Table 1. Regression of model grasshopper temperatures (TE) on soil
surface temperature (TS) in field, and deviation of
TE from TSET for models placed in different
combinations of location and posture.
| Linear regression of T E on T S | at Ts ≤ 30°C | at Ts > 45°C | ||||||
|---|---|---|---|---|---|---|---|---|
| F | df | r 2 | Probability | Deviation of T E from T SET mean ± SE | n | Deviation of T E from T SET mean ± SE | n | |
| 0 cm (basking) | 1433 | 1, 77 | 0.95 | P < 0.001 | 12.2 ± 0.8 | 32 | 10.6 ± 0.6 | 27 |
| 0 cm (aligned with shade) | 1157.2 | 1, 76 | 0.94 | P < 0.001 | 13.8 ± 0.7 | 31 | 7.6 ± 0.6 | 27 |
| 2 cm (facing sun) | 934.1 | 1, 77 | 0.92 | P < 0.001 | 14.6 ± 0.7 | 32 | 1.6 ± 0.4 | 27 |
| 5 cm (vertical) | 864.3 | 1, 77 | 0.92 | P < 0.001 | 15.3 ± 0.7 | 32 | 1.0 ± 0.3 | 27 |
| 10 cm (vertical) | 901.3 | 1, 73 | 0.93 | P < 0.001 | 15.7 ± 0.7 | 30 | 1.0 ± 0.2 | 26 |
| 20 cm (vertical) | 452.5 | 1, 39 | 0.92 | P < 0.001 | 22.0 ± 0.8 | 17 | 1.8 ± 0.3 | 16 |