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Table 3 Summary of model statisticsa from regression analysis of fire severity effectsb on deer mouse (Peromyscus maniculatus) abundance in Yosemite National Park, California, 2004 and 2005 (n = 10). Models are listed from best to poorest fit.

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

Model description K AICc ΔAIC c w i
Abundance{fire severity} 3 62.96 0.00 0.25
Abundance{oak cover} 3 64.00 1.04 0.15
Abundance{patch perimeter} 3 64.01 1.04 0.15
Abundance{canopy cover} 3 65.09 2.13 0.08
Abundance{shrub cover} 3 65.71 2.74 0.06
Abundance{oak cover + patch perimeter} 4 65.80 2.84 0.06
Abundance{patch squareness} 3 66.15 3.19 0.03
Abundance{edge distance} 3 66.94 3.97 0.03
Abundance{trap week} 3 67.06 4.01 0.03
Abundance{trap year} 3 67.10 4.14 0.03
Abundance{edge distance + oak cover} 4 67.71 4.75 0.02
Abundance{fire severity + patch perimeter} 4 68.68 5.71 0.01
Abundance{oak cover + patch squareness} 4 68.74 5.78 0.01
Abundance{fire severity + patch squareness} 4 68.76 5.79 0.01
Abundance{edge distance + fire severity} 4 68.96 5.99 0.01
Abundance{canopy cover + patch perimeter} 4 69.14 6.17 0.01
Abundance{canopy cover + edge distance} 4 69.88 6.92 0.01
Abundance{edge distance + patch perimeter} 4 69.94 6.98 0.01
Abundance{canopy cover + patch squareness} 4 70.89 7.92 0.00
Abundance{edge distance + patch squareness} 4 71.94 8.97 0.00
  1. a Statistics include: number of parameters (K) in the model, Akaike’s Information Criterion corrected for small sample size (AICc), relative AICc (ΔAIC c ), and Akaike weights (w i ).
  2. b Model effects were measured on individual trapping area level and include: total fire severity index (fire severity), sum of the perimeter of all fire severity patches (patch perimeter), patch squareness of fire severity patches (squareness), distance to nearest unburned edge (edge distance), total overstory canopy cover (canopy cover), shrub cover, and oak cover (oak tree cover).