Table 2.
Results from statistical analysis of differences between time periods in arcsine transformed proportional abundances, evenness and log10-transformed species richness of bumble-bees in clover seed fields. Community evenness was measured with the Simpson's index. Results are presented from a mixed model, with site and site within period as random factors.
| species | mixed model results |
||
|---|---|---|---|
| d.f. | F | p | |
| B. terrestris | 2,8 | 48.9 | <0.0001 |
| B. lapidarius | 2,8 | 3.9 | 0.07 |
| B. pascuorum | 2,8 | 30.4 | 0.0002 |
| B. distinguendus | 2,8 | 29.1 | 0.0002 |
| B. hortorum | 2,8 | 51.3 | <0.0001 |
| B. subterraneus | 2,8 | 0.54 | 0.60 |
| B. sylvarum | 2,8 | 4.8 | 0.04 |
| B. hypnorum | 2,8 | 8.2 | 0.01 |
| B. pratorum | 2,8 | 2.6 | 0.14 |
| Bombus spp. | 2,8 | 19.5 | 0.0008 |
| evenness | 2,8 | 12.9 | 0.003 |
| species richness | 2,8 | 9.6 | 0.008 |