Table 4 Anderson-Darling statistical output for comparisons of burned and unburned samples (see Fig. 6 and Table 3), for the Madrean Ecoregion Sky Islands, US and Mexico. The standard deviation for the Anderson-Darling test statistic (AD.T) was 0.76, and the null hypothesis that all samples came from a common population was rejected in all comparisons (P < 0.001). Variables with density plots in Fig. 6 are shown in bold. Number of ties refers to the number of times identical values occur in the data. If too many ties occur, there will be a rejection of the null hypothesis and the result will suggest non-normality
Variable | US | Mexico | ||
|---|---|---|---|---|
number of ties | AD.T | number of ties | AD.T | |
Road density | 12091 | 144.57 | 23579 | 240.86 |
Population density | 4189 | 114.84 | 8005 | 406.53 |
Terrain ruggedness | 4092 | 466.68 | 7980 | 718.02 |
Lightning flash date | 12191 | 358.16 | 23579 | 583.9 |
AHM | 0 | 1203.7 | 0 | 1995.4 |
bFFP | 486 | 753.27 | 598 | 2913.2 |
CMD | 0 | 894.15 | 0 | 2690.6 |
DD_0 | 832 | 829.36 | 2171 | 2761.7 |
DD_18 | 0 | 881.7 | 0 | 2982 |
DD18 | 0 | 960.42 | 0 | 3239.8 |
DD5 | 0 | 934.04 | 0 | 3150.1 |
eFFP | 1453 | 666.9 | 2233 | 2447.1 |
EMT | 199 | 677.34 | 85 | 2367.5 |
Eref | 2 | 607.38 | 0 | 3172.2 |
EXT | 51 | 981.68 | 113 | 3069.2 |
FFP | 216 | 736.15 | 256 | 2748.7 |
MAP | 4 | 1079.3 | 2 | 528.65 |
MAT | 194 | 932.23 | 141 | 3137.8 |
MCMT | 539 | 786.1 | 251 | 2530.3 |
MSP | 5 | 1021.7 | 28 | 128.37 |
MWMT | 78 | 986.16 | 105 | 3035 |
NFFD | 348 | 705.34 | 666 | 2678.3 |
PAS | 6472 | 1118.2 | 17124 | 3853.6 |
PPT_sm | 25 | 972.95 | 51 | 78.771 |
PPT_wt | 144 | 569.68 | 263 | 1061.5 |
RH | 3831 | 59.104 | 13584 | 23.661 |
SHM | 0 | 1134.5 | 0 | 1137.3 |
Tave_sm | 93 | 972.75 | 103 | 3190.6 |
Tave_wt | 481 | 820.88 | 228 | 2721.8 |
TD | 485 | 451.81 | 1111 | 134.93 |