"Sudden Aspen Decline" (SAD) of Aspen in Colorado, Utah, and Nevada
An aspen "die-off," which is now being described as "Sudden Aspen Decline" (SAD), beyond what was expected in the West's aging aspen forests, has been observed in a significant percentage of aspen communities across Southern Colorado, Utah and Nevada. Mortality has seemed to increase rapidly in the last several years. Aspen ecologists admit being puzzled and alarmed.
This page is dedicated to this significant issue and its overarching objective is the sharing of information between researchers studying the issues and resource managers.
Submit any information about this issue that you would like to see included on this page to firstname.lastname@example.org
New information about SAD issue.
- Sudden Aspen Decline (SAD) Summit Report. In February 2008, a meeting sponsored by the Rocky Mountain Research Station and Rocky Mountain and Intermountain Regions of the U.S. Forest Service was convened to share information on Sudden Aspen Decline (SAD) and discuss research and management activities to deal with the issue. The meeting was held at the on the Natural Resources Research Center campus in Fort Collins.
MANY MORE SAD REPORTS FALL 2007:
- Aspen "Die-off Summit" held in December 2006 The Rocky Mountain Research Station held a summit of 30 scientists and resource managers in Salt Lake City on December to probe the nature and causes of the region's aspen decline. 2
Participants from all professional disciplines were then assigned to
the following subject matter groups: Forest Ecology, Silviculture/Management, Genetics, Wildlife Ecology, Forest Health (pathologists, entomologists, etc.). Each group was asked to discuss the following topic outline and make recommendations to address the aspen mortality phenomenon:
a. Determine factors associated with aspen die-off
b. Determine research needs - factors and questions that need to be studied
c. Organize research needs into testable questions/hypotheses with budgets
Each subject matter group produced outline notes of their discussions. A draft of those notes can be reviewed. Also Presentation outlines from the summit can be reviewed.
Web sites about Sudden Aspen Decline (SAD).
FOREST HEALTH: Aspen Decline in Northern Arizona--Web page produced by US Forest Service, Southwest Region.
Climate Change Impacts on the Productivity and Heath of Aspen CIPHA is a research and monitoring initiative of the Canadian Forest Service, Natural Resources Canada. This project was started because since the 1980s, dieback and reduced growth of aspen has been noted, especially along the southern edge of the boreal forest and the aspen parkland.
Management Recommendations for Restoring Cedar Mountain Aspen--Seth Ohms, Graduate Research Assistant, Utah State University, Logan, Utah reports on Aspen clones southwestern Utah are deteriorating, some having experienced high mortality coupled with insufficient regeneration. (Presentation at Managing Aspen Conference in Cedar City, Utah in 2004