Full Citation: Hood, Sharon M.; Sala, Anna; Heyerdahl, Emily K.; Boutin, Marion. 2015. Low-severity fire increases tree defense against bark beetle attacks. Ecology 96(7):1846-1855.
External Identifier(s): 10.1890/14-0487.1 Digital Object Identifier
Location: Idaho, Montana, Utah and Oregon, U.S.
Ecosystem types: Ponderosa pine forest
Southwest FireCLIME Keywords: None
FRAMES Keywords: low intensity burns, wildfires, dendrochronology, disturbance, herbivory, insects, plant diseases, resins, Dendroctonus ponderosae, MPB - mountain pine beetle, Ips spp., Pinus ponderosa, ponderosa pine, Idaho, Montana, Oregon, Utah, fire management, forest management, bark beetles, dendrochronology, plant defense, resin duct production, tree rings, wildfire

Low-severity fire increases tree defense against bark beetle attacks

Sharon M. Hood, Anna Sala, Emily K. Heyerdahl, Marion Boutin


Summary - what did the authors do and why?

The authors tested the theory that frequent, low severity wildfire confers a heightened defense response to ponderosa pine against future bark beetle attack.


Publication findings:

The authors found that frequent, low-severity fire events correlate with increased resin duct defenses in ponderosa pine, which increases protection against bark beetle infestation provided the trees suffer only minor injury. This resin production decreases during long fire-free periods.

Fire and Ecosystem Effects Linkages

The authors found that frequent, low-severity fire events correlate with increased resin duct defenses in ponderosa pine, which increases protection against bark beetle infestation provided the trees suffer only minor injury. This resin production decreases during long fire-free periods.

The authors found that frequent, low-severity fire events correlate with increased resin duct defenses in ponderosa pine, which increases protection against bark beetle infestation provided the trees suffer only minor injury. This resin production decreases during long fire-free periods.