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Keyword: Dendroctonus ponderosa

Are high elevation pines equally vulnerable to climate change-induced mountain pine beetle attack?

Publications Posted on: January 10, 2017
Mountain pine beetle (Dendroctonus ponderosae) (MPB), a native insect to western North America, caused extensive tree mortality in pine ecosystems during a recent warm and dry period. More than 24 million acres were affected, including in the relatively low elevation lodgepole (Pinus contorta) and ponderosa (P. ponderosa) pines, and the high-elevation whitebark (P. albicaulis) and limber (P. flexilis) pines.

Bark beetle-induced tree mortality alters stand energy budgets due to water budget changes

Publications Posted on: December 30, 2016
Insect outbreaks are major disturbances that affect a land area similar to that of forest fires across North America. The recent mountain pine bark beetle (Dendroctonus ponderosae) outbreak and its associated blue stain fungi (Grosmannia clavigera) are impacting water partitioning processes of forests in the Rocky Mountain region as the spatially heterogeneous disturbance spreads across the landscape.

Fortifying the forest: Thinning and burning increase resistance to a bark beetle outbreak and promote forest resilience

Publications Posted on: September 30, 2016
Fire frequency in low-elevation coniferous forests in western North America has greatly declined since the late 1800s. In many areas, this has increased tree density and the proportion of shade-tolerant species, reduced resource availability, and increased forest susceptibility to forest insect pests and high-severity wildfire.

Limber pine conservation strategy: Recommendations for Rocky Mountain National Park

Publications Posted on: August 30, 2016
Limber pine (Pinus flexilis), designated by Rocky Mountain National Park (RMNP) as a Species of Management Concern, is a keystone species that maintains ecosystem structure, function, and biodiversity in the park.

Mountain pine beetle seasonal timing and constraints to bivoltinism (A comment on Mitton and Ferrenberg, "Mountain Pine Beetle Develops an Unprecedented Summer Generation in Response to Climate Warming")

Publications Posted on: March 03, 2016
Mountain pine beetle tree colonization typically occurs in July and August, with completion of a generation one (univoltinism) or two (semivoltinism) years later. In a 2012 publication, Mitton and Ferrenberg suggested that climate change resulted in an unprecedented generation between June and September (a summer generation), with a concomitant shift to two generations in one year (bivoltinism).

Mountain pine beetles use volatile cues to locate host limber pine and avoid non-host Great Basin bristlecone pine

Publications Posted on: September 29, 2015
The tree-killing mountain pine beetle (Dendroctonus ponderosae Hopkins) is an important disturbance agent of western North American forests and recent outbreaks have affected tens of millions of hectares of trees. Most western North American pines (Pinus spp.) are hosts and are successfully attacked by mountain pine beetles whereas a handful of pine species are not suitable hosts and are rarely attacked.