Table 3 Composite fire return interval data for the duration of the record (1700 to 2006). C01 includes all fire scars, C10 includes fires scarring two or more trees and at least 10% of the sample, C25 at least three or more trees and 25% of the sample scarred. The dash indicates that there were not enough data to complete analysis. Means followed by the same letter in the column are significantly different (p < 0.05).
Cluster | Composite | Intervals (count) | Mean (yr) | Median (yr) | Range (yr) | Fire scars (count) |
|---|---|---|---|---|---|---|
1 | C01 | 50 | 5.4a | 3.0 | 1–34 | 108 |
C10 | 22 | 9.1d | 8.0 | 1–40 | 80 | |
C25 | 10 | 14.3 | 9.0 | 5–46 | 56 | |
2 | C01 | 29 | 7.8b | 6.0 | 1–19 | 41 |
C10 | 9 | 16.2 | 17.0 | 3–33 | 21 | |
C25 | 0 | — | — | — | 3 | |
3 | C01 | 52 | 4.1bc | 3.5 | 1–36 | 69 |
C10 | 11 | 16.1 | 10.0 | 1–49 | 28 | |
C25 | 3 | 8.7 | 8.0 | 8–10 | 12 | |
4 | C01 | 28 | 8.8 | 6.0 | 1–32 | 47 |
C10 | 10 | 8.8 | 9.0 | 1–17 | 29 | |
C25 | 2 | 30.5 | — | 28–33 | 13 | |
5 | C01 | 22 | 13.2ac | 9.5 | 3–56 | 28 |
C10 | 3 | 54.0d | 56.0 | 41–65 | 9 | |
C25 | 0 | — | — | — | 3 | |
Study area | C01 | 137 | 2.2 | 2.0 | 1–10 | 293 |
C10 | 23 | 12.1 | 7.0 | 1–41 | 113 | |
C25 | 1 | 71.0 | — | — | 19 |