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Keyword: Engelmann Spruce

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".

Socioecological impacts of multiple forest insect outbreaks in the Pinaleño spruce-fir forest, Arizona

Publications Posted on: August 16, 2020
Multiple high-severity insect outbreaks and wildfires dramatically altered the character of the Pinaleño high-elevation forests with notable impacts on ecosystem services. The Pinaleños are a small mountain range positioned close to large population centers, but not so close that any large industry is dependent on their resources, so regional and local impacts of the insect outbreaks to provisional resources were minor.

Engelmann spruce seed production: Long-term study on the Fraser Experimental Forest

Projects Posted on: August 26, 2019
In 1968, thirteen permanent research plots were established in Engelmann spruce-subalpine fir forests along an elevational gradient on the Fraser Experimental Forest. Seed traps were installed on these plots and have been sampled annually since 1968.  

Engelmann spruce seed production is influenced by climate

Science Spotlights Posted on: August 26, 2019
In 1968, thirteen permanent research plots were established in Engelmann spruce-subalpine fir forests along an elevational gradient on the Fraser Experimental Forest. Seed traps were installed on these plots and have been sampled annually since 1968. In 2011, tree cores were sampled to examine the relationship between climate and seed production.

A test of lethal trap trees for control of spruce beetles

Publications Posted on: July 22, 2019
The spruce beetle, Dendroctonus rufipennis, can cause extensive mortality of Engelmann spruce, Picea engelmannii, during outbreaks. Endemic populations breed in the underside of downed spruces. Outbreaks often develop after blowdowns that create abundant downed trees where beetle populations can increase. Occasionally, managers practice suppression to protect high-value resources.

Spruce beetle outbreaks guide American Three-toed Woodpecker Picoides dorsalis occupancy patterns in subalpine forests

Publications Posted on: October 04, 2018
American Three-toed Woodpeckers Picoides dorsalis are considered a sensitive species by the United States Bureau of Land Management and are on the United States Fish and Wildlife Service’s Watch List. In Idaho, Oregon and Washington, they are of conservation concern due to low abundance and an apparent reliance on disturbed, old-growth forests.

Severity of overstory mortality influences conifer recruitment and growth in mountain pine beetle-affected forests

Publications Posted on: October 04, 2018
The severity of lodgepole pine mortality from mountain pine beetle outbreaks varies with host tree diameter, density, and other structural characteristics, influencing subcanopy conditions and tree regeneration.

Historic range of variability for upland vegetation in the Medicine Bow National Forest, Wyoming

Publications Posted on: August 01, 2018
An approach for synthesizing the results of ecological research pertinent to land management is the analysis of the historic range of variability (HRV) for key ecosystem variables that are affected by management activities. This report provides an HRV analysis for the upland vegetation of the Medicine Bow National Forest in southeastern Wyoming.

Historic range of variability for upland vegetation in the Bighorn National Forest, Wyoming

Publications Posted on: August 01, 2018
An approach for synthesizing the results of ecological research pertinent to land management is the analysis of the historic range of variability (HRV) for key ecosystem variables that are affected by management activities. This report provides an HRV analysis for the upland vegetation of the Bighorn National Forest in northcentral Wyoming.

3-Methylcyclohex-2-en-1-one for area and individual tree protection against spruce beetle (Coleoptera: Curculionidae: Scolytinae) attack in the southern Rocky Mountains

Publications Posted on: September 25, 2017
We tested 3-methylcyclohex-2-en-1-one (MCH) and an Acer kairomone blend (AKB) as repellent semiochemicals for area and single tree protection to prevent spruce beetle (Dendroctonus rufipennis Kirby) attacks at locations in Utah and New Mexico.

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