Table 4. Results of the analysis of the response of skylark abundance to rapeseed and maize areas.
| Abundance ∼ autocovariate | Abundance ∼ fixed elements + autocovariate | Abundance ∼ fixed elements + factor + autocovariate | Coefficient of the factor | Sampling influence (100 random samples on the 2/3) | ||||
|---|---|---|---|---|---|---|---|---|
| Factor | Group | AICc | Top model AICc | Top model AICc | Lower confidence interval | Upper confidence interval | % lower confidence intervals >0 | % upper confidence intervals >0 |
| Rapeseed area (ha) | Openfield east | 795.9 | 758.8 | 758.8 | −0.003 | 0.007 | 2 | 100 |
| Openfield west | 906.3 | 867.7 | 867.7 | −0.001 | 0.009 | 27 | 100 | |
| Grassland east | 430.2 | 416.5 | 416.5 | / | / | / | / | |
| Grassland west | 449.9 | 428.9 | 425.0 | 0.007 | 0.049 | 67 | 100 | |
| Maize area (ha) | Openfield east | 651.4 | 620.8 | 620.8 | / | / | / | / |
| Openfield west | 959.6 | 912.2 | 912.2 | / | / | / | / | |
| Grassland east | 633.5 | 608.7 | 590.2 | −0.052 | −0.024 | 0 | 2 | |
| Grassland west | 535.5 | 520.8 | 515.3 | −0.021 | −0.005 | 0 | 17 | |
Notes.
- /
- factor not retained in the top models