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Keyword: Dendroctonus ponderosae

Restoration planting options for limber pine (Pinus flexilis James) in the Southern Rocky Mountains

Publications Posted on: August 30, 2016
Limber pine Pinus flexilis James populations in the southern Rocky Mountains are threatened by the combined impacts of mountain pine beetles and white pine blister rust. To develop restoration planting methods, six P. flexilis seedling planting trial sites were installed along a geographic gradient from southern Wyoming to southern Colorado.

Elevational shifts in thermal suitability for mountain pine beetle in a changing climate

Science Spotlights Posted on: August 18, 2016
Future forests are being shaped by a changing climate. In addition to the direct effects on trees, climate change is influencing bark beetle disturbance events. Understanding the influence of future climate on bark beetle population growth and associated tree mortality is imperative for management of future forests.

A dynamical model for bark beetle outbreaks

Publications Posted on: August 17, 2016
Tree-killing bark beetles are major disturbance agents affecting coniferous forest ecosystems. The role of environmental conditions on driving beetle outbreaks is becoming increasingly important as global climatic change alters environmental factors, such as drought stress, that, in turn, govern tree resistance.

Integrating models to investigate critical phenological overlaps in complex ecological interactions: The mountain pine beetle-fungus symbiosis

Publications Posted on: July 15, 2016
The fates of individual species are often tied to synchronization of phenology, however, few methods have been developed for integrating phenological models involving linked species. In this paper, we focus on mountain pine beetle (MPB, Dendroctonus ponderosae) and its two obligate mutualistic fungi, Grosmannia clavigera and Ophiostoma montium.

Mountain pine beetle attack in ponderosa pine: Comparing methods for rating susceptibility

Publications Posted on: May 12, 2016
Two empirical methods for rating susceptibility of mountain pine beetle attack in ponderosa pine were evaluated. The methods were compared to stand data modeled to objectively rate each sampled stand for susceptibly to bark-beetle attack.

Solar treatments for reducing survival of mountain pine beetle in infested ponderosa and lodgepole pine logs

Publications Posted on: May 12, 2016
Three experiments were conducted to evaluate the use of solar radiation for reducing survival of mountain pine beetle populations in infested logs. Ponderosa pine logs were used in experiments 1 and 2 and lodgepole pine logs were used in experiment 3.

Identifying ponderosa pines infested with mountain pine beetles

Publications Posted on: May 12, 2016
Trees successfully and unsuccessfully attacked by mountain pine beetles have several symptoms in common, so that proper diagnosis is not always easy. Guidelines presented here enable the observer to correctly distinguish nearly all attacked trees.

Low-severity fire increases tree defense against bark beetle attacks

Publications Posted on: April 21, 2016
Induced defense is a common plant strategy in response to herbivory. Although abiotic damage, such as physical wounding, pruning, and heating, can induce plant defense, the effect of such damage by large-scale abiotic disturbances on induced defenses has not been explored and could have important consequences for plant survival facing future biotic disturbances.

Elevational shifts in thermal suitability for mountain pine beetle population growth in a changing climate

Publications Posted on: March 03, 2016
Future forests are being shaped by changing climate and disturbances. Climate change is causing large-scale forest declines globally, in addition to distributional shifts of many tree species. Because environmental cues dictate insect seasonality and population success, climate change is also influencing tree-killing bark beetles. The mountain pine beetle, Dendroctonus ponderosae, is a major disturbance in Pinus forests of the western US.

Long-term efficacy of diameter-limit cutting to reduce mountain pine beetle-caused tree mortality in a lodgepole pine forest

Publications Posted on: March 03, 2016
Mountain pine beetle, Dendroctonus ponderosae Hopkins, is the most significant mortality agent in pine forests of western North America. Silvicultural treatments that reduce the number of susceptible host trees, alter age and size class distributions, and diversify species composition are considered viable, long-term options for reducing stand susceptibility to mountain pine beetle-caused tree mortality.

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