Table 2.

MaxEnt Jackknife of variable importance. The values represent the training gains when the variable is used in isolation (“with only”) and when the variable is excluded (“without”). Gain represents the fit between MaxEnt’s probability distribution and the distribution of the sample observation data. A variable that contributes useful information to the model would have a high gain when used in isolation. A variable that contributes unique information will have the gain reduced when it is excluded from the model. Gain with all variables equals 2.58 for 2006 and 2.61 for 2007

	2006		2007
	With only	Without	With only	Without
DShore	2.00	2.39	1.91	2.46
DEM	1.99	2.42	2.00	2.44
Slope	1.82	2.45	1.86	2.44
DBuildings	1.62	2.43	1.81	2.44
Aspect	1.43	2.44	1.44	2.45
Population	0.50	2.45	0.56	2.47
DRoad	0.01	2.16	0.01	2.17