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 |
| Â | Mid-successional | 38.0 | 41.4 | 3.4 | 1.1 |
| Â | 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 |
| Â | Planted pines | 0.3 | 0.7 | 0.4 | 2.2 |
Northern Southeast | Early-successional | 21.9 | 26.3 | 4.4 | 1.2 |
| Â | Mid-successional | 14.5 | 16.0 | 1.6 | 1.1 |
| Â | 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 |
| Â | 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 |
| Â | 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 |
| Â | Planted pines | 38.2 | 48.9 | 10.7 | 1.3 |