Table 1.
Description of mesocosm-based studies
| Study | Country | N | Variety | Sterility | Taxonomy | Yield metric |
|---|---|---|---|---|---|---|
| M1: Jauker and Wolters52 | Germany | 23 | Licosmos (Rest.Hyb.) | MF | Di. | Seeds silique−1 |
| M2: Jauker et al.28 | Germany | 28 | MSL 501C (Hybrid) | MS | Hy. Di. | Seeds silique−1 |
| M3: Steffan-Dewenter14 | Germany | 19 | Express MSL (Hybrid) | MS | Hy. | Seeds silique−1 |
| M4: Steffan-Dewenter14 | Germany | 19 | Express (Rest.Hyb.) | MF | Hy. | Seeds silique−1 |
| M5: Garratt et al.47 | UK | 70 | Heros (Conv.) | MF | Hy. Di. | Seeds silique−1 |
| M6: Soroka, et al.67—1994 experiment | Canada | 10 | PC FU1981 (Hybrid) | MS | Hy. | Tonnes ha−1 |
| M7: Soroka, et al.67—1995 experiment | Canada | 12 | PC FU1981 (Hybrid) | MS | Hy. | Tonnes ha−1 |
These studies assess the impacts of abundance and species richness on oilseed rape yield under controlled experimental conditions. As the taxonomic breath of species in mesocosms is low (≤2) more complex community measures (e.g., functional divergence or CWM) were not assessed in these meta-analyses. Oilseed rape plants are either male sterile and male fertile (MS) or are all male fertile (MF). Studies are split by the variety of oilseed rape and year of observation. N = number of sample units defined as fields or mesocosms. Conv., conventional variety; Rest.Hyb., restored hybrid variety. The taxonomic range of the level of species identification includes hymenoptera (Hy.), Diptera (Fl.) and Lepidoptera (Bu.). Yield metric describes the units of the measure of yield. In all cases zero pollinator abundance mesocosm were used as controls