Harrington, Michael G. 1996. Fall rates of prescribed fire-killed ponderosa pine. Res. Pap. 

 INT-RP-489. Ogden, UT: U.S. Department of Agriculture, Forest Service, Intermountain 

 Research Station. 7 p. 



Fall rates of prescribed fire-killed ponderosa pine were evaluated relative to tree and fire 

 damage characteristics. High crown scorch and short survival time after fire injury were 

 factors leading to a high probability of early tree fall. The role of chemical defense 

 mechanisms is discussed. Results apply to prescribed-fire injured, second-growth pon- 

 derosa pine less than 16 inches diameter at breast height. 



Keywords: snags, crown scorch, tree fall, chemical defenses 



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