Colorado's Forest Types

Oak shrublands cover approximately 2 million acres in Colorado between elevations of approximately 6,000 and 9,000 feet.

Oak Shrublands

Map showing oak shrublands in Colorado. Click on map for larger version (185 KB PDF).

These shrublands account for 10 percent of the forested lands in Colorado and are found throughout most of western Colorado, along the southern Front Range and in the central part of the state. Their appearance can range from dense thickets with little understory to relatively moist sites with a rich understory of shrubs, grasses and wildflowers.

Gambel oak

Fire usually plays an important role in maintaining oak shrublands; it promotes regeneration, controls the invasion of trees, and increases the density and cover of Gambel oak (Quercus gambelii) and serviceberry (CNHP 2009)1. Many of these landscapes currently suffer from altered fire regimes due to extensive fire suppression, especially in the wildland-urban interface. Wildlife species associated with oak shrublands include sharp-tailed grouse, mule deer, elk, Abert’s squirrels, black bears, blue grouse and Merriam’s turkey.

Text Citation

1Colorado Natural Heritage Program. 2009. Ecological systems descriptions. Available online at http://cnhp.colostate.edu/download/projects/eco_systems/eco_systems.asp.

Learn about Gambel oak management (1.3 MB PDF)