scholarly journals Ponderosa pine resin defenses and growth: metrics matter

2015 ◽  
pp. tpv098 ◽  
Author(s):  
Sharon Hood ◽  
Anna Sala
Keyword(s):  
Ponderosa Pine ◽  
Pine Resin ◽  
Growth Metrics ◽  
Resin Defenses

Seasonal fire effects on mixed-conifer forest structure and ponderosa pine resin properties

2006 ◽  
Vol 36 (1) ◽  
pp. 238-254 ◽  
Author(s):  
Daniel DB Perrakis ◽  
James K Agee
Keyword(s):  
Pinus Ponderosa ◽  
Forest Structure ◽  
Ponderosa Pine ◽  
Bark Beetles ◽  
Conifer Forest ◽  
Mixed Conifer ◽  
Pine Resin ◽  
Ponderosa Pine Forests ◽  
Fuel Loads ◽  
Resin Defenses

This study examined the effects of spring and fall restoration burning in an old-growth mixed-conifer – ponderosa pine (Pinus ponderosa Dougl. ex P. & C. Laws.) forest in southern Oregon. Variables measured include fuel loads, forest structure indices, mortality of large ponderosa pines, and pine resin defenses. One year after treatment, reductions in surface fuel loads and changes to forest structure parameters suggested that burning treatments could meet restoration objectives, with fall burns being somewhat more effective than spring burns. However, mortality of pre settlement pines was significantly higher in fall burns than in spring burns, and both were higher than in unburned controls. Bark beetles (Coleoptera: Scolytidae) were important mortality agents within 2 years after burning. Resin defenses (pressure and flow) were variable over the 2 years of postburn study but showed no evidence of decrease in burned trees; rather, resin defenses were significantly higher in burned trees than in controls at several measurement dates. While increased beetle attacks have previously been documented following burning, there has been much less research on resin responses to fire. These findings suggest that current models of beetle–host interactions do not properly explain the effects of prescribed fire in ponderosa pine forests.

scholarly journals The Survival of Pinus ponderosa Saplings Subjected to Increasing Levels of Fire Behavior and Impacts on Post-Fire Growth

Fire ◽  
2019 ◽  
Vol 2 (2) ◽  
pp. 23 ◽  
Author(s):  
Wade D. Steady ◽  
Raquel Partelli Feltrin ◽  
Daniel M. Johnson ◽  
Aaron M. Sparks ◽  
Crystal A. Kolden ◽  
...  
Keyword(s):  
Dose Response ◽  
Pinus Ponderosa ◽  
Ponderosa Pine ◽  
Fire Hazard ◽  
Fire Behavior ◽  
Forest Growth ◽  
Growth And Yield ◽  
Radiative Energy ◽  
Fire Growth ◽  
Growth Metrics

Improved predictions of tree species mortality and growth metrics following fires are important to assess fire impacts on forest succession, and ultimately forest growth and yield. Recent studies have shown that North American conifers exhibit a ‘toxicological dose-response’ relationship between fire behavior and the resultant mortality or recovery of the trees. Prior studies have not been conclusive due to potential pseudo-replication in the experimental design and time-limited observations. We explored whether dose-response relationships are observed in ponderosa pine (Pinus ponderosa) saplings exposed to surface fires of increasing fire behavior (as quantified by Fire Radiative Energy—FRE). We confirmed equivalent dose-response relationships to the prior studies that were focused on other conifer species. The post-fire growth in the saplings that survived the fires decreased with increasing FRE dosages, while the percentage mortality in the sapling dosage groups increased with the amount of FRE applied. Furthermore, as with lodgepole pine (Pinus contorta), a low FRE dosage could be applied that did not yield mortality in any of the replicates (r = 10). These results suggest that land management agencies could use planned burns to reduce fire hazard while still maintaining a crop of young saplings. Incorporation of these results into earth-system models and growth and yield models could help reduce uncertainties associated with the impacts of fire on timber growth, forest resilience, carbon dynamics, and ecosystem economics.

Influence of Ponderosa Pine Resin Volatiles on the Response of Dendroctonus ponderosae1 to Synthetic trans -Verbenol 2 , 3

1976 ◽  
Vol 5 (1) ◽  
pp. 171-179 ◽  
Author(s):  
Ronald F. Billings ◽  
Robert I. Gara ◽  
Bjorn F. Hrutfiord
Keyword(s):  
Ponderosa Pine ◽  
Pine Resin

Composition of loblolly pine resin defenses: comparison of monoterpenes from induced lesion and sapwood resin

1987 ◽  
Vol 17 (10) ◽  
pp. 1202-1206 ◽  
Author(s):  
T. D. Paine ◽  
C. A. Blanche ◽  
T. E. Nebeker ◽  
F.M. Stephen
Keyword(s):  
Loblolly Pine ◽  
Energy Requirements ◽  
Tissue Formation ◽  
Pine Resin ◽  
Percent Composition ◽  
Loblolly Pines ◽  
Blue Stain ◽  
Resin Defenses ◽  
Monoterpene Composition

Even-aged loblolly pines in three crown classes chosen to represent varying levels of vigor were inoculated with the blue-stain fungus Ceratocystisminor to induce hypersensitive tissue formation. There were no differences in monoterpene composition of the induced tissue among crown classes growing on the same site. However, there were significant differences in percent composition of individual monoterpenes between trees growing on a poorer wet site and those growing on a better dry site. There were also quantitative and qualitative differences in monoterpene composition of preformed xylem resin compared with the monoterpenes extracted from the hypersensitive tissue. The differences in composition between the preformed resin and resin found in the hypersensitive tissue may reflect, in part, the energy requirements for initiation of the inducible system.

Lick Creek historic photographic series: a century of change in a ponderosa pine forest in western Montana, US

2018 ◽  
Author(s):  
Sharon M. Hood ◽  
Duncan C. Lutes ◽  
Justin S. Crotteau ◽  
Christopher R. Keyes ◽  
Anna Sala ◽  
...  
Keyword(s):  
Ponderosa Pine ◽  
Pine Forest ◽  
Western Montana ◽  
Ponderosa Pine Forest

Vegetation and soil effects from prescribed, wild, and combined fire events along a ponderosa pine and grassland mosaic

2007 ◽  
Author(s):  
Theresa Jain ◽  
Molly Juillerat ◽  
Jonathan Sandquist ◽  
Mike Ford ◽  
Brad Sauer ◽  
...  
Keyword(s):  
Ponderosa Pine ◽  
Soil Effects
Sign in / Sign up

Export Citation Format

Share Document