Figure 1

Study area and routes surveyed. Study sites and routes surveyed (black lines) in altitudinal grasslands (AGs) and on the coastal plain (CP) in Rio Grande do Sul, southern Brazil. Light gray areas are at elevations up to 760 m, and dark gray areas are above 760 m. Transect lengths: T1 = 54.5 km, T2 = 58.6 km, T3 = 55.0 km, and T4 = 55.4 km.