Why do rams migrate in the Brooks Range?

Habitat and Nutrition

Rams in the Brooks Range migrate to areas with the highest quality forage, such as cotton grass meadows and shrub tundra. These habitats provide essential nutrients for the rams’ survival, particularly during the summer when they need to replenish energy reserves after the harsh winter. Studies have shown that rams tend to congregate in areas with high concentrations of cotton grass, which is rich in nutrients and fiber.

Migration Patterns and Timing

Rams in the Brooks Range typically begin their migrations in late May or early June, when the snow has melted and vegetation is starting to grow. They often travel in large groups, following established migration routes that may span several miles. One notable migration route in the Brooks Range follows the John River valley, where rams can be seen making their way upriver to reach prime habitats. By mid-July, rams have typically reached their summer range, where they will spend the next few months feeding and growing.

Challenges and Conservation Efforts

Rams in the Brooks Range face numerous challenges, including harsh weather conditions, habitat degradation, and human disturbance. To mitigate these impacts, conservation efforts are underway to protect and restore habitats, reduce human disturbance, and monitor ram populations. For example, the Alaska Department of Fish and Game has implemented measures to restrict access to sensitive habitats during peak ram migration periods, and has also initiated research projects to better understand ram behavior and habitat needs.