Table 2.
Multiple regression models of species–energy relationships that take spatial autocorrelation into account.
| number of species | response | temperature | temperature2 | NDVI | NDVI2 | model weight | r2 (%) |
|---|---|---|---|---|---|---|---|
| 189 | all species | F1,2257=137.9++++ | F1,2257=111.9−−−− | F1,2257=19.7++++ | F1,2257=17.9−−−− | 0.987 | 30.4 |
| 107 | non-passerines | F1,2257=57.1++++ | F1,2257=45.2−−−− | F1,2257=18.1++++ | F1,2257=19.2−−−− | 0.946 | 16.0 |
| 82 | passerines | F1,2257=205.8++++ | F1,2257=170.3−−−− | F1,2257=13.4+++ | F1,2257=9.7−− | 0.562 | 43.1 |
| 82 | passerines | F1,2258=219.2++++ | F1,2258=20.9++++ | F1,2258=14.0−−− | 0.438 | 38.9 | |
| 141 | long distance resident | F1,2257=151.6++++ | F1,2257=126.3−−−− | F1,2257=26.3++++ | F1,2257=24.7−−−− | 0.999 | 28.4 |
| 48 | long distance migrant | F1,2258=60.8++++ | F1,2258=45.1−−−− | F1,2258=9.6++ | 0.839 | 29.2 | |
| 116 | partial resident | F1,2257=144.9++++ | F1,2257=110.5−−−− | F1,2257=24.8++++ | F1,2257=21.9−−−− | 0.998 | 45.6 |
| 73 | partial migrant | F1,2259=98.3++++ | F1,2259=91.1−−−− | 0.846 | 3.2 | ||
| 35 | red list | F1,2257=95.0++++ | F1,2257=67.6−−−− | F1,2257=20.4++++ | F1,2257=17.8−−−− | 0.896 | 53.0 |
| 35 | amber list | F1,2257=110.6++++ | F1,2257=169.7−−−− | F1,2257=23.2++++ | F1,2257=22.7−−−− | 0.953 | 15.1 |
| 119 | green list | F1,2257=115.3++++ | F1,2257=89.6−−−− | F1,2257=14.9+++ | F1,2257=13.3−−− | 0.857 | 33.2 |
| 47 | 1st population quartile | F1,2257=336.0++++ | F1,2257=262.4−−−− | F1,2257=16.8++++ | F1,2257=12.6−−− | 0.760 | 62.2 |
| 47 | 1st population quartile | F1,2258=340.7++++ | F1,2258=265.7−−−− | F1,2258=26.1++++ | 0.241 | 58.2 | |
| 47 | 2nd population quartile | F1,2258=132.9++++ | F1,2258=118.8−−−− | F1,2258=5.6+ | 0.472 | 15.4 | |
| 47 | 2nd population quartile | F1,2259=156.8++++ | F1,2259=139.0−−−− | 0.316 | 14.6 | ||
| 47 | 2nd population quartile | F1,2257=130.1++++ | F1,2257=116.5−−−− | F1,2257=9.4+++ | F1,2257=8.0−− | 0.212 | 18.4 |
| 47 | 3rd population quartile | F1,2258=39.9++++ | F1,2258=18.7+++ | F1,2258=19.9−−− | 0.782 | 8.3 | |
| 48 | 4th population quartile | F1,2259=4.9+ | F1,2259=37.0−−−− | 0.391 | 7.4 | ||
| 48 | 4th population quartile | F1,2257=45.5++++ | 0.290 | 0.7 | |||
| 48 | 4th population quartile | F1,2258=6.2+ | F1,2258=4.8− | F1,2258=39.2−−−− | 0.237 | 7.6 | |
| 47 | 1st mass quartile | F1,2258=127.2++++ | F1,2258=98.5−−−− | F1,2258=24.4++++ | 0.599 | 39.3 | |
| 47 | 1st mass quartile | F1,2257=123.2++++ | F1,2257=95.1−−−− | F1,2257=12.3+++ | F1,2257=9.0−− | 0.401 | 40.6 |
| 47 | 2nd mass quartile | F1,2259=165.1++++ | F1,2259=144.6−−−− | 0.746 | 16.8 | ||
| 48 | 3rd mass quartile | F1,2259=63.6++++ | F1,2259=42.72−−−− | 0.660 | 35.2 | ||
| 48 | 3rd mass quartile | F1,2257=53.3++++ | F1,2257=35.3−−−− | F1,2257=13.2+++ | F1,2257=12.4−−− | 0.231 | 42.5 |
| 47 | 4th mass quartile | F1,2259=86.6++++ | F1,2259=82.0−−−− | 0.508 | 9.6 | ||
| 47 | 4th mass quartile | F1,2257=84.1++++ | F1,2257=80.7−−−− | F1,2257=12.6+++ | F1,2257=13.8−−− | 0.416 | 72.7 |
| 28 | farmland | F1,2258=93.3++++ | F1,2258=52.1−−−− | F1,2258=9.3++ | 0.841 | 69.3 | |
| 49 | woodland | F1,2258=175.8++++ | F1,2258=145.7−−−− | F1,2258=33.9++++ | 0.525 | 39.0 | |
| 49 | woodland | F1,2257=168.3++++ | F1,2257=139.0−−−− | F1,2257=13.7+++ | F1,2257=9.4−− | 0.475 | 40.8 |
| 112 | other habitats | F1,2257=63.3++++ | F1,2257=60.7−−−− | F1,2257=9.8++ | F1,2257=11.5−−− | 0.757 | 10.8 |
| 43 | niche breadth (broad) | F1,2258=141.2++++ | F1,2258=76.3−−−− | F1,2258=20.0++++ | 0.954 | 76.7 | |
| 42 | niche breadth (narrow) | F1,2257=245.5++++ | F1,2257=244.9−−−− | F1,2257=15.9+++ | F1,2257=14.5−− | 0.743 | 27.2 |
| 43 | niche position (low) | F1,2258=288.8++++ | F1,2258=218.8−−−− | F1,2258=20.8++++ | 0.785 | 58.7 | |
| 43 | niche position (low) | F1,2257=284.8++++ | F1,2257=215.9−−−− | F1,2257=10.7++++ | F1,2257=7.7−−−− | 0.214 | 62.3 |
| 42 | niche position (high) | F1,2258=148.0++++ | F1,2258=117.1−−−− | F1,2258=15.5++++ | 0.869 | 40.4 | |
| 16 | herbivores | F1,2257=64.7++++ | F1,2257=40.8−−−− | F1,2257=27.5++++ | F1,2257=26.7−−−− | 0.958 | 52.1 |
| 64 | Omnivores | F1,2257=102.7++++ | F1,2257=73.3−−−− | F1,2257=27.4++++ | F1,2257=24.2−−−− | 0.998 | 49.7 |
| 81 | Predators—inverts | F1,2259=148.4++++ | F1,2259=126.4−−−− | 0.770 | 13.9 | ||
| 28 | Predators—verts | F1,2259=76.0++++ | F1,2259=77.9−−−− | 0.968 | 8.2 |
Model fit was assessed using the Akaike Information Criteria (AIC), smaller values indicate a better fit. The model weight is the probability that the model provides the best fit to the data; we present all models with weights greater than 0.2. Explanatory power is indicated by the r2 values from general linear models. Models use either summer or annual measures of temperature and NDVI according to which measure provided the best fit to the data in tests that used a single energy metric as a predictor (see table 1). ++++p<0.0001, +++p<0.001, ++p<0.01, +p<0.05; Negative effects −−−−p<0.0001, −−−p<0.001, −−p< 0.01, − p<0.05.