Because of it's abundance in vegetation an wildlife, it plays a crucial role in survival of many species. The alpine zone is found at higher elevations above timberline. Although BNP covers a vast area, some parts of the park are more heavily used than others, including the backcountry. That is why the park is subdivided internally to better manage areas in terms of visitor use, and wildlife conservation. The trail system in this respect, varies from region to region within the park.
Water levels are also at their highest due to spring run-off.
Beware of ticks in dry slopes where ungulates congregate. Trails generally tend to be muddier at this time with spring melt, and June being the month to receive the greatest volume of precipitation. Towards the middle of July passes should be open. Watch out for berry patches during August, particularly buffalo berry which is a major food source for bears. Extreme caution should be used when traveling through these areas.