Table 2.
Results for a GLMM with seed set of focal and hand-pollinated field and greenhouse flowers of Tradescantia ohiensis as the response variable and pollinator taxa and hand-pollination as predictor variables.
| Effects | Estimate | SE/SD† | z | P | N |
|---|---|---|---|---|---|
| Fixed | |||||
| Hand pollination | 1.21 | 0.083 | 440 | ||
| Bombus spp. | −1.54 | 0.46 | 56 | ||
| Augochlorella sp. | 0.17 | 0.71 | 20 | ||
| Ceratina dupla | 0.0028 | 0.44 | 78 | ||
| Toxomerus geminatus | −2.51 | 0.92 | 42 | ||
| Dialictus sp. large | −2.80 | 1.48 | 15 | ||
| Week × hand pollination | 0.049 | 0.024 | 2.03 | 0.043 | |
| Week × Bombus spp. | 0.44 | 0.12 | 3.49 | 0.0005 | |
| Week × Augochlorella sp. | 0.056 | 0.16 | 0.35 | 0.73 | |
| Week × Ceratina dupla | −0.048 | 0.18 | −0.27 | 0.79 | |
| Week × Toxomerus geminatus | 0.42 | 0.21 | 1.98 | 0.047 | |
| Week × Dialictus sp. large | 0.65 | 0.33 | 1.96 | 0.050 | |
| Random | |||||
| Individual plant | 0.30 | <0.0001 | 283 | ||
| Date | 0 | 1 | 18 |
Notes: The interaction between week and hand pollination gives the slope for hand pollinations, and the interactions between pollinator taxa and week test whether the slope for each pollinator differs from the slope for hand pollinations. The z scores and P values are not given for the main effects because we are not interested in hypotheses regarding these terms. Coefficients are on a log scale because seed set was assumed to be Poisson distributed.
SE for fixed effects, SD for random effects.