Table 1. Fitted dispersal speeds (km/yr), and statistics for each ecoregion and corridor, for the two pre-existing models and for the best-fit GA models with and without savanna corridor.

Speeds (km/yr) on:	‘Deep Split’ Model	‘Rivers and Coasts’ Model	GA best-fit w/o corridor	GA best-fit w/corridor
Congo River	0.09	0.98	0.31	1.39
Zambezi River	0.88	0.20	5.28	4.32
Coasts	1.76	0.98	0.36	0.03
Rainforest	0.09	0.10	0.09	0.05
Savannah	0.88	0.98	0.66	0.39
Forests	0.88	0.20	5.28	3.69
Rainforest Boundary	0.88	N/A	0.14	0.03
Montane	0.88	0.20	0.11	0.11
Pearson’s correlation coeff. r	−0.521	−0.5075	−0.639	−0.669
Aikaike Information Criterion	440.74	439.50	434.14	430.13