Extended Data Fig. 2: The latitudinal gradient in average dispersal limitation of bird assemblages.
From: Climate-driven variation in dispersal ability predicts responses to forest fragmentation in birds
Data points (coloured by level of historical disturbance) show the community mean values for avian assemblages sampled at 31 study landscapes mapped in Fig. 1. The overall gradient is not explained by landscape disturbance history. Absolute latitude is the centroid latitude of all sampling points in each study landscape. Mean dispersal limitation is the negative (that is inverse) hand-wing index (nHWI) averaged across all species in the assemblage; nHWI is logarithmically scaled (log(1/HWI)) for visualization. Statistics are from a linear model with Gaussian errors; purple line shows model fit (R2 = 0.44); shaded region shows the standard error of the regression coefficient.
