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Fire Regime - Report

Fire regimes of Rocky Mountain western redcedar communities

Written
March, 2026
Fire Regime Type
Report

U.S. Department of Agriculture, Forest Service, Missoula Fire Sciences Laboratory. 2026. Fire regimes of Rocky Mountain western redcedar communities. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Missoula Fire Sciences Laboratory (Producer). Available: https://research.fs.usda.gov/feis/fire-regimes/rocky-mountain-western-redcedar

A complete Fire Regime Synthesis for Rocky Mountain western redcedar communities has not yet been published in the Fire Effects Information System. However, LANDFIRE succession modeling of Rocky Mountain western redcedar Biophysical Settings (BpS) provides estimates of fire regime characteristics (see LANDFIRE Biophysical Settings section). Figure 1 shows where these BpSs occur.

A map showing the distribution of Rocky Mountain western redcedar communities in Idaho and Montana.
Photo Credit
Map based on the LANDFIRE (2020) BpS data layer [1].

Figure 1—Land cover distribution of Rocky Mountain western redcedar Biophysical Settings (BpS).

2020 LANDFIRE Biophysical Settings — Historical Fire Regime Characteristics
Biophysical SettingMean Fire Interval (years)Fire Severity Percent (%)
CodeFire Regime GroupLowMixedReplacementAllLowMixedReplacement
Series 10472 - Northern Rocky Mountain Mesic Montane Mixed Conifer Forest - Cedar Groves
10472_10_19V-A199037431501684
Summary
Minimum199037431501684
Maximum199037431501684
Mean199037431501684
Median199037431501684
Percentage of fires in 3 fire severity classes, derived from LANDFIRE succession modeling. Replacement-severity fires cause >75% kill or top-kill of the upper canopy layer; mixed-severity fires cause 26%-75%; low-severity fires cause <26%.
LANDFIRE. 2020. Biophysical settings models and descriptions, [Online]. Washington, DC: U.S. Department of Agriculture, Forest Service; U.S. Department of the Interior; U.S. Geological Survey; Arlington, VA: The Nature Conservancy, (Producers). Available: https://www.landfirereview.org/search.php [96496]

1. LANDFIRE. 2020. Biophysical settings layer, CONUS (LANDFIRE 2.2.0). In: LANDFIRE download data mosaic products, [Online]. U.S. Department of the Interior, Geological Survey; U.S. Department of Agriculture (Producer). Available: https://www.landfire.gov/version_download.php [2023, June 20]. [98050]

2. LANDFIRE. 2020. Biophysical settings models and descriptions, [Online]. Washington, DC: U.S. Department of Agriculture, Forest Service; U.S. Department of the Interior; U.S. Geological Survey; Arlington, VA: The Nature Conservancy, (Producers). Available: http://www.landfirereview.org/search.php [2022, February 2]. [96496]

Last updated April 28, 2026