US Forest Service Research & Development
Contact Information
  • US Forest Service Research & Development
  • 1400 Independence Ave., SW
  • Washington, D.C. 20250-0003
  • 800-832-1355
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Mac Callaham

Team Leader/Research Ecologist
320 Green Street
United States

Phone: 706-559-4321
Contact Mac Callaham

Current Research

I am interested in soil ecosystem responses to natural disturbances (fire, wind, and flood), forest management practices which seek to simulate disturbances (prescribed fire, thinning, harvesting), and anthropogenic disturbances (e.g. invasive species).  I am particularly interested in responses of soil biota (e.g. earthworms, herbivorous insects, soil microbes, etc.) to these disturbances and land management practices, and how changes in invertebrate assemblages may lead to changes in other components of forest systems (e.g. nutrient relationships, plant-herbivore relationships).  In addition to pure soil biology, I am also interested in elemental dynamics, and specifically the effects of prescribed fire on soil organic matter and toxics (soil carbon, nitrogen, and mercury).


  • Kansas State University, Ph.D. Biology
  • University of Georgia, M.S. Agronomy
  • University of Georgia, B.S. Zoology
  • University of Georgia, B.A. English

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Research Highlights


Short-circuiting an Invasional Meltdown

Chinese privet is an invasive plant species in flood plain forests of the southeastern U.S., in some cases occupying up to 80 percent of availab ...


Last updated on : 10/07/2016