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Table 2 Change in tree strategy groups between older and newer tree surveys, adjusted for comparison (change = new percentage - old percentage; ratio = new percentage/old percentage)

From: Recent shifts in shade tolerance and disturbance traits in forests of the eastern United States

Region Group Old % New % Change Ratio
Central eastern Early-successional 25.9 25.9 0.1 1.0
  Mid-successional 38.0 41.4 3.4 1.1
  Late-successional 13.7 15.3 1.7 1.1
  Fire-tolerant oaks 18.8 14.3 − 4.5 0.8
  Fire-tolerant pines 3.2 2.3 − 0.9 0.7
  Planted pines 0.3 0.7 0.4 2.2
Northern Southeast Early-successional 21.9 26.3 4.4 1.2
  Mid-successional 14.5 16.0 1.6 1.1
  Late-successional 3.0 4.0 1.0 1.3
  Fire-tolerant oaks 10.9 7.5 − 3.4 0.7
  Fire-tolerant pines 22.9 8.4 − 14.6 0.4
  Planted pines 26.7 37.8 11.0 1.4
Coastal Plain Early-successional 25.2 23.0 − 2.2 0.9
  Mid-successional 17.3 16.8 − 0.5 1.0
  Late-successional 2.9 3.8 0.9 1.3
  Fire-tolerant oaks 4.0 2.1 − 1.9 0.5
  Fire-tolerant pines 12.4 5.4 − 7.0 0.4
  Planted pines 38.2 48.9 10.7 1.3