| Source of variation | Sum of squares | df | Mean square | F | P |
| Intersection | 5.752 | 1 | 5.752 | 80.414 | 0.000 |
| Site | 0.001 | 1 | .001 | 0.019 | 0.890 |
| Species | 3.089 | 4 | .772 | 10.795 | 0.000 |
| Site * Species | 3.451 | 4 | .863 | 12.063 | 0.000 |