Skip to main content

Advertisement

Table 3 Fixed effects part (year, treatment, and their interaction term) of generalized linear mixed models for abundance (a) and species richness (b) for all areas ( n= 12)

From: The effect of peatland drainage and restoration on Odonata species richness and abundance

   Estimate SE z cpb
a) Intercept −0.77 0.62 −1.25 0.211
  year (1) −18.53 1998.18 −0.01 0.993
  year (3) 2.01 0.47 4.31 <0.001
  treatment (D) −0.57 0.82 −0.70 0.485
  treatment (R) 3.38 0.71 4.79 <0.001
  year (1):treatment (D) 18.05 1998.18 0.01 0.993
  year (3):treatment (D) −1.14 0.62 −1.85 0.064
  year (1):treatment (R) 17.81 1998.18 0.01 0.993
  year (3):treatment (R) −1.96 0.49 −4.02 <0.001
b) Intercept −0.83 0.45 −1.85 0.064
  year (1) −19.15 248.36 −0.08 0.939
  year (3) 1.40 0.50 2.78 0.006
  treatment (D) −0.41 0.66 −0.62 0.539
  treatment (R) 1.62 0.48 3.39 0.001
  year (1):treatment (D) 18.64 248.36 0.08 0.940
  year (3):treatment (D) −0.88 0.87 −1.01 0.311
  year (1):treatment (R) 19.10 248.36 0.08 0.939
  year (3):treatment (R) −1.49 0.59 −2.51 0.012
  1. Before restoration and pristine sites are used as baselines. Year (1) = first year after restoration, year (3) = third year after restoration, treatment (D) = drained sites, treatment (R) = restored sites. Random variables = study area, study site; number of observations = 87, residual degrees of freedom = 76.
  2. Number in bold indicate statistically significant results.