Table 5 Results of two analyses of covariance to test the effect of tree species (tree) and nest part (i.e. cup lining or outer nest), with latitude and longitude as covariates, on the mass of leaf from the four commonest tree species, and bark from four commonest plant species found in nests (see Fig. 5)
Source | Leaf (R2 = 49.1%) | Bark (R2 = 10.2%) | ||
|---|---|---|---|---|
df | F value (p value) | df | F value (p value) | |
Latitude | 12,575 | 3.13 (0.077) | 1,2575 | 3.68 (0.055) |
Longitude | 12,575 | 9.59 (0.862) | 1,2575 | 2.67 (0.103) |
Tree | 12,575 | 23.91 (< 0.001) | 3,2575 | 7.04 (< 0.001) |
Nest part | 32,575 | 1.19 (0.275) | 1,2575 | 5.08 (0.024) |
Latitude × longitude | 12,575 | 3.04 (0.081) | 1,2575 | 2.53 (0.112) |
Latitude × tree | 32,575 | 22.45 (< 0.001) | 3,2575 | 6.97 (< 0.001) |
Latitude × nest part | 12,575 | 1.31 (0.252) | 1,257 | 5.00 (0.025) |
Longitude × tree | 32,575 | 21.88 (< 0.001) | 3,2575 | 5.24 (0.001) |
Longitude × nest part | 12,575 | 1.85 (0.174) | 1,2575 | 4.53 (0.033) |
Nest part × tree | 32,575 | 73.59 (< 0.001) | 3,2575 | 2.26 (0.079) |
Latitude × longitude × tree | 32,575 | 21.40 (< 0.001) | 3,2575 | 5.22 (0.001) |
Latitude × longitude × nest part | 32,575 | 1.85 (0.174) | 1,2575 | 4.51 (0.034) |