Table 4 CCA output for predictor variables in a mixed-pine forest ecosystem in the eastern Upper Peninsula of Michigan, USA. VIF = Variance Inflation factor (VIF). Correlation values are Pearson’s Correlation Coefficient (r)
Predictor variable | F | P | Variation explained | Correlation with Axis 1 | Correlation with Axis 2 | VIF |
|---|---|---|---|---|---|---|
2 years since treatment | ||||||
 Shrubs | 12.8 | 0.001 | 19.8% | 0.65 | −0.27 | 1.3 |
 Ferns | 9.3 | 0.001 | 15.2% | −0.48 | − 0.38 | 1.8 |
 Oak | 5.8 | 0.003 | 10.1% | −0.47 | −0.01 | 1.2 |
 Maple | 5.4 | 0.040 | 9.4% | −0.32 | −0.36 | 3.2 |
 Aspen | 2.4 | 0.095 | 4.4% | −0.23 | 0.24 | 1.1 |
 Herbs | 1.7 | 0.156 | 3.1% | −0.24 | −0.12 | 2.4 |
6 years since treatment | ||||||
 Maple | 7.7 | 0.002 | 12.9% | 0.61 | 0.02 | 1.3 |
 Oak | 5.0 | 0.003 | 8.7% | 0.29 | 0.42 | 1.2 |
 Herbs | 4.4 | 0.004 | 7.9% | −0.44 | 0.05 | 1.1 |
 Ferns | 2.5 | 0.057 | 4.6% | 0.09 | −0.33 | 1.1 |
 Aspen | 1.7 | 0.135 | 3.2% | 0.29 | 0.09 | 1.2 |
 Shrubs | 1.2 | 0.300 | 2.3% | −0.04 | 0.15 | 1.1 |