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Keyword: Pinus contorta

Biological aspects of mountain pine beetle in lodgepole pine stands of different densities in Colorado, USA

Publications Posted on: September 14, 2019
Research Highlights: The biology of mountain pine beetle (MPB), Dendroctonus ponderosae Hopkins, in Colorado’s lodgepole pine forests exhibits similarities and differences to other parts of its range. Brood emergence was not influenced by stand density nor related to tree diameter. The probability of individual tree attack is influenced by stocking and tree size.

Mountain pine beetle in colorado: A story of changing forests

Publications Posted on: December 06, 2018
The mountain pine beetle (MPB) (Dendroctonus ponderosae) is one of the most prevalent disturbance agents in western conifer forests. It utilizes various species of pines (Pinus spp.) as host trees. Eruptive populations can cause extensive tree mortality. Since the late 1990s, extensive outbreaks have occurred from the southern Rockies to British Columbia. In Colorado, lodgepole pine (P. contorta) forests have been the most affected.

Subwatershed-level lodgepole pine attributes associated with a mountain pine beetle outbreak

Publications Posted on: October 03, 2018
Mountain pine beetle (Dendroctonus ponderosae Hopkins; MPB) is an aggressive bark beetle that attacks numerous Pinus spp. and causes extensive mortality in lodgepole pine (Pinus contorta Douglas ex Loudon; LPP) forests in the western United States and Canada.

Modelling the management of forest ecosystems: Importance of wood decomposition

Publications Posted on: May 10, 2018
Scarce and uncertain data on woody debris decomposition rates are available for calibrating forest ecosystem models, owing to the difficulty of their empirical estimations.

Probability of infestation and extent of mortality models for mountain pine beetle in lodgepole pine forests in Colorado

Publications Posted on: December 05, 2017
The mountain pine beetle, Dendroctonus ponderosae Hopkins, is a significant agent of tree mortality in lodgepole pine (Pinus contorta Dougl. ex Loud.) forests throughout western North America. A large outbreak of mountain pine beetle caused extensive tree mortality in north-central Colorado beginning in the late 1990s.

Mountain pine beetle dynamics and reproductive success in post-fire lodgepole and ponderosa pine forests in northeastern Utah

Publications Posted on: January 30, 2017
Fire injury can increase tree susceptibility to some bark beetles (Curculionidae, Scolytinae), but whether wildfires can trigger outbreaks of species such as mountain pine beetle (Dendroctonus ponderosae Hopkins) is not well understood. We monitored 1173 lodgepole (Pinus contorta var. latifolia Doug.) and 599 ponderosa (Pinus ponderosa Doug.

Severity of a mountain pine beetle outbreak across a range of stand conditions in Fraser Experimental Forest, Colorado, United States

Publications Posted on: January 24, 2017
The recent mountain pine beetle (Dendroctonus ponderosae Hopkins) outbreaks had unprecedented effects on lodgepole pine (Pinus contorta var. latifolia) in western North America. We used data from 165 forest inventory plots to analyze stand conditions that regulate lodgepole pine mortality across a wide range of stand structure and species composition at the Fraser Experimental Forest in Colorado, USA.

Mountain pine beetle host selection between lodgepole and ponderosa pines in the southern Rocky Mountains

Publications Posted on: October 04, 2016
Recent evidence of range expansion and host transition by mountain pine beetle (Dendroctonus ponderosae Hopkins; MPB) has suggested that MPB may not primarily breed in their natal host, but will switch hosts to an alternate tree species. As MPB populations expanded in lodgepole pine forests in the southern Rocky Mountains, we investigated the potential for movement into adjacent ponderosa pine forests.

Potential fire behavior depends on cutting pattern in a Montana lodgepole pine forest

Science Spotlights Posted on: September 12, 2016
Many lodgepole pine forests in Montana were historically a mix of ages and tree sizes as a result of mixed-severity fires. Now the forests have trees mostly the same size and crowns touch so that when fires burn, they burn as large and severe crown fires. This study looked twelve years after two patterns of thinning and burning, to see if the cutting patterns and regrowth could influence fire behavior. 

Tree response and mountain pine beetle attack preference, reproduction, and emergence timing in mixed whitebark and lodgepole pines

Publications Posted on: March 03, 2016
Mountain pine beetle (Dendroctonus ponderosae) is an important disturbance agent in Pinus ecosystems of western North America, historically causing significant tree mortality. Most recorded outbreaks have occurred in mid elevation lodgepole pine (Pinus contorta). In warm years, tree mortality also occurs at higher elevations in mixed species stands.

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