Table 6.

Significant logistic regression models predicting presence/absence of alien species. Numbers are the regression coefficients (odds ratios) for the significant disturbance variables in each model (variable codes are given in Table 2). R² is McFaddens R² for logistic regression

Subpopulation	R2	Fill	Harden	VegRemoval	VegReplace	%Agr	%Dev	%Imp	PopDen	RoadDen
National	0.15	1.30	1.29*	1.13		1.29*			0.73*	1.30*
CPL	0.07		1.33*			1.21*				1.16
EMU	0.23	2.55			3.05	2.07*
W	0.10		1.66
EH	0.07	1.37				3.17*
EW	0.20	2.78						0.20	5.08
PRLH	0.12			1.25*		1.23*		3.27
PRLW	0.11		1.46*			1.22*	0.62*			1.75*
Depression	0.11	2.06				1.17			0.53	1.61*
Flats	0.14		1.32			1.43*
Riverine	0.08		1.43	1.23

*Variable significant in model at p < 0.001, all other variables significant at p < 0.05