Skip to main content
Skip to main menu Skip to spotlight region Skip to secondary region Skip to UGA region Skip to Tertiary region Skip to Quaternary region Skip to unit footer


Dr. Kim D. Coder

Professor of Tree Biology & Health Care
University Hill Fellow for Distinguished Public Service & Outreach

Elected world President of the International Society of Arboriculture (ISA), past President of the Southern Chapter of ISA (9 states), past President of the international Arboriculture Research &

Education Academy (AREA), and founding member and past President of the Georgia Urban Forest Council.

Appointed to the USDA-Secretary’s NUCFAC (National Urban & Community Forestry Advisory Council), advising on urban and community forestry issues representing the nation's educational institutions.

First person to receive four of ISA’s competitive world awards – the Shigo, Harris, Lilly, and Merit awards.

Granted the Arbor Day Foundation’s highest award -- the J. Sterling Morton award.

Author of over 500 technical publications and articles.

International lecturer and consultant to private citizens, corporations, attorneys, and communities

on tree biology & health care, tree risk, tree appraisal, abiotic tree stress, lightning & tree protection, storm damage, biomechanics, climate change & trees, and community forest ecology.


Outreach programming and educational product development in tree health care, technical arboriculture, abiotic tree & site stress, tree morphology, taxonomy & physiology, tree biology, lightning & tree protection, storm damage & risk assessment, tree biomechanics / structural mechanics, tree risks and hazards, tree appraisal & asset assessment, essential element diagnosis & life-staged based fertilization, climate change & tree impacts, and community forest ecology.

  • PhD, Forest Ecology, Iowa State University
  • MS, Tree Physiology, Iowa State University
  • BS, Forest Management, Iowa State University
Articles Featuring Dr. Kim D. Coder

How trees stand and fall is centered upon the load they are under and how they hold against wind and gravity. Understanding tree structure, and how it bends and twists in the wind, is key to effective risk management along streets, in parks, and across landscapes.

Support Warnell

We appreciate your financial support. Your gift is important to us and helps support critical opportunities for students and faculty alike, including lectures, travel support, and any number of educational events that augment the classroom experience. Learn more about giving.