top of page

MEET OUR TEAM

Marie_ForWebsite_Retouched.jpg

Marie V Ambusk

CEO | Founder | Principle Investigator

Since 2006 Marie has been a leader in urban tree stewardship through her volunteerism in Vermont. Upon retirement from GE Healthcare (2011) and a 40-year career in Finance/Controllership IT, she was inspired to solve a global problem that causes early and unnecessary tree mortality. Marie started TreesROI in 2012, believing that “any problem can be solved with science, technology, persistence, a lot of hard work, and a little luck.”

​

Her work is devoted to finding a way to Grow Better Trees.

Research Team

SITE-Team-Greg Fanslow 2023.jpeg

Greg Fanslow

Data Scientist

Greg is the President of Blue Tree Analytics (VT) and our Data Scientist. With his expertise in computer vision, artificial intelligence, image segmentation, machine learning, deep learning, and other modeling techniques, Greg will develop the Root-Analysis Software Algorithm(s) for INSIGHT™ and train the Tree Root Quality Classification Model to predict the manually measured root quality metrics based on the GPR data.

Jason-Grabosky-2025.jpg

Dr. Jason Grabosky

Quality Compliance Leader

Professor of Urban Forestry, Dept. Ecology Evolution, and Natural Resources at Rutgers University (NJ), Jason is recognized worldwide for his research with modified soil that enhances tree root growth in urban environments. He will focus on providing content for the Tree Root Quality Classification Model, developing a grading metric, providing feedback, and evaluating the testing steps to define tree root features and characteristics.

www-2016-Mann.jpg

Gordon Mann

Quality Compliance Leader

The owner of Mann Made Resources (CA), Consulting Arborist, Certified Arborist and Municipal Specialist, and Certified Urban Forester, Gordon is a respected industry leader. He will participate in developing the Tree Root Quality Classification Model, and evaluation of success metrics. His experience with municipalities, and regulatory agencies will guide the development of a meaningful product and service to benefit the urban forestry industry

john_mugshot_edit.jpg

John Mangan

Project CTO

John is VP of IT & Regulatory at Mach 7 Technologies (VT), Owner of Mangan Labs, and our Project CTO. John will facilitate the communication of requirements across the team to bridge the various levels of technical understanding in translating the team’s vision into code. He will design and build the gantry prototype for GPR data collection.

Advisors

Dr. John R. Cary

A scientist, researcher, CEO at Tech-X Corporation, and Professor of Physics at the University of Colorado. John has been a member of our team since 2013 with his insightful leadership, vast experience, and dedication to advances in science and engineering. 

JimFlott_1633.jpg

Jim Flott

Jim is president of Community Forestry Consultants, Inc. (CFC) providing TreeWorks™ tree management software, risk assessment, and management plans. Jim complements our team with his vast experience in the horticulture, urban forestry, and arboriculture industries.

Collaborators

GSSI_LG_2020_01.jpg
CherryLake_LG_2020_01.jpg
bottom of page