Expertise and interests

• Research and teaching focus on biological systems with an emphasis on the role of snow in the distribution of vegetation in tundra ecosystems, plant community ecology, ecosystem ecology, plant evolution, field teaching, and arctic and alpine ecosystems.

Education

• M.A.-1999 EPO Biology, University of Colorado, Boulder, Colorado
• B.S.-1993 Botany, Colorado State University, Fort Collins, Colorado

Journal articles

• W. D. BOWMAN and LEE TURNER. 1993. Photosynthetic sensitivity to temperature in populations of two C4 Bouteloua (Poaceae) species native to different altitudes. American Journal of Botany. 80(4): 369-374.
• M. D. WALKER, D. A. WALKER, J. WELKER, A. ARFT, T. BARDSLEY, P. D. BROOKS, J. FAHNESTOCK, M. H. JONES, M. LOSLEBEN, A. PARSONS, T. R. SEASTEDT, P. L. TURNER. 1998. Long-term experimental manipulations of winter snow regime and summer temperature in arctic and alpine tundra: an integrated ecosystem approach. Journal of Hydrology. In press.
• A. M. ARFT, M. D. WALKER, J. GUREVITCH, J. M. ALATALO, M. S. BRET-HARTE, M. DALE, M. DIEMER, F. GUGERLI, G. H. R. HENRY, M. H. JONES, R. D. HOLLISTER, I. S. JONSDOTTIR, K. LAINE, E. LEVESQUE, G. M. MARION, U. MOLAU, P. MOLGAARD, U. NORDENHALL, V. RASZHIVIN, C. H. ROBINSON, G. STARR, A. STENSTROM, M. STENSTROM, O. TOTLAND, P. L. TURNER, L. J. WALKER, P. J. WEBBER, J. M. WELKER, P. A. WOOKEY. 1998. Response patterns of tundra plant species to experimental warming: a meta-analysis of the International Tundra Experiment. 1998. Ecology. In press.

Posters

• P. L. TURNER, P. BROOKS, T. SEASTEDT, D. A. WALKER, M.D. WALKER, J. WELKER. 1996. Alpine tundra responses to experimental manipulations of summer temperature and winter snow cover, Niwot Ridge, Colorado. Presented at the International Tundra Experiment annual meeting, Copenhagen, Denmark.
• D. A. WALKER., A. M. ARFT, T. BARDSLEY, P. D. BROOKS, M. JONES, M. LOSLEBEN, A. PARSONS, T. R. SEASTEDT, P. L. TURNER, M. D. WALKER, J. WELKER. 1997. Long-term snow-fence experiment to examine effects of altered climate in arctic and alpine tundra. Presented at the Snow Hydrology Conference, Banff, Alberta.

Professional activities

• Manuscript reviewer
  Arctic and Alpine Research 1996-present

Conference participation

• Niwot Ridge LTER and International Tundra Experiment (ITEX) site representative: International Tundra Experiment Annual meeting. Copenhagen, Denmark , April 1996.
• Niwot Ridge Long-Term Ecological Research (LTER) site representative at National Center for Ecological Analysis and Synthesis (NCEAS) for conference: Exploring the Relationship between Species Richness and Biomass. Santa Barbara, September 1996.
• Niwot Ridge LTER and International Tundra Experiment (ITEX) site representative at NCEAS for conference: Response Patterns of Tundra Plant Species to Experimental Warming: A Meta-Analysis of the International Tundra Experiment. Santa Barbara, February 1997.

Positions

• Graduate Research Assistant, INSTAAR 1995-1997
  Duties included supervision of 6-10 undergraduate hourly workers in the laboratory, supervision of undergraduate workers at Niwot Ridge field site, design research chores for summer workers at Niwot Ridge field site, statistical analyses of various data sets collected and, participation in conferences concerning research at Niwot Ridge.
• Graduate Teaching Assistant, University of Colorado 1997-1999
  
• Assistant Instructor, Institute for Advanced Field Education 1998-1999 Duties include assisting in the teaching, design, and logistics of field classes taught in remote areas of the Canadian Arctic. Future duties will include planning field classes to Baja, Mexico.
  
  

Courses taught or assisted

University of Colorado-Boulder:

• GEOG 4900: Teaching Geography 1990
  Undergraduate teaching assistant and tutor.
• EPOB 1240: General Biology Lab 1997
  Graduate teaching assistant in labs.
• EPOB 3500: Plant Kingdom, Spring 1998
  Graduate teaching assistant in labs and occasional lecturer.
• EPOB 3500: Plant Kingdom, Fall 1998
  Graduate teaching assistant in labs and occasional lecturer.
• EPOB 3170: Arctic and Alpine Ecology 1998
  Occasional lecturer.
• EPOB 3520: Plant Systematics 1999
  Graduate teaching assistant in labs and occasional lecturer.

University of Minnesota:

• EEB 4852-5852: Arctic Field Ecology 1998
  Assisted in teaching, design, and logistics of field course that takes place in the remote Canadian Arctic.
  
• EEB 4852-5852: Arctic Field Ecology 1999
  Same as above
  

Graduate advisors

• Dr. Marilyn Walker
  EPO Biology Department/INSTAAR
  Campus Box 450
  University of Colorado
  Boulder, Colorado, 80309-0450
  email: mwalker@taimyr.colorado.edu 303-492-5276
  
• Dr. William Bowman
  EPO Biology Department
  Campus Box 334
  University of Colorado
  Boulder, Colorado, 80309-0334
  email: William.Bowman@Colorado.EDU 303-492-2557
  

Additional reference

• Dr. William Gould, Director
  Institute for Advanced Field Education
  Campus Box 450
  University of Colorado
  Boulder, Colorado, 80309-0450
  Email: ffwag@uaf.edu
  Phone: 303-492-8250