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Fire Ecology
Fig. 6 | Fire Ecology

Fig. 6

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

Fig. 6

Time series plots of fires per decade (FPD) showing repeated waveforms for study sites on the Cumberland Plateau and adjacent ecoregions to the south (southern Appalachians), west (Eastern Highland Rim), and north (Ohio River Valley), USA. Sampling occurred between 2017 and 2019 to reconstruct the characteristics of shortleaf pine (Pinus echinata) historical fire regimes. For all plots, black lines represent shortleaf pine fire-scar records while gray lines are montane longleaf pine (in the southern Appalachians) and post oak (all other ecoregions). In all panels, a reference for biennial burning level (fire interval of 2 years) is shown by the horizontal dotted line

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