Table 4 Independent 2-sample t-tests comparing bighorn distribution and habitat use by animals that survived or died and cause-specific mortality of bighorn sheep after the initiation of fire-mediated habitat alterations in the Seminoe Mountains, Wyoming, USA from May 2011 to June 2013.

Relative home range increase after fires (95% contour)

1.48

0.36

0.24 to 3.40

5.48

1.64

2.60 to 12.80

14

2.69

0.018

Relative home range overlap with treated areas (95% contour)

0.25

0.04

0.00 to 0.48

0.36

0.06

0.00 to 0.51

22

1.51

0.146

Selection for treated habitat (change in proportion of locations within treated areas after fires)

0.06

0.07

−0.41 to 0.38

0.08

0.05

−0.09 to 0.28

14

0.26

0.801

Cause-specific mortality

Poor body condition

Other

Variable

Est.

SE

Range

Est.

SE

Range

d.f.

t stat

P

Relative home range increase after fires (95% contour)

5.08

2.63

1.34 to 10.15

5.79

2.42

2.54 to 12.80

5

0.19

0.854

Relative home range overlap with treated area (95% contour)

0.48

0.03

0.39 to 0.53

0.26

0.07

0.00 to 0.39

7

−2.44

0.045

Selection for treated habitat (change in proportion of locations within treated areas after fires)

0.00

0.04

−0.09 to 0.05

0.15

0.06

0.00 to 0.29

5

1.81

0.130