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Fire regimes of mixed dwarf sagebrush communities


Citation:
U.S. Department of Agriculture, Forest Service, Missoula Fire Sciences Laboratory. 2012. Information from LANDFIRE on fire regimes of mixed dwarf sagebrush communities. In: Fire Effects Information System, [Online]. U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Missoula Fire Sciences Laboratory (Producer). Available: www.fs.fed.us/database/feis/fire_regimes/Mixed_dwarf_sagebrush/all.html [].

A black sagebrush community below the Pequop Mountains, northeastern NV. Creative Commons image by Matt Lavin from Bozeman, Montana.

A complete Fire Regime Synthesis for mixed dwarf sagebrush communities has not been published in the Fire Effects Information System. However, information is available from LANDFIRE succession modeling of Biophysical Settings (BpS). Table 1 summarizes LANDFIRE data on the BpSs in mixed dwarf sagebrush communities. Figure 1 shows where they occur. Table A1 lists the BpSs and the results of LANDFIRE succession modeling for each BpS in mixed dwarf sagebrush communities, and table A2 lists shrub species commonly dominant in dwarf sagebrush communities. The Pacific Southwest Research Station, Forest Service, U.S. Department of Agriculture [4] provides a review and synthesis of the historical range of variability of sagebrush communities of California.

Table 1. Modeled fire intervals and severities in mixed dwarf sagebrush communities [3].
Fire interval¹
Fire severity² (% of fires)
Number of Biophysical Settings (BpSs) in each fire regime group
  Replacement Mixed Low I II III IV V NA³
79-1,250 years 33-100 0-67 0 0 0 35 2 12 0
¹Average historical fire-return interval derived from LANDFIRE succession modeling (labeled "MFRI" in LANDFIRE).
²Percentage 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% [1,2].
³NA (not applicable) refers to BpS models that did not include fire in simulations.

Figure 1. Land cover distribution of mixed dwarf sagebrush communities based on the LANDFIRE Biophysical Settings (BpS) data layer [3]. Numbers indicate LANDFIRE map zones. LANDFIRE did not map every BpS in this group. Click on the map for a larger image and zoom in to see details.

Table A2—Names of shrub species dominant in dwarf sagebrush communities. Links go to FEIS Species Reviews.
Common name Scientific name
antelope bitterbrush Purshia tridentata
Bigelow sagebrush Artemisia bigelovii
black greasewood Sarcobatus vermiculatus
black sagebrush Artemisia nova
broom snakeweed Gutierrezia sarothrae
fourwing saltbush Atriplex canescens
green ephedra Ephedra viridis
low sagebrush Artemisia arbuscula
Nevada jointfir Ephedra nevadensis
rubber rabbitbrush Ericameria nauseosa
sand sagebrush Artemisia filifolia
yellow rabbitbrush Chrysothamnus viscidiflorus

References:


1. Barrett, S.; Havlina, D.; Jones, J.; Hann, W.; Frame, C.; Hamilton, D.; Schon, K.; Demeo, T.; Hutter, L.; Menakis, J. 2010. Interagency fire regime condition class guidebook (FRCC), [Online], (Version 3.0). In: Interagency fire regime condition class website. U.S. Department of Agriculture, Forest Service; U.S. Department of the Interior; The Nature Conservancy (Producers). Available: https://www.frames.gov/files/7313/8388/1679/FRCC_Guidebook_2010_final.pdf [2017, March 1]. [85876].

2. LANDFIRE Rapid Assessment. 2005. Reference condition modeling manual (Version 2.1). Cooperative Agreement 04-CA-11132543-189. Boulder, CO: The Nature Conservancy; U.S. Department of Agriculture, Forest Service; U.S. Department of the Interior. 72 p. On file at: U.S. Department of Agriculture, Forest Service, Rocky Mountain Research Station, Fire Sciences Laboratory, Missoula, MT. [66741]

3. LANDFIRE. 2008. CONUS refresh (LANDFIRE 1.1.0). Biophysical settings layer. In: LANDFIRE data distribution site, [Online]. In: LANDFIRE. U.S. Department of the Interior, Geological Survey (Producer). Available: https://landfire.cr.usgs.gov/viewer/ [2015, October 7]. [89416]

4. USDA. 2016. Sagebrush natural range of variation, [Online]. In: Pacific Region, Ecology program documents, reports and publications, Natural range of variation of Sierra Nevada habitats. Vallejo, CA: U.S. Department of Agriculture, Forest Service, Pacific Southwest Region (Producer). Available: https://www.fs.usda.gov/detail/r5/plants-animals/?cid=stelprdb5434436 [2018, September 10]. 36 p. [90944]
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