Skip to main content

Table 1 Fire interval and fire scar seasonality statistics for Johns Mountain Wildlife Management Area, Georgia (JMT); Savage Gulf State Natural Area, Tennessee (SAV); and Angel Hollow, Kentucky (ANG), USA, sampled between 2017 and 2019 to reconstruct the characteristics of shortleaf pine historical fire regimes. Statistics are provided for the full period of record (All years) and sub-periods based on the timing of Euro-American settlement (EAS) and twentieth century fire exclusion. Fires = number of unique fire years, MFI = mean fire interval, SD = standard deviation of MFI, Range = range of fire interval length (years), WMI = Weibull median fire interval (years), LEI = lower exceedance interval (95%; years), UEI = upper exceedance interval (95%; years), Scarred = mean percentage of trees scarred during fire events (%), Scars = total number of fire scars, Identified = percentage of fire scars with determinable seasonality, n/a = not applicable

From: Revealing historical fire regimes of the Cumberland Plateau, USA, through remnant fire-scarred shortleaf pines (Pinus echinata Mill.)

  All years Pre-EAS EAS Fire exclusion
Site code: JMT SAV ANG JMT SAV ANG JMT SAV ANG JMT SAV ANG
Time period: 1673–1979 1659–2018 1740–2017 1673–1834 1659–1834 1740–1834 1834–1935 1834–1935 1834–1935 1935–1979 1935–2018 1935–2018
Fire regime characteristics
 Fires (n) 66 66 36 21 23 9 42 40 27 3 4 0
 MFI (yr) 3.4 3.7 4.1 5.3 4.4 5.0 2.3 2.5 3.8 6.0 13.7 n/a
 SD (yr) 3.8 4.8 2.2 6.0 4.9 2.9 1.3 1.6 1.9 n/a 16.0 n/a
 Range (yr) 1 to 26 1 to 32 1 to 11 1 to 26 1 to 21 2 to 11 1 to 6 1 to 8 1 to 8 3 to 9 3 to 32 n/a
 WMI (yr) 2.7 2.7 3.9 3.9 3.3 4.7 2.2 2.3 3.6 n/a 9.8 n/a
 LEI (yr) 0.7 0.6 1.7 0.8 0.7 2.1 0.9 0.9 1.7 n/a 2.0 n/a
 UEI (yr) 6.7 7.5 6.7 10.7 8.9 8.2 3.8 4.4 6.1 n/a 28.1 n/a
 Scarred (%) 13.5 11.6 16.5 16.1 10.0 18.2 13.2 10.6 16.0 27.9 28.2 0
Fire scar seasonality
 Scars (n) 130 144 98 40 41 12 82 92 86 8 12 0
 Identified (%) 54.2 56.8 60.2 62.5 61.0 50.0 50.0 53.3 61.6 60.0 75.0 n/a
  Dormant 90.1 72.2 79.7 100.0 92.0 33.3 82.9 71.4 84.9 100.0 22.2 n/a
  Early earlywood 1.4 1.2 11.9 0.0 0.0 50.0 2.4 2.0 7.5 0.0 0.0 n/a
  Middle earlywood 0.0 20.5 0.0 0.0 8.0 0.0 0.0 20.4 0.0 0.0 55.6 n/a
  Late earlywood 1.4 2.4 3.4 0.0 0.0 16.7 2.4 0.0 1.9 0.0 22.2 n/a
  Latewood 7.0 3.6 5.1 0.0 0.0 0.0 12.2 6.1 5.7 0.0 0.0 n/a