Figure 3.

Relationships between the extent of surrounding habitat and the species richness of breeding forest birds (a) all species, (b) residents, (d) short‐distance migrants, (e) long‐distance migrants and breeding grassland birds (c) all species, (f) long‐distance migrants. Dots indicate data derived at each site. Lines reflect the estimates afforded by the best spatial models (solid lines indicate semi‐partial R ² of either the temperature and its squared term >0.1, and broken lines indicate that of both the temperature and its squared term <0.1). We used a GLMM (a multivariate analysis), and the effects of the other explanatory variables were considered and fixed to mean values in each figure. See details of the best spatial models in Table 1. Abbreviations: All, all species; LD, long‐distance migrants; SD, short‐distance migrants; Surrounding habitat: the extent of surrounding habitat within 1.25 km (a, b, d, e) and 5 km (c, f)