Table 1 Summary of statistical analysis of 'jackknife procedure' used to determine environmental importance of ecological parameters (re-printed with permission from [2]).
From: A method for statistically comparing spatial distribution maps
N-1 Excluded Parameter | Difference from Comprehensive Map | |||||
|---|---|---|---|---|---|---|
| Â | Mean | Std Dev | t Value | Pr > |t| | % | Kappa |
Aspect | 0.227 | 1.1201 | 75.25 | < .0001 | 14.90913 | 0.8471 |
Diurnal Temp Range | -0.162 | 1.462 | -41.09 | < .0001 | 16.00786 | 0.8074 |
Elevation | -0.266 | 1.265 | -78.19 | < .0001 | 14.59951 | 0.8366 |
Flow Accumulation | -0.014 | 0.9739 | -5.36 | < .0001 | 12.44882 | 0.8683 |
Flow Direction | -0.362* | 1.0288 | -130.6* | < .0001 | 11.30027 | 0.818 |
Frost Days | -0.005 | 1.0807 | -1.62 | 0.1063§ | 13.99543 | 0.8562 |
Land Cover | 0.3947* | 1.1047 | 132.67* | < .0001 | 15.73201 | 0.8418 |
Precipitation | -1.484* | 2.1541* | -255.8* | < .0001 | 26.04734* | 0.6299± |
Minimum Temp | 0.2259 | 1.0138 | 82.75 | < .0001 | 13.24499 | 0.8606 |
Mean Temp | -0.204 | 1.1033 | -68.74 | < .0001 | 13.09959 | 0.8392 |
Maximum Temp | -0.298 | 1.4251 | -77.65 | < .0001 | 13.2078 | 0.8063 |
Topographic Index | -0.026 | 0.957 | -9.94 | < .0001 | 12.70847 | 0.8627 |
Wet Days | -0.134 | 1.2503 | -39.82 | < .0001 | 14.66416 | 0.833 |