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Keyword: mountain pine beetle

Scientific response to intensifying bark beetle outbreaks in Europe and North America

Publications Posted on: October 01, 2021
Tree-killing bark beetles are globally the most destructive forest pests and their impacts have increased in recent decades. Such an increase has been consistently reported from Europe and North America, and it is, with high confidence, driven by climate change. We investigated how the scientific community in both continents responded to this situation by conducting a comprehensive search of the Scopus database from 1970 to 2020.

Impacts of thinning treatments on dynamics of needle disease caused by Elytroderma deformans (Weir) Darker and interactions with bark beetle-attacks in the northern Rocky Mountains

Publications Posted on: September 27, 2021
The fungus Elytroderma deformans causes a serious needle disease of pines in western North America and is considered the most important needle disease of ponderosa pine in Montana. While important, there has been limited evaluation of pre-commercial thinning or other treatments on disease incidence.

Invasive Species Science Update (No. 13)

Publications Posted on: May 04, 2021
This issue highlights RMRS research spanning topics including using environmental DNA in fish eradication efforts, how bark beetle outbreaks affect weeds, long-term weed dynamics after forest restoration, the Fire Effects Information System’s invasive plant species database, uncovering the importance of seed-eating small mammals on plant communities and invasions, and others.

Alpine treeline ecotones are potential refugia for a montane pine species threatened by bark beetle outbreaks

Publications Posted on: April 02, 2021
Warming‐induced mountain pine beetle (Dendroctonus ponderosae; MPB) outbreaks have caused extensive mortality of whitebark pine (Pinus albicaulis; WBP) throughout the species’ range. In the highest mountains where WBP occur, they cross alpine treeline ecotones (ATEs) where growth forms transition from trees to shrub‐like krummholz, some of which survived recent MPB outbreaks.

Translocation experiment reveals capacity for mountain pine beetle persistence under climate warming

Publications Posted on: March 17, 2021
Predicting species response to climate change is a central challenge in ecology, particularly for species that inhabit large geographic areas. The mountain pine beetle (MPB) is a significant tree mortality agent in western North America with a distribution limited by climate. Recent warming has caused large-scale MPB population outbreaks within its historical distribution, in addition to migration northward in western Canada.

Conifer snagfall data in bark-beetle infested subalpine forests at the Fraser Experimental Forest, Colorado, USA

Datasets Posted on: December 30, 2020
This data publication contains data directly associated with Rhoades et al. (IN PRESS), "Snagfall the first decade after severe bark beetle infestation of high-elevation forests in Colorado, USA".

Tree-ring growth and stable-carbon isotope response data to forest restoration treatments in ponderosa pine forests of the Lick Creek Demonstration-Research Forest, Bitterroot National Forest, Montana, USA

Datasets Posted on: December 30, 2020
This data publication includes the data used in "Forest restoration treatments in a ponderosa pine forest enhance physiological activity and growth under climatic stress" by Tepley et al. (2020).

Whitebark pine (Pinus albicaulis) growth and defense in response to mountain pine beetle outbreaks

Publications Posted on: October 01, 2020
Whitebark pine (WBP; Pinus albicaulis) is a critical keystone forest species of U.S. Northern Rocky Mountain subalpine ecosystems (Tomback et al. 2001).

The 'Goldilocks Principle' applies to mountain pine beetle and climate change

Science Spotlights Posted on: September 02, 2020
A generation time of 1 year is the most successful strategy for mountain pine beetle, a notable tree killer in the western U.S. However, generations time is dictated by temperature, which is changing globally. Because locally evolved adaptations in mountain pine beetle have resulted in strict physiological requirements for temperature regimes at specific times of the year, population persistence will be dependent on temperature changes that are not too hot, but just right.

Rocky Mountain bristlecone pine is a confirmed host for mountain pine beetle

Science Spotlights Posted on: September 02, 2020
The mountain pine beetle is the most notable killer of pines in western North America. Bristlecone pines grow at high elevations and are among the longest-lived conifers globally.  Although the bristlecone species Great Basin bristlecone and foxtail pine appear to be less preferred by mountain pine beetle and may not be suitable for mountain pine beetle offspring success, their close relative Rocky Mountain bristlecone is now a confirmed and suitable host.