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r 2 values of MRM tests
| Model components | N. & C. America | W. Europe |
|---|---|---|
| Compositional dissimilarity ~ geographic | .237 | .094 |
| Compositional dissimilarity ~ geographic + climate | .337 | .191 |
| Compositional dissimilarity ~ geographic + vegetation | .252 | .108 |
| Compositional dissimilarity ~ geographic + climate + vegetation | .344 | .198 |
p < .001 in all cases.
