Douglas D. Piirto

Skills backed by years of experience

Ph.D., RPF #2179 Professor Emeritus, Consulting Forester

My Story

(1970-2017): 206 Publications/Reports/Presentations as follows: 43publications; 44 Technical Reports; 15 Study Guides/Lab Manuals/Web Pages; 7 professional reports; 11 Opinion Editorials. I have presented 84+ Invited Papers/Posters (i.e., speaking engagements). I have done numerous radio/TV interviews and several news stories focused on my forestry expertise area. I have also served as featured applied forest scientist in the: 1.) Modern Marvels 2004 Logging Technology documentary; 2.) Forest Foundation and California Forest Products Commission DVD titled “Rethinking Forests” in July 2008; and 3.) the March 2009 Fox Sport Science program. Additionally, I have been involved in 18 consulting projects. A list of these publications, study guides, technical reports, and invited papers is provided below.

Grantsmanship 1986-2017 (Total Piirto Project Funding (40 Projects): = $1,515,149; Research/IRA Program Management = $2,650,000

Douglas D. Piirto | Biography


Douglas D. Piirto | Curriculum Vitae


#Douglas D. Piirto, Ph.D.
Professor Emeritus
Consulting Forester


"Doug Piirto is a consummate educator and researcher, and he is an outstanding individual. Doug would be the first person that I would call for help with a forestry related problem. Doug was recognized for his expertise by being selected for membership on the California Board on Forestry. He is a true professional who has attained the highest level of his profession." - Dave Wehner - Cal Poly

Meet Our Team

1.We are dedicated professionals ready to do whatever it takes to provide excellent teaching,

applied research, and sustainable forest and land management advice.”

Douglas D. Piirto, Ph.D.

Douglas D. Piirto, Ph.D.

Owner, Crestline Forestry

Doug retired from California Polytechnic State University in San Luis Obispo after 30 years of productive work in management, teaching , and applied research. He is a Registered Professional Forester and Certified Silviculturist.

Mary Piirto

Mary Piirto

Financial Manager, Crestline Forestry

Mary L. Piirto. Mary was born and raised in a farming family in Madera, California. She has worked for Madera County Credit Bureau, Finance and Thrift and Wells Fargo Bank. Mary retired from Wells Fargo Bank after 33 years of very productive work as a Vice President and Personal Banker. Mary oversees financial management of Crestline Forestry. She is proud of her two sons, 6 grandchildren, and 10 great grandchildren. Her hobbies include cooking, photography, and gardening.

Chris Berger

Chris Berger

Farm Manager, Piirto Farm

Chris’ nickname is Ike and enjoys all forms of outdoor activities associated with farming, forestry, camping, fishing, hunting, and winter sports. He and his wife Judith live in Bruce Crossing, Michigan.

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