Table I.
Summary of GAM model fit results. Each model was fitted with a term to account for repeated measures and an error term, therefore “# of terms” = predictor terms + 2. “Smooth terms” refers to the intra- and inter-annual smooth functions.
| Parameters | Log Likelihood | # of parameters | AICc | delta AIC | AIC weight | Null deviance explained |
|---|---|---|---|---|---|---|
| Smooth terms only | 551.525426 | 5 | −1082.7040 | 0.0000 | 0.412909 | 61.77185% |
| Temperature | 553.002522 | 6 | −1081.5167 | 1.1874 | 0.228046 | 62.24319% |
| Rainfall | 552.211668 | 6 | −1079.9350 | 2.7691 | 0.103409 | 61.98963% |
| Rainfall, Temperature | 553.967696 | 7 | −1079.2804 | 3.4236 | 0.074546 | 62.54568% |
| Irradiance | 551.794046 | 6 | −1079.0997 | 3.6043 | 0.068106 | 61.85612% |
| Temperature, Irradiance | 553.726288 | 7 | −1078.7976 | 3.9064 | 0.058558 | 62.46969% |
| Rainfall, Irradiance | 553.434472 | 7 | −1078.2140 | 4.4901 | 0.043737 | 62.37981% |
| Full model | 554.12148 | 8 | −1075.3959 | 7.3081 | 0.010688 | 62.59480% |