Table 2.
Degree of observed and expected morphological matching based on the mean trait values of the interaction partners, according to the species-based and abundance-based algorithms
| Model | Slope | Intercept | r2 | Δ | t | P |
|---|---|---|---|---|---|---|
| Plants' perspective | ||||||
| Species-based | ||||||
| Observed | 0·95 | +2·26 | 0·82 | – | – | – |
| Expected | 1·09 | +2·18 | 0·97 | –0·14 | –1·422 | 0·162 |
| Threshold line | 1·00 | 0·00 | 1·00 | –0·05 | –0·949 | 0·348 |
| Abundance-based | ||||||
| Observed | 0·90 | +2·27 | 0·85 | – | – | – |
| Expected | 0·75 | +3·54 | 0·95 | +0·15 | +1·770 | 0·083 |
| Threshold line | 1·00 | 0·00 | 1·00 | −0·10 | −1·638 | 0·108 |
| Pollinators' perspective | ||||||
| Species-based | ||||||
| Observed | 0·53 | +0·14 | 0·70 | – | – | – |
| Expected | 0·52 | –0·01 | 0·96 | +0·01 | +1·910 | 0·849 |
| Threshold line | 1·00 | 0·00 | 1·00 | –0·47 | –14·170 | <0·001 |
| Abundance-based | ||||||
| Observed | 0·54 | +0·11 | 0·72 | – | – | – |
| Expected | 0·36 | –0·18 | 0·95 | +0·18 | +5·300 | <0·001 |
| Threshold line | 1·00 | 0·00 | 1·00 | –0·46 | –14·570 | <0·001 |
The table gives the slope, intercept and r2 of the best linear fits to the observed data and to model predictions, corresponding to the fits shown in Figs 2 and 3. Δ indicates the difference in slope between these regression lines, and between the observed regression and a slope of unity expected under perfect size matching; t gives the t value and P the significance of these differences.