Fig. 9.3 The number of train strikes (white bars) for a elk; b deer; and c bear, compared to the
expected number of strikes (gray bars, a positive value) based on the abundance of wildlife signs
along each 4.86 km segment using perpendicular transects; d compares on-track relative
abundance for bears to number of strikes. Hotspots are segments with a strike count above the 95%
confidence interval (gray dashed line) and high-risk segments are those with a risk estimate
significantly above 1.0 (black points and error bars). Gray points are risk estimates not
significantly different from 1.0 (the number killed was close to the number expected based on
wildlife abundance). Segments proceed west to east, where 0 is the first 4.86 km inside the western
boundary of Yoho National Park. The field town site is located at segment 6, the Lake Louise town
site corresponds to segment 13, and the Banff town site segment 24
9 Relative Risk and Variables Associated with Bear and Ungulate …
145
expected number of strikes (gray bars, a positive value) based on the abundance of wildlife signs
along each 4.86 km segment using perpendicular transects; d compares on-track relative
abundance for bears to number of strikes. Hotspots are segments with a strike count above the 95%
confidence interval (gray dashed line) and high-risk segments are those with a risk estimate
significantly above 1.0 (black points and error bars). Gray points are risk estimates not
significantly different from 1.0 (the number killed was close to the number expected based on
wildlife abundance). Segments proceed west to east, where 0 is the first 4.86 km inside the western
boundary of Yoho National Park. The field town site is located at segment 6, the Lake Louise town
site corresponds to segment 13, and the Banff town site segment 24
9 Relative Risk and Variables Associated with Bear and Ungulate …
145