Table 2 Categories of non-weather-related independent variables (rows) summarized by post-burn damage class for the Cladonia samples (columns). Values are counts followed by proportions in parentheses. Variables entered into the feature selection algorithm are indicated by an asterisk (*)
| Â | Sample size (n) | Post-burn condition of Cladonia | ||
|---|---|---|---|---|
Intact (n) | Fragments (n) | Consumed (n) | ||
Cover type (number of sites) | ||||
 Hardwood–pine regrowth (3) | 121 | 67 (0.55) | 31 (0.26) | 23 (0.19) |
 Pre-commercial pine (1) | 41 | 1 (0.02) | 19 (0.46) | 21 (0.51) |
 Closed-canopy pine (1) | 30 | 0 (0.00) | 12 (0.40) | 18 (0.60) |
 Open-canopy pine (2) | 36 | 4 (0.11) | 13 (0.36) | 19 (0.53) |
Prior burns* (n) | ||||
 0 | 46 | 1 (0.02) | 18 (0.39) | 27 (0.59) |
 1 | 105 | 46 (0.44) | 31 (0.30) | 28 (0.27) |
 2 | 77 | 25 (0.32) | 26 (0.34) | 26 (0.34) |
Cladonia size class* (diameter) | ||||
 Small (<2.5 cm) | 47 | 18 (0.38) | 9 (0.19) | 20 (0.43) |
 Medium (2.5 to 10 cm) | 138 | 43 (0.31) | 48 (0.35) | 47 (0.34) |
 Large (>10 cm) | 43 | 11 (0.26) | 18 (0.42) | 14 (0.33) |
Cladonia position relative to forest floor* | ||||
 Above | 189 | 69 (0.37) | 54 (0.29) | 66 (0.35) |
 Within | 39 | 3 (0.08) | 21 (0.54) | 15 (0.38) |
Litter incorporated within Cladonia* | ||||
 No | 104 | 55 (0.53) | 22 (0.21) | 27 (0.26) |
 Yes | 124 | 17 (0.14) | 53 (0.43) | 54 (0.44) |
Fuel type* | ||||
 Hardwood | 77 | 39 (0.51) | 22 (0.29) | 16 (0.21) |
 Hardwood>pine | 40 | 2 (0.05) | 17 (0.43) | 21 (0.53) |
 Pine>hardwood | 59 | 3 (0.05) | 25 (0.42) | 31 (0.53) |
 Pine | 25 | 1 (0.04) | 11 (0.44) | 13 (0.52) |
 Bare soil | 27 | 27 (1.00) | 0 (0.00) | 0 (0.00) |
Fuel loading* | ||||
 Low | 26 | 23 (0.88) | 1 (0.04) | 2 (0.08) |
 Medium | 80 | 34 (0.43) | 27 (0.34) | 19 (0.24) |
 High | 122 | 15 (0.12) | 47 (0.39) | 60 (0.49) |
Fuel continuity* | ||||
 Low | 44 | 42 (0.95) | 1 (0.02) | 1 (0.02) |
 Medium | 88 | 28 (0.32) | 34 (0.39) | 26 (0.30) |
 High | 96 | 2 (0.02) | 40 (0.42) | 54 (0.56) |
Substrate* | ||||
 Soil | 36 | 26 (0.72) | 6 (0.17) | 4 (0.11) |
 Moss | 63 | 17 (0.27) | 28 (0.44) | 18 (0.29) |
 Wood | 32 | 11 (0.34) | 4 (0.13) | 17 (0.53) |
 Litter | 97 | 18 (0.19) | 37 (0.38) | 42 (0.43) |