Appendix C. A table showing summary of GLM results.
TABLE C1. A summary of GLM results for treatment effects on species richness (SR) in all years, seedling recruitment (2000 only), and community production (cover in June and August in 2000, aboveground biomass in 2001 and 2002) in response to reduction of vegetative cover (R), fertilizer (F) and seed addition (S).
|
Effect |
Species per plot |
Seedlings 2000 |
Adult cover (C) or Biomass (B) |
||||||
|
|
2000 |
2001 |
2002 |
Numbers |
Species |
Jun00 |
Aug00 |
2001 |
2002 |
|
R |
ns |
*** |
* |
*** |
** |
ns |
** |
ns |
** |
|
S |
*** |
*** |
*** |
*** |
*** |
ns |
ns |
(*) |
ns |
|
F |
* |
ns |
* |
ns |
ns |
*** |
*** |
*** |
*** |
|
R × S |
** |
ns |
ns |
** |
ns |
ns |
ns |
* |
ns |
|
R × F |
ns |
ns |
ns |
ns |
ns |
(*) |
ns |
ns |
ns |
|
S × F |
ns |
ns |
ns |
ns |
ns |
ns |
ns |
ns |
ns |
|
R × S × F |
* |
ns |
* |
ns |
ns |
ns |
ns |
ns |
ns |
Notes: Data were log-transformed to meet assumptions of normality and homogeneity of variance. The model, degrees of freedom, and error terms used to test for main effects and interactions are given in Appendix A. Significance levels of F tests are indicated by: (*)<0.1, but >0.05; * <0.05; **<0.01, *** <0.001; ns = not significant, P > 0. 1.