Predictor Importance Values for swamp tupelo (Nyssa biflora)

Predictor Name	Importance Score	Rank
Annual precipitation (mm)	22.8	1
Mean May-September precipitation (mm)	14.54	31
Mean annual temperature (°C)	14.7	29
Mean May-September temperature (°C)	14.32	33
Mean temperature of coldest month (°C)	16.48	20
Mean temperature of warmest month (°C)	14.01	34
Annual aridity index	13.16	36
Minimum elevation	16.98	17
Maximum elevation	19.53	11
Average elevation	19.09	13
Median elevation	12.28	37
Range of elevation	14.51	32
Elevation coefficient ofvariation	19.8	10
Elevation standard deviation	20.75	8
Annual daylength coefficient of variation	15.45	23
Total available water capacity (cm, to 150 cm)	16.81	19
Total available water supply (cm, to 150 cm)	15.14	26
Depth to water table (cm)	18.47	15
Soil permeability rate (cm/hr)	14.66	30
Soil calcium carbonate (% by weight)	15.82	22
Soil cation-exchange capacity	21.01	7
Soil pH	15	27
Soil bulk density (g/cm3)	15.18	25
Organic matter content (% by weight)	19.2	12
Potential soil productivity	16.9	18
Soil erodibility factor, rock fragment free	21.47	4
Soil erosion by wind (tons/acre/year)	15.22	24
Percent soil passing sieve No. 10 (coarse)	22.78	2
Percent soil passing sieve No. 200 (fine)	18.16	16
Percent clay (< 0.002 mm size)	21.24	5
Percent sand (< 0.002 mm size)	19.88	9
Percent silt (< 0.002 mm size)	16.18	21
Percent of texture clayey	9.86	38
Percent of texture loamy	9.22	39
Percent of texture sandy	5.09	44
Percent of texture other	18.9	14
Alfisol (%)	21.54	3
Aridisol (%)	0	45
Entisol (%)	5.9	43
Histosol (%)	13.25	35
Inceptisol (%)	14.96	28
Mollisol (%)	7.74	41
Spodosol (%)	7.7	42
Ultisol (%)	21.23	6
Vertisol (%)	8.86	40