Predictor Importance Values for overcup oak (Quercus lyrata)

Predictor Name	Importance Score	Rank
Annual precipitation (mm)	13.45	21
Mean May-September precipitation (mm)	13.86	17
Mean annual temperature (°C)	11.69	30
Mean May-September temperature (°C)	11.78	28
Mean temperature of coldest month (°C)	13.93	16
Mean temperature of warmest month (°C)	14.39	14
Annual aridity index	15.25	10
Minimum elevation	11.05	32
Maximum elevation	13.17	22
Average elevation	9.32	36
Median elevation	8.86	37
Range of elevation	12.31	24
Elevation coefficient ofvariation	15.53	9
Elevation standard deviation	10.7	33
Annual daylength coefficient of variation	15.69	8
Total available water capacity (cm, to 150 cm)	13.68	20
Total available water supply (cm, to 150 cm)	14.9	11
Depth to water table (cm)	12.04	25
Soil permeability rate (cm/hr)	11.88	26
Soil calcium carbonate (% by weight)	11.82	27
Soil cation-exchange capacity	7.56	39
Soil pH	16.04	7
Soil bulk density (g/cm3)	17.87	4
Organic matter content (% by weight)	18.67	3
Potential soil productivity	12.8	23
Soil erodibility factor, rock fragment free	11.49	31
Soil erosion by wind (tons/acre/year)	14.51	13
Percent soil passing sieve No. 10 (coarse)	21.26	1
Percent soil passing sieve No. 200 (fine)	7.06	41
Percent clay (< 0.002 mm size)	16.46	5
Percent sand (< 0.002 mm size)	7.34	40
Percent silt (< 0.002 mm size)	16.21	6
Percent of texture clayey	8.24	38
Percent of texture loamy	14.38	15
Percent of texture sandy	11.7	29
Percent of texture other	10.35	34
Alfisol (%)	13.84	18
Aridisol (%)	-1	45
Entisol (%)	5	43
Histosol (%)	5.8	42
Inceptisol (%)	19.64	2
Mollisol (%)	9.61	35
Spodosol (%)	4.21	44
Ultisol (%)	14.58	12
Vertisol (%)	13.7	19