• Milky Way across Theodore Roosevelt National Park

    Theodore Roosevelt

    National Park North Dakota

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  • Road Construction

    Visitors to the South Unit may experience up to 30 minute delays and rough road conditions due to road construction along East River Road. Construction is expected to be complete by October 1. Check back for updates Updated 08/13/2014 5:16 pm MT

Prairies and Grasslands

Prairie grass

NPS

Grasslands are the most abundant habitat type found in Theodore Roosevelt National Park. Grasses are able to cope with the low annual precipitation, going dormant as the relatively wet spring gives way to the dry, hot summer. At first glance, grasslands may appear monotonous, but, in fact, the grasslands encompass a rich and constantly changing diversity of plants and animals.

A native grasses and many species of forbs and shrubs comprise the most diverse array of plant life in the park. Grasses including saltgrass, Western wheatgrass, needle-and-thread, and little bluestem provide valuable forage for many grazing animals including bison, wild horses, elk, mule deer, and prairie dogs, not to mention a rich array of insect life. The grazing animals and insects of the grassland in turn attract predators; prairie dogs are under constant threat from badgers, coyotes, hawks, and eagles, and insects are eaten by birds such as flycatchers and swallows.

Over time, woodier plants such as sagebrush and wild rose become established in grasslands, changing the forage available to grazing animals. Periodic fire, whether natural or prescribed by the park, is necessary to improve habitat and forage diversity. Fires reduce woody vegetation and allow early successional grasses and forbs to re-establish themselves.

Did You Know?

Weeds

Theodore Roosevelt National Park combats several invasive, non-native plants including leafy spurge, Canada thistle, knapweed, black henbane, and salt cedar through biological and chemical controls. More...