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Keyword: Quaking aspen

Pathogenicity and distribution of two species of Cytospora on Populus tremuloides in portions of the Rocky Mountains and midwest in the United States

Publications Posted on: October 01, 2020
Historically, Cytospora canker of quaking aspen was thought to be caused primarily by Cytospora chrysosperma. However, a new and widely distributed Cytospora species on quaking aspen was recently described (Cytospora notastroma Kepley & F.B. Reeves).

Sustaining aspen in western landscapes: Symposium proceedings; 13-15 June 2000; Grand Junction, CO

Publications Posted on: June 22, 2020
The current status and trend of aspen is a topic of debate; some studies have claimed dramatic reductions in aspen stands while others have found no major changes. The actual picture of aspen forests across the West is variable, and the presence of conifers and ungulates in aspen may or may not indicate a progressive loss of aspen.

Test-driving a roadmap for quaking aspen restoration

Science Spotlights Posted on: July 24, 2019
Quaking aspen is the most widely distributed tree species in North America. Healthy aspen forests are highly productive and support greater biodiversity than any other upland forest type in the Intermountain West. Overall, quaking aspen has been in decline throughout much of the Region and is in need of restorative intervention.

Managing habitats for white-tailed deer in the Black Hills and Bear Lodge Mountains of South Dakota and Wyoming

Publications Posted on: February 26, 2019
The white-tailed deer is one of the most studied animals in North America, yet much of the available information has been derived in ecosystems different from the Black Hills. The Black Hills are unique in that the dominant species, ponderosa pine, has excellent regenerative abilities.

Dynamics of coarse woody debris in southwestern mixed-conifer and ponderosa pine forests

Projects Posted on: October 09, 2015
Snags (standing dead trees) and logs are important components of forest landscapes. RMRS scientists established a series of fixed plots in 1997 for monitoring snag populations. This research has direct ramifications for 11 national forests throughout the Southwestern Region, as well as for our overall understanding of the ecology of coarse woody debris and effects of climate change on forest structure and composition.

Slow lifelong growth predisposes Populus tremuloides to tree mortality

Publications Posted on: October 07, 2014
Widespread dieback of aspen forests, sometimes called sudden aspen decline, has been observed throughout much of western North America, with the highest mortality rates in the southwestern United States.

Populus tremuloides mortality near the southwestern edge of its range

Publications Posted on: September 19, 2013
Mortality and crown dieback of quaking aspen (Populus tremuloides) were extensive on the Williams Ranger District, Kaibab National Forest in northern Arizona. We collected data from a random sample of 48 aspen sites to determine the relationship of predisposing site and stand factors and contributing agents to ramet mortality. Mortality of overstory (P10.1 cm DBH) aspen stems averaged 50% (44% by basal area).

Transcriptome characterization and detection of gene expression differences in aspen (Populus tremuloides)

Publications Posted on: September 06, 2013
Aspen (Populus tremuloides) is a temperate North American tree species with a geographical distribution more extensive than any other tree species on the continent. Because it is economically important for pulp and paper industries and ecologically important for its role as a foundation species in forest ecosystems, the decline of aspen in large portions of its range is of serious concern.

Habitone analysis of quaking aspen in the Utah Book Cliffs: Effects of site water demand and conifer cover

Publications Posted on: May 02, 2013
Quaking aspen (Populus tremuloides Michx.) is the most widely distributed tree species in North America, but its presence is declining across much of the Western United States.

Evaluation of techniques to protect aspen suckers from ungulate browsing in the Black Hills

Publications Posted on: April 04, 2012
Excessive browsing by cattle (Bos taurus L.) and wild ungulates, particularly elk (Cervus elaphus L.), sometimes inhibits growth and maturity of quaking aspen (Populus tremuloides Michx.) suckers in Western North America. In areas where aspen stands are in poor condition or declining, protecting suckers from ungulates may be necessary.