Control
Late (thin), underburned
Control (2)
Late (thin), lo-wood (2)
Douglas-fir, lo-wood & hi-wood (2)
Late (thin), hi-wood
Pioneer, hi-wood
Pioneer, lo-wood,
Pioneer,
lo-wood & hi-wood (2)
Backburn in other stands
Wildfire in young stands
Wildfire in mature stands
0%
20%
40%
60%
80%
100%
100% mortality
64% survival
36% mortality
100% mortality
100% mortality
100% mortality
100% mortality
70% mortality
92% mortality
88% survival
Fire-induced
tree
mortality across
LTEP stands
Douglas-fir mortality
(orange) and survival (green) percentages for
13 stands, corrected for ongoing background mortality
(self thinning) as observed in unburned stands.
Error bars are 95% confidence intervals for duplicate
Control and
Late, lo-wood stands.
Douglas-fir saplings in young
5-yr-old
stands (both Pioneer and Douglas-fir treatments) were all killed either by the wildfire or the backburn set to fight the fire.
The Late-succession, thinned and underburned stand had the lowest Douglas-fir mortality (36%) of all the wildfire-burned stands.
The two Control stands had significantly lower mortality (70%) than the two thinned, Late-succession, lo-wood stands (92%); and lower than the one thinned, Late-succession, hi-wood stand (100%).
Initial results:
A2 evidence