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Forest and Woodland Ecosystems Science Program
Contact Information
  • Forest and Woodland Ecosystems Science Program
  • Southwest Forest Science Complex
  • 2500 South Pine Knoll
  • Flagstaff, AZ 86001-6381
  • Alison Hill 928-556-2105
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Research Aspen Ecologist

Dale L Bartos

Research Ecologist
860 North 1200 East
Logan, UT 84321
Phone: 435-755-3567
Contact Dale L Bartos


Current Research

My current research includes efforts to determine the magnitude and causes of Sudden Aspen Decline (SAD) that is currently being observed in the Interior West. Among my other projects are studies designed to better understand the methods needed to restore aspen on the landscape to a level approaching its historic presence and how to minimize impacts that occur on the resulting aspen regeneration by ungulates (wildlife and livestock).

Research Interests

Study and understand the aspen (Populus tremuloides) ecosystems in the western U.S. How to restore aspen on the landscape after years of decline. Evaluate techniques to minimize animal (wildlife and livestock) impacts on aspen regeneration as a result of restoration efforts. Devise materials to aid in technology transfer to the Managers/Users. What are causes of Sudden Aspen Decline (SAD) that we are currently seeing in western areas.

Past Research

Initial evaluation of current data indicates a decline (from historical levels) in aspen in the western U.S. These declines vary from 40-95% for various states in the west. My research helps to determine methods to restore aspen on the landscape at a level approaching historical levels. Also, technical transfer methods are beneficial when discussing aspen problems with the users. In some areas, there is a major concern about restoring aspen before it becomes extinct. My research is essential for Land Managers to make logical and correct decisions with respect to aspen restoration.

Pre Forest Service

1) Bartos, Dale L. 1968. Root-rhizome production in a mixed priarie grassland in Western Kansas. Fort Hays, KS: Kansas State College. 25p. Thesis.

2) Bartos, Dale; Hughes, Joesph. 1969. Preliminary methodology and results for root biomass sampling on the Pawnee Site. U.S. IBP Grassland Biome Tech. Rep. No. 2. Fort Collins, CO: Colorado State University, Natural Ecology Laboratory. 20p.

3) Bartos, Dale Lee. 1971. Root dynamics of a shorgrass ecosystem.  Fort Collins, CO: Colorado State University. p. 129. Dissertation.

4) Sims, Phillip L.; Uresk, Daniel W.; Bartos, Dale L.; Lauenroth, William K.; Van Baker, Charles S. 1971. Herbage dynamics on the Pawnee Site: Aboveground and belowground herbage dynamics on the four grazing intensity treatments; and preliminary sampling on the ecosystem stress site.  U.S. IBP Grassland Biome Tech. Rep. No. 99. Fort Collins, CO: Colorado State University, Natural Ecology Laboratory. 95 p.

Why This Research is Important

I have worked on aspen for the past 40 years. Initial work involved understanding the functioning of the aspen ecosystems and how they respond to disturbance (e.g. burning and cutting). In the past 10-15 years there has been a tremendous concern about decline (loss) of aspen from some of our western landscapes. Using past research and years of experience it is possible to share this information with the Land Manager. Much time is spent in aiding the manager/user in understanding the aspen systems and how best to restore them under current conditions.

Education

  • Fort Hays State University, Hays, KS, BS General Science, 1966
  • Fort Hays State University, Hays, KS, MS Botany, 1968
  • Colorado State University, Fort Collins, Ph.D. Range Science, 1972

Professional Experience

  • Research Ecologist, Rocky Mountain Research Station, Forestry Sciences Lab., Logan, Utah
    2007 - Current
  • Project Leader and Research Ecologist, Rocky Mountain Research Station, Forestry Sciences Lab., Logan, Utah
    2001 - 2007
  • Acting Project Leader, Rocky Mountain Research Station, Forestry Sciences Lab., Logan, Utah
    2000 - 2001
  • Research Ecologist, Intermountain Research Station/Rocky Mountain Research Station, Forestry Sciences Lab., Logan, Utah
    1992 - 2000
  • Operations Research Analyst, Intermountain Forest and Range Experiment Station, Ogden Utah
    1984 - 1992
  • Range Scientist, Intermountain Forest and Range Experiment Station, Logan Utah
    1973 - 1984
  • Botanist, Intermountain Forest and Range Experiment Station, Logan Utah
    1972 - 1973
  • Research Assistant, Colorado State University, Fort Collins, Colorado
    1968 - 1971

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Last updated on : 06/04/2013