Appendix C. Results of PERMANOVA analyses examining the effects of lake alkalinity and trophic status on the relative variability of the spatial distances among lakes sampled for (a) littoral and (b) profundal/sub-littoral invertebrates.
|
Source |
df |
Sum of squares |
Mean square |
Pseudo-F |
P |
(a) |
Alkalinity |
2 |
7.19 × 109 |
3.59 × 109 |
1.94 |
0.16 |
|
Trophic status |
1 |
2.93 × 108 |
2.93 × 108 |
0.16 |
0.7 |
|
Alk × TS |
2 |
7.1 × 109 |
3.55 × 109 |
1.92 |
0.15 |
|
Residual |
34 |
6.29 × 1010 |
1.85 × 109 |
|
|
|
Total |
39 |
8.91 × 1010 |
|
|
|
(b) |
Alkalinity |
2 |
2.51 × 109 |
1.25 × 109 |
0.82 |
0.43 |
|
Trophic status |
1 |
2.86 × 107 |
2.86 × 107 |
0.01 |
0.89 |
|
Alk × TS |
2 |
6.88 × 109 |
3.44 × 109 |
2.25 |
0.11 |
|
Residual |
46 |
7.02 × 1010 |
1.53 × 109 |
|
|
|
Total |
51 |
7.84 × 1010 |
|
|
|