Appendix B. GLM summary statistics relating to litter identity effects.
TABLE B1. A comparison between using litter species "presence/absence" and "initial proportion" in explaining model variation. SS is the accumulated sums of squares for the five litter identity terms entered after time and block; %SS is the percentage of total sums of squares explained by these five litter identity terms.
Litter identity terms |
|||||
Presence/Absence |
Initial proportion |
||||
SS |
%SS |
SS |
%SS |
||
Log mass loss (%) |
4.516 |
19.0 |
6.015 |
25.3 |
|
Moisture (% dry mass) |
208318 |
2.8 |
270707 |
3.7 |
|
Log C:N ratio |
2.136 |
17.6 |
3.025 |
24.9 |
|
Log microbial biomass (nmol/g litter dm) |
1.781 |
11.7 |
1.852 |
12.2 |
|
Sqrt nematode abundance (Ind./g litter dm) |
61.72 |
3.0 |
128.61 |
6.3 |
|
TABLE B2. Summary GLM statistics for "species composition" when entered into the model (after fitting time and block) alone or after the five litter identity terms.
Alone |
After identity terms |
|||||
SS |
F |
P |
SS |
F |
P |
|
Log mass loss (%) |
6.296 |
26.8 |
<0.001 |
0.282 |
1.4 |
0.110 |
Moisture (% dry mass) |
523615 |
2.3 |
<0.001 |
252907 |
1.3 |
0.173 |
Log C:N ratio |
3.367 |
11.4 |
<0.001 |
0.341 |
1.3 |
0.138 |
Log microbial biomass (nmol/g litter dm) |
5.509 |
4.8 |
<0.001 |
3.657 |
3.7 |
<0.001 |
Sqrt nematode abundance (Ind./g litter dm) |
265.4 |
1.5 |
0.062 |
136.7 |
0.9 |
0.645 |