Fig. 7
From: Pre-Columbian red pine (Pinus resinosa Ait.) fire regimes of north-central Pennsylvania, USA
Time series plots for drought and fire regime metrics for the entire time period recorded by red pine (Pinus resinosa Ait.) tree rings for the time period 1370–2016 across the entire study area. A 11-year moving mean and annual values for Palmer Drought Severity Index (PDSI, Cook et al. 2004) for the closest grid point (no. 254) in south-central New York. B 11-year moving mean and annual values for the percentage of trees recording scarred per fire year. C Number of fires detected per decade (11-year moving sum)