| Latitude | Longitude |
R
2
|
---|
Mean cup diameter | 1.61 (0.207) | 5.34 (< 0.001) | 11.75 |
Cup depth | 1.27 (0.262) | 0.69 (0.406) | 3.21 |
Mean wall thickness | 5.84 (0.017) | 1.87 (0.174) | 22.46 |
Base thickness | 25.69 (< 0.001) | 4.86 (0.029) | 17.22 |
Nest height | 0.03 (0.866) | 1.85 (0.176) | 1.93 |
- The model included box area (cm2) as a covariate to control for variation in box size between locations. All interactions between latitude and longitude were non-significant so the interaction was removed from the model, which was run again. Each parameter was tested individually. Data are presented for five dimensions (shown in Additional file 1: Table S1). Values are F statistics, with degrees of freedom = 1158 in each case, and p values in parentheses