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Fire regimes of mediterranean mixed-evergreen communities

Citation:
U.S. Department of Agriculture, Forest Service, Missoula Fire Sciences Laboratory. 2012. Information from LANDFIRE on fire regimes of mediterranean mixed-evergreen 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.usda.gov/database/feis/fire_regimes/Mediterranean_mixed_evergreen/all.html [].

A complete Fire Regime Synthesis for mediterranean mixed-evergreen 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 mediterranean mixed-evergreen communities. Figure 1 shows where they occur. Table A1 lists the BpSs and the results of LANDFIRE succession modeling for each BpS in mediterranean mixed-evergreen communities. See the FEIS Fire Regime Synthesis on montane riparian communities of California and southwestern Oregon for detailed information on fire regimes in hardwood and conifer riparian communities, and the Fire Regime Synthesis on hardwood communities in the Sierra Nevada for information on mixed-evergreen and other hardwood communities in that location.

Table 1. Modeled fire intervals and severities in mediterranean mixed-evergreen 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
8 years 2-3 13-22 76-84 6 0 0 0 0 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. Distribution of mediterranean mixed-evergreen communities based on the LANDFIRE Biophysical Settings (BpS) data layer [3]. Click on the map for a larger image.

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]
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