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Table 6 Correlation of the explanatory variables to the ordination axes derived from species data by state (Kendall’s tau statistic, Ƭ) for wildfire sites in Montana, Idaho, and Washington, USA, that burned in July and August between 2003 and 2007. Explanatory variables are: elevation, index of burn severity (dNBR), transformed aspect (trasp), overstory canopy cover (cc), length of frost-free period (ffp), mean annual temperature (mat), mean maximum temperature of the warmest month (mmax), mean minimum temperature of the coldest month (mmin), mean annual precipitation (map), growing season precipitation (gsp), summer precipitation (smrp), spring precipitation (sprp), and winter precipitation (winp). Correlations in bold (Ƭ > 0.200) are shown as vectors in Fig. 3

From: Does burn severity affect plant community diversity and composition in mixed conifer forests of the United States Intermountain West one decade post fire?

 Montana firesIdaho firesWashington fires
VariableAxis 1ƬAxis 2ƬAxis 3ƬAxis 1ƬAxis 2ƬAxis 3ƬAxis 1ƬAxis 2ƬAxis 3Ƭ
elevation0.0900.0980.2290.0500.6030.2120.583−0.150−0.117
dNBR0.224−0.220.354−0.018−0.1110.099−0.0170.5500.250
trasp0.005−0.2020.0410.2220.117−0.145−0.1330.067−0.000
cc−0.1230.2820.270−0.250−0.081−0.1250.117−0.0500.550
ffp−0.097−0.0920.175−0.039−0.5750.270−0.6000.1330.133
gsp0.3340.185−0.059−0.0480.2820.2700.594−0.142−0.126
map0.3160.194−0.079−0.1090.2340.2020.567−0.133−0.133
mat−0.293−0.1510.171−0.008−0.6130.254−0.6000.1330.133
mmax−0.322−0.1780.1590.057−0.5580.259−0.6000.1330.133
mmin−0.237−0.1020.059−0.089−0.574−0.218−0.6000.1330.133
smrp0.2980.149−0.042−0.0810.4100.3040.600−0.133−0.100
sprp0.3330.216−0.140−0.1290.1250.1450.594−0.142−0.126
winp0.3070.193−0.076−0.1070.377−0.0710.517−0.150−0.117