TABLE 1.
Sampling of B. terrestris in Southern Sweden
| Site ID | Sample groups | CB colonies present | Cultivation type | # of CB colonies/year | # of years with CB colony usage | # of CBs collected | # of free‐flying WBs caught | Distance from nearest CB colony | Sampling/collection date |
|---|---|---|---|---|---|---|---|---|---|
| V1 | WE | Yes | Greenhouse | 300–350 | 25 | – | 7 | 1000 m | 03–08–2018 |
| V2 | WE | Yes | Greenhouse | NA* | 18 | – | 9 | 1000 m | 02–08–2018 |
| V3 | WE | Yes | Greenhouse | 300–350 | 23 | – | 9 | 900 m | 03–08–2018 |
| T2 | WE | Yes | Tunnel | 50 | 12 | – | 12 | 1000 m | 30–07–2018 |
| T6 | WE | Yes | Greenhouse, tunnel, free land | 25 | 27 | – | 14 | 700 m | 30–07–2018 |
| 1326 | WE | Yes | Free land | 12 | 3 | – | 5 | 3000 m | 17–07–2019 |
| E1 | WC | No | – | – | – | – | 12 | 20 km | 25–07–2018 |
| E2 | WC | No | – | – | – | – | 6 | 19 km | 25–07–2018 |
| E3 | WC | No | – | – | – | – | 2 | 15 km | 25–07–2018 |
| E4 | WC | No | – | – | – | – | 1 | 15 km | 25–07–2018 |
| V1 | CB | Yes | Greenhouse | 300–350 | 25 | 1 | – | – | 27–07–2018 |
| V2 | CB | Yes | Greenhouse | NA* | 18 | 1 | – | – | 27–07–2018 |
| V3 | CB | Yes | Greenhouse | 300–350 | 23 | 1 | – | – | 27–07–2018 |
| V5 | CB | Yes | Greenhouse | 3 | NA | 1 | – | – | 27–07–2018 |
| V6 | CB | Yes | Greenhouse | 11 | 27 | 1 | 27–07–2018 | ||
| T1 | CB | Yes | Tunnel | 6 | NA | 1 | – | – | 27–07–2018 |
| T5 | CB | Yes | Tunnel, free land | 3 | NA | 1 | – | – | 27–07–2018 |
| T6 | CB | Yes | Greenhouse, tunnel, free land | 25 | 27 | 1 | – | – | 27–07–2018 |
| I66025 | CB | Yes, freestanding | – | NA | NA | 1 | – | – | 27–07–2018 |
| I87032 | CB | Yes, freestanding | – | NA | NA | 1 | – | – | 27–07–2018 |
| I40017 | CB | Yes, freestanding | – | NA | NA | 1 | – | – | 27–07–2018 |
| 132006 | CB | Yes, freestanding | – | NA | NA | 1 | – | – | 27–07–2018 |
| I59019 | CB | Yes, freestanding | – | NA | NA | 1 | – | – | 27–07–2018 |
| I16004 | CB | Yes, freestanding | – | NA | NA | 1 | – | – | 27–07–2018 |
| I59020 | CB | Yes, freestanding | – | NA | NA | 1 | – | – | 27–07–2018 |
| 136014 | CB | Yes, freestanding | – | NA | NA | 1 | – | – | 27–07–2018 |
| 133007 | CB | Yes, freestanding | – | NA | NA | 1 | – | – | 27–07–2018 |
| I59021 | CB | Yes, freestanding | – | NA | NA | 1 | – | – | 27–07–2018 |
The name of the sampling sites and the name of the three sampling groups are illustrated in the table. Indication if commercial colonies are present in the agricultural practices located in our sampling sites, the cultivation type, the number of commercial bumblebee (CB) colonies used on a yearly basis, the number of years with CB colony usage for the agricultural practices used in the study, the number of free‐flying wild bumblebees (WBs) caught at each site and the distance in meters from each sampling site to the nearest CB colony is also illustrated in the table.
We collected the free‐flying and commercial bumblebees between 17/07/2018 and 03/08/2018.
Abbreviations: WE, wild experimental bumblebees (n = 57); CB, commercial bumblebees (n = 18) and WC, wild control bumblebees (n = 21). NA*, the exact number of CB colonies used per year is not known but the greenhouse tomato cultivation is of large scale and has been operating since 2000.