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Table 4 Summary of model statistics from regression analysis of fire severity effects on brush mouse (Peromyscus boylii) 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{oak cover} 3 35.25 0.00 0.73
Abundance{oak cover + patch squareness} 4 39.13 3.89 0.10
Abundance{oak cover + edge distance} 4 41.07 5.83 0.04
Abundance{oak cover + patch perimeter} 4 41.09 5.85 0.04
Abundance{trap week} 3 41.28 6.04 0.04
Abundance{patch squareness} 3 43.48 8.24 0.01
Abundance{edge distance} 3 43.93 8.68 0.01
Abundance{patch perimeter} 3 44.32 9.08 0.01
Abundance{fire severity} 3 44.39 9.15 0.01
Abundance{shrub cover} 3 44.41 9.16 0.01
Abundance{trap year} 3 44.44 9.19 0.01
Abundance{fire severity + patch squareness} 4 47.75 12.50 0.00
Abundance{edge distance + patch squareness} 4 48.83 13.58 0.00
Abundance{shrub cover + patch squareness} 4 49.33 14.08 0.00
Abundance{edge distance + patch perimeter} 4 49.69 14.44 0.00
Abundance{fire severity + patch perimeter} 4 49.79 14.54 0.00
Abundance{shrub cover + edge distance} 4 49.93 14.68 0.00
Abundance{edge distance + fire severity} 4 49.93 14.68 0.00
Abundance{shrub cover + patch perimeter} 4 50.19 14.94 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 (ΔAICc), 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).