Table 1 GLMM for modelling seedling survival data from the field.

From: The effect of soil-borne pathogens depends on the abundance of host tree species

Fixed effects

Estimated coefficients (s.e.)

z-value

P (>|z|)

(Intercept)

−7.46 (1.05)

−7.13

1.03e−12

Abundance

9.64 (1.30)

7.04

1.35e−13

Distance

0.46 (0.093)

4.89

9.61e−07

Abundance × distance

−0.52 (0.13)

−3.90

9.52e−05

Random effect

Variance

 

P (> χ2)

Site (intercept)

0.14

 

0.53

  1. GLMM, generalized linear mixed effects model.
  2. A GLMM was used to test the effects of adult abundance (0 for abundant populations and 1 for low-density populations), distance (0–4, 4–8, 8–12 and 12–20 m from a focal tree) and their interaction on seedling survival of O. glaberrima. Population sites were treated as a random effect. The dependent variable of the GLMM was the count of dead and live seedlings by the end of the field observation (that is, December 2012). The number of seedlings at this time (December 2012) was the live seedlings that survived up to this time plus the new seedlings that germinated since the previous time (that is, October 2012). The estimated overdispersion variance was 0.55.
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