Fig. 4From: Multi-scale synthesis of historical fire regimes along the south-central US prairie–forest borderFrequency distributions of percentages of trees across south-central US oak woodlands during the period 1636 to 2015 C.E. Data are stratified by three time periods and compiled for all sites in all years. SP = State Park, AFP = Ancient Forest Preserve, NWR = National Wildlife Refuge, WMA = Wildlife Management AreaBack to article page