m^{2}/ha^{1}) 
V = 1 
– 
0.058 
– 
– 

Height of trees (m) 
Gaussian 
t = –0.32 
–0.05 
0.28 
– 
67 