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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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Dr. John Brown

John Brown

Research Forester
301 Hardwood Lane, Suite B
Princeton
West Virginia
United States
24740

Phone: 304-431-2731
Contact John Brown


Current Research

  • Modeling hardwood species tree survival for a range of forest management practices and disturbance regimes.
  • Modeling the effects of silvicultural systems on tree grade.
  • Determining and interpreting red spruce site index to support high-elevation red spruce restoration in the central Appalachians.
  • Research Interests

    Forest Biometrics, Silviculture, Forest Disturbance.

    Why This Research is Important

    Tree survival is a common inventory measure that is collected for multiple long term data sets related to forest management strategies and disturbance.  Analysis however has been limited in the past to logistic regression modeling or other more basic measures of mortality such as percentages over time.  A variety of research topics have been presented where mortality of the overstory trees is studied in a limited fashion, such as shelterwood-burns, invasive species such as emerald ash borer, and deferment cutting  

    Studies of the effect of forest management on tree grade exist but were limited in the past by a lack of statistical program capability and a need for advancements in the theory of generalized linear mixed models.  With newer tools available, a more rigourous approach can be implemented to analyzing the effect of forest management on tree grade.  This allows for better estimation of hardwood yields across the region.

    Growth and yield modeling is an important tool for consultants, land managers, and software developers with models needing to be developed for Appalachian forests.  In some cases, there are no available models for particular species (for example Tilia americana or Fagus grandifolia), while for others an important input, site index, is not representative of the region.  .  Appalachian hardwoods are critical to sustaining the hardwood forest products industry which supports many rural communities in the region, while the latter is an endangered ecosystem in need of restoration.  Beyond the issue of unavailable and unsuitable growth and yield models, changes in forest management practices and changing climate are also factors influencing the need for new models.

    Education

    • Virginia Polytechnic Institute and State University , Doctor Of Philosophy Forestry and Forest Products (Forest Biometrics) 2009
    • Richard Stockton College of New Jersey, B.S. Environmental Science 1994

    Professional Experience

    • Research Forester, USDA Forest Service
      2010 - Current
    • Mathematical Statistician, USDA Forest Service
      2000 - 2009

    Featured Publications & Products

    Publications

    Research Highlights

    HighlightTitleYear


    NRS-2017-53
    Forest management demonstration area highlights working forest

    New research published in 2017 describes the results of a 60-year forest management demonstration area on the Fernow Experimental Forest and the ...

    2017


    NRS-2015-161
    Silvicultural Prescriptions Affect Hardwood Tree Quality Over Five Decades of Management

    Analysis of 50-year records of harvests on the Fernow Experimental Forest in west Virginia by Forest Service scientists demonstrates that diamet ...

    2015


    NRS-2017-48
    Study reveals how to minimize overstory mortality when using shelterwood-burn techniques to restore oak forests

    Hardwood forests, and especially oak forests, in the eastern U.S. often require fire to create forest conditions suitable for successful stand r ...

    2017


    NRS-2014-065
    Sustaining Tree Quality Under Three Harvesting Methods

    The quality of trees grown and harvested under various methods exhibits changing patterns over time. A Forest Service scientist studied three me ...

    2014


    Last updated on : 07/01/2020