Table 2
Statistics of the beta distribution model (Eq. (3)) between nectar sugar mass per floret and air temperature.
| Model | k | Parameter values ± 95% CI | R2D | AIC | Model rank | ΔAIC | ||||
|---|---|---|---|---|---|---|---|---|---|---|
| α | mmax | tmin | topt | tmax | ||||||
| Null | 2 | 32 029 | 2 | 118 | ||||||
| Temperature | 4 | 0.618 ± 0.515 | 180 ± 8 | −11.0 ± 86.7 | 32.0 ± 0.5 | 36.3 ± 0.8 | 0.046 | 31 911 | 1 | 0 |
k: number of estimated parameters per model; CI: confidence interval; R2D: coefficient of determination calculated by the deviance ratio; model rank: model ranking by increasing AIC value; ΔAIC: AIC value minus the lowest AIC; α: parameter that determines the shape of the curve; mmax: maximum sugar mass secreted per floret at the optimum temperature topt; tmin, tmax: respectively minimum, maximum, temperature below and above which nectar secretion is nil.
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