Ecological Archives E096-240-A1

S. Joseph Wright, I-Fang Sun, Maria Pickering, Christine D. Fletcher, and Yu-Yun Chen. 2015. Long-term changes in liana loads and tree dynamics in a Malaysian forest. Ecology 96:27482757. http://dx.doi.org/10.1890/14-1985.1

Appendix A. Summary of the model fitting procedure used for random effects for generalized linear mixed model analyses of growth, survival, and reproduction.

Table A1. Summary of the model fitting procedure used for random effects for generalized linear mixed model analyses of growth, survival and reproduction. We included all fixed and random effects in an initial model. We then removed each random effect to evaluate its significance and retained only significant random effects. Fixed effects are presented in Table 2 in the main text.

Response variable

Random effect in model

df

AIC

logLik

Random effect evaluated

χ2

χ2 df

Pr(>χ2)

Growth

(1|species)

10

-10064.2

5042.1

Space

0

1

0.998

(1|space)

10

-9989.3

5004.7

Species

74.9

1

< 2.2e-16

(1|species)+(1|space)

11

-10062.2

5042.1

-

-

-

-

Survival

(1|species)

9

3283.6

-1632.8

Space

24.8

1

6.261e-07

(1|space)

9

3349.3

-1665.6

Species

90.6

1

< 2.2e-16

(1|species)+(1|space)

10

3260.7

-1620.4

-

-

-

-

Reproduction

(1|species)

11

2674.5

-1326.2

Space

12.1

1

0.000489

(1|space)

11

3440.5

-1709.3

Species

778.2

1

< 2.2e-16

(1|species)+(1|space)

12

2664.3

-1320.2

-

-

-

-

Notes: A one to the left of a vertical bar indicates a random intercept for the (grouping) factor to the right of the bar. For growth, the response variable and covariate were the logarithms of DBH in 2005 and 2000, respectively; liana loads and crown position were assessed in 2002; and 2403 individuals and 149 species were included. For survival, the response variable was survival from 2000 to 2010, the covariate was the logarithm of DBH in 2000, liana loads and crown position were assessed in 2002, and 3032 individuals and 149 species were included. For reproduction, the response variable was reproductive status in 2014 (sterile or fertile), the covariate was the logarithm of DBH in 2010, liana loads and crown position were assessed in 2014, and 2706 individuals and 130 species were included.


[Back to E096-240]