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Results of mixed models testing the relationship between changing timing of phenology (βDOY_x_YEAR) and changing summer air temperatures (βDOY_x_TAIRSUMMER) by phenological event for each species × subsite combination. As a result of data limitations, the model did not converge for green.
| stage | R2adj | slope | d.f. | t | p-value |
|---|---|---|---|---|---|
| flower | 0.73 | −0.306 | 1 | 6.72 | <0.0001 |
| green | — | — | — | — | — |
| senesce | 0.90 | −0.134 | 1 | 10.92 | <0.0001 |
