Do Caribou Prefer Open Areas or Dense Cover?

Habitat Preferences

Caribou typically inhabit areas with minimal tree cover, such as alpine tundra, mountain ridges, and lake shores. In Alaska, these animals often congregate in open spaces like the Brooks Range, Gates of the Arctic National Park, and the Arctic National Wildlife Refuge. Research suggests that caribou prefer areas with low vegetation density, which allows them to see predators from a distance.

Migration Patterns

During migration, caribou often follow well-worn trails and traverse open areas to minimize energy expenditure. These trails, known as “drift lanes,” can be 10-20 miles wide and are often found in areas with minimal obstacles. In some cases, caribou may travel up to 3,000 miles per year, covering vast distances to reach suitable habitats and escape harsh weather conditions.

Foraging Strategies

When foraging, caribou tend to focus on areas with dense lichen growth, such as in wet meadows and along streams. These areas are rich in nutrients and provide essential sustenance for the animals. Caribou may also browse on shrubs and grasses, but lichen is a critical component of their diet. In areas with dense vegetation, caribou may use their keen sense of smell to locate food sources, often relying on their noses to detect the scent of lichen and other vegetation.