US Forest Service Research & Development
Contact Information
  • US Forest Service Research & Development
  • 1400 Independence Ave., SW
  • Washington, D.C. 20250-0003
  • 800-832-1355
You are here: Home / People / Profile


Priority Areas

  • Forest Disturbances

RMRS Program Areas

Research Entomologist

Jose Negron

Research Entomologist
240 West Prospect
Fort Collins
United States

Phone: 970-498-1252
Contact Jose Negron

Current Research

Jose’s current research includes reconstructing historical mountain pine beetle outbreaks in the Colorado Front Range. He is also developing field-based developmental models for mountain pine beetle and the Douglas-fir beetle. These will be used to develop predictive models and examining changes in population dynamics under climate change scenarios. Other studies include biological aspects of mountain pine beetle in Colorado, which has been very little studied, such as the role of parent adults in population biology, flight under different stand conditions, phloem consumption, and quantification of brood production from trees growing under different densities. His studies also address the ecology of endemic populations.

Research Interests

Future direction of Jose’s work is the biology, ecology, and management of western bark beetles under climate change, how past disturbances shape our forests, and how to incorporate research findings into forest management strategies.

Past Research

There is abundant literature on many aspects of the biology and ecology of the major bark beetles, such as mountain pine beetle and Douglas-fir beetle in the Intermountain West. Very little known about these insects in the Colorado Front Range. Past research has focused on the development of simple models to estimate the probability of infestation and extent of mortality caused by bark beetles. Target species include mountain pine beetle, Douglas-fir beetle, pinyon ips beetles, and the roundheaded pine beetle in Colorado, New Mexico, Arizona, and the Black Hills. Other work addressed little know aspects on the biology of the western balsam bark beetle, and the flight periodicity and sampling of populations of Douglas-fir beetle. Fire and insect interactions are also part of Jose’s research portfolio.

Why This Research is Important

Bark beetles are integral components of the ecology of western forests. Insect-caused mortality often comes in conflict with land manager objectives and impact other ecosystem services. Bark beetles, particularly the mountain pine beetle, have been the subject of research for decades. Still large gaps exist in our knowledge on how these insects operate and shape our forests and how to use the information in forest management. Climate change is challenging knowledge from the past as insects are responding to climate change by expanding distributions, exhibiting different overwintering ecology, and influencing developmental patterns to name a few. In order to better manage disturbances as climate change continues to manifest, our knowledge has to be updated to offer proper management responses.


  • University of Puerto Rico, B.S. Biology 1982
  • Louisiana State University, Baton Rouge, M.S. Entomology 1985
  • Louisiana State University, Baton Rouge, Ph.D. Entomology 1988

Professional Experience

  • Research Entomologist, USDA Forest Service, Rocky Mountain Research Station
    1993 - Current
  • Entomologist, USDA Forest Service, Forest Health Protection
    1988 - 1993
  • Professor in Entomology, University of Puerto Rico
    1990 - 1991
  • Graduate student and research assistant, Louisiana State University
    1983 - 1988

Featured Publications & Products


Research Highlights


Insects Associated with Fire-injured Ponderosa Pine

Forest Service scientists examined various aspects of the interaction between fire injury and subsequent insect infestations. Different types of ...


New forest health monitoring methods tested and found effective

Disturbance processes such as insect outbreaks are natural disturbance agents in forests. The frequency and intensity of disturbances is expect ...


Synthesis Paper on the Mountain Pine Beetle Biology and Management Now Available

A series of 10 papers prepared by experts on mountain pine present a synthesis of the state of the knowledge on selected aspects on the beetle b ...


Last updated on : 10/28/2021