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Table 1 Vegetation and fire severity patch characteristics at 10 small mammal trapping areas in Yosemite National Park, California.

From: Modeling the Effects of Fire Severity and Spatial Complexity on Small Mammals in Yosemite National Park, California

Site number Canopy cover (%)a Shrub cover (%)a Oak tree cover (%)a Fire severity indexb Total severity patch perimeter (m)c Severity patch squareness indexd Distance to nearest unburned edge (m)
1 80 26 0.3 1.41 30 660 0.84 228.5
2 65 6 9.3 1.68 26 220 0.81 173.3
3 57 0 1.8 1.76 29 580 0.81 228.3
4 79 3 1.8 2.07 21 360 0.72 876.0
5 79 2 0.0 2.10 18 240 0.67 917.4
6 52 0 4.1 2.20 20 820 0.77 302.6
7 76 2 0.0 2.73 22 260 0.75 4436.2
8 47 7 3.7 2.97 15 600 0.48 729.5
9 50 6 0.0 3.13 23 400 0.76 683.6
10 36 7 3.6 3.46 16 380 0.61 571.2
  1. a Vegetation characteristics ocularly estimated using aerial photographs and stereoscope; canopy cover refers to total cover of all tree species.
  2. b Fire severity index = amount of area within the boundary of a fire × that area’s estimated fire severity code (Miller and Thode 2007), where each polygon was assigned one of the following: 1 = unchanged, 2 = low severity, 3 = moderate severity, and 4 = high severity.
  3. c Total severity patch perimeter = sum of the perimeter of all of the fire severity polygons within the trapping area.
  4. d Patch squareness is an index representing how square the patches are for a trapping area, 0 = square, 1 = least square-like.