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US Forest Service Research & Development
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  • US Forest Service Research & Development
  • 1400 Independence Ave., SW
  • Washington, D.C. 20250-0003
  • 800-832-1355
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Tracy Johnson

Tracy Johnson

Research Entomologist
PO Box 236
Volcano
Hawaii
United States
96785

Phone: 808-967-7122
Contact Tracy Johnson


Current Research

  • Impact of biological control of strawberry guava (Psidium cattleianum) in Hawaiian forests
  • Biocontrol of invasive melastomes (Miconia calvescens, Clidemia hirta, Tibouchina herbacea and related weeds)
  • Natural enemies of albizia (Falcataria moluccana)
  • Non-target interaction of lantana lace bug (Teleonemia scrupulosa) with a native Hawaiian plant

Research Interests

Biological control of weeds, Insect ecology, Post-release monitoring of biocontrol agents, Non-target impacts of biocontrol, Plant-herbivore-enemy interactions.

Why This Research is Important

Developing new tools to manage impacts of established invasive species is a priority of Forest Service research. Biological control can provide long-term, large-scale, highly selective suppression of otherwise intractable weeds. Our biocontrol program is recognized as a critical contribution to sustainable watershed management and native species conservation by federal, state and private partners in Hawaii. We prioritize ecosystem-degrading invasive plants that are top management targets in Hawaii and across the Pacific, including miconia, clidemia, strawberry guava, Himalayan ginger, and albizia.

Education

  • North Carolina State University, Ph.D. Entomology 1995
  • North Carolina State University, M.S. Entomology 1990
  • University of California, A.B. Biology 1984

Professional Organizations

  • Entomological Society of America, Member
  • Hawaiian Entomological Society, Member

Featured Publications & Products

Publications

Research Highlights

HighlightTitleYear


PSW-2012-07
Biocontrol of Strawberry Guava

First field release of biocontrol agent for managing invasive strawberry guava

2012


Last updated on : 07/01/2020