Appendix A. Repeated-measures analysis of cover and species richness of functional types in grass- and shrub-dominated vegetation in areas with and without rodents. V = vegetation type, Tr = rodent access/removal treatment, and V × Tr their interaction.
Cover |
Species richness |
|||||||
SS |
df |
F |
P |
SS |
df |
F |
P |
|
Summer annuals |
||||||||
V |
7.953 |
1,12 |
95.438 |
<0.001 |
5.035 |
1,12 |
60.417 |
<0.001 |
Tr |
0.065 |
1,12 |
0.784 |
0.393 |
0.04 |
1,12 |
0.478 |
0.503 |
V × Tr |
0.351 |
1,12 |
4.211 |
0.063 |
0.008 |
1,12 |
0.095 |
0.763 |
Overall |
8.369 |
3,12 |
33.477 |
<0.001 |
5.083 |
3,12 |
20.33 |
<0.001 |
Winter annuals |
||||||||
V |
0 |
1,12 |
0 |
0.994 |
1.974 |
1,12 |
23.693 |
<0.001 |
Tr |
0.291 |
1,12 |
3.494 |
0.086 |
0.045 |
1,12 |
0.54 |
0.477 |
V × Tr |
0.054 |
1,12 |
0.643 |
0.438 |
0.151 |
1,12 |
1.818 |
0.203 |
Overall |
0.345 |
3,12 |
1.379 |
0.297 |
2.171 |
3,12 |
8.684 |
0.003 |
Forbs |
||||||||
V |
3.944 |
1,12 |
47.323 |
<0.001 |
4.625 |
1,12 |
55.498 |
<0.001 |
Tr |
0.037 |
1,12 |
0.45 |
0.516 |
0.005 |
1,12 |
0.06 |
0.811 |
V × Tr |
0.07 |
1,12 |
0.84 |
0.377 |
0.025 |
1,12 |
0.302 |
0.593 |
Overall |
4.051 |
3,12 |
16.204 |
<0.001 |
4.655 |
3,12 |
18.62 |
<0.001 |
Grasses |
||||||||
V |
18.062 |
1,12 |
216.743 |
<0.001 |
6.311 |
1,12 |
75.733 |
<0.001 |
Tr |
0.014 |
1,12 |
0.171 |
0.687 |
0.003 |
1,12 |
0.037 |
0.851 |
V × Tr |
0.032 |
1,12 |
0.38 |
0.549 |
0.018 |
1,12 |
0.211 |
0.648 |
Overall |
18.108 |
3,12 |
72.431 |
<0.001 |
6.332 |
3,12 |
25.33 |
<0.001 |
Shrubs |
||||||||
V |
8.639 |
1,12 |
103.666 |
<0.001 |
0.586 |
1,12 |
7.033 |
0.021 |
Tr |
0 |
1,12 |
0.004 |
0.949 |
0.024 |
1,12 |
0.293 |
0.598 |
V × Tr |
0.022 |
1,12 |
0.269 |
0.613 |
0.003 |
1,12 |
0.031 |
0.863 |
Overall |
8.662 |
3,12 |
34.647 |
<0.001 |
0.613 |
3,12 |
2.452 |
0.114 |
Total |
||||||||
V |
1.397 |
1,12 |
16.77 |
0.002 |
4.703 |
1,12 |
56.441 |
<0.001 |
Tr |
0.002 |
1,12 |
0.019 |
0.893 |
0.01 |
1,12 |
0.123 |
0.732 |
V × Tr |
0 |
1,12 |
0.001 |
0.983 |
0.003 |
1,12 |
0.032 |
0.861 |
Overall |
1.398 |
3,12 |
5.593 |
0.012 |
4.716 |
3,12 |
18.865 |
<0.001 |
Heterogeneity |
||||||||
V |
0.636 |
1,12 |
7.63 |
0.017 |
||||
Tr |
0.293 |
1,12 |
3.515 |
0.085 |
||||
V × Tr |
0.032 |
1,12 |
0.381 |
0.549 |
||||
Overall |
0.96 |
3,12 |
3.842 |
0.039 |
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