Zoom in and explore the northern boreal forests of western Canada on Google Earth and you’ll see long straight lines making their way through the forest. These lines are cleared trails through the forest to extract resources, creating roads for forestry and seismic lines searching for underground oil and gas deposits.

Now picture yourself faced with the task of moving across this landscape: Will you push your way through dense trees and underbrush, or will you choose to walk on the trails?

Like humans, wolves often choose the path of least resistance, moving faster and farther on human-created trails through the forest. Increased wolf movement is believed to play an important role in the decline of the threatened boreal woodland caribou— an iconic species in Canada (just look at the quarter in your pocket).

When wolves move farther, they encounter their prey more frequently, and caribou are being hunted by wolves at rates they cannot sustain.

See the full article here