Table 3.
Standard least squares mixed model results at different spatial scales with dispersing seed DOY as the response variable, species as a random effect, and May, June, July, and August mean temperatures as fixed effects, showing July mean temperature generally had the strongest correlation with time of seed dispersal and models have better fit at finer spatial scales
| Overall model | May (°C) | June (°C) | July (°C) | August (°C) | |||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Adj R 2 | N | RMSE | F | p | F | p | F | p | F | p | |
| Nunavut | .23 | 346 | 11.42 | 0.04 | .8391 | 0.61 | .4342 | 41.33 | <.0001 | 21.96 | <.0001 |
| Nunavut mainland | .45 | 58 | 10.01 | 0.25 | .6171 | 0.06 | .8063 | 0.04 | .8428 | 2.50 | .1200 |
| Nunavut archipelago | .26 | 288 | 11.29 | 0.51 | .4760 | 0.14 | .7099 | 48.20 | <.0001 | 29.30 | <.0001 |
| Baffin Island | .24 | 123 | 11.29 | 0.19 | .6652 | 1.32 | .2537 | 14.69 | .0002 | 0.14 | .7071 |
| Ellesmere Island | .19 | 87 | 9.62 | 6.39 | .0134 | 0.75 | .3884 | 15.49 | .0002 | 9.14 | .0034 |
| Iqaluit | .63 | 65 | 8.99 | 27.35 | <.0001 | 5.30 | .0254 | 46.96 | <.0001 | 0.09 | .7648 |
| Lake Hazen | .29 | 47 | 5.38 | 0.06 | — | 1.20 | — | 0.69 | — | 0.03 | — |