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 