Table 1.

Proportion of variable occurrence at specific nodes in the classification trees used to determine the influence of abiotic, biotic, and human-mediated factors in determining the worldwide distribution of the Argentine ant

Rank	Climatic suitability	Leptomyrmecini diversity	Bothriomyrmecini diversity	Dolichoderini diversity	Tapinomini diversity	Human footprint	Human trade
1	1	0	0	0	0	0	0
2	0	0	0	0	0	1	0
3	0	1	0	0	0	0	0
4	0	0	0.12	0.76	0.12	0	0.01
5	0	0	0.67	0.16	0.15	0	0.01
6	0	0	0.18	0.07	0.70	0	0.04
7	0	0	0.03	0	0.03	0	0.94

The values correspond to the number of times that the variable first appeared at that specific rank order (or subdivision of the classification tree), on the basis of 1,000 replicate models that differ in the original subset of occurrence data used to calibrate them.