Tree Academies

ISA's Continuing Education Unit (CEU) for the attendance of Tree Academies have now been finalized.

Please use the Certification Key below to estimate number of CEUs you will receive when participating in each Tree Academy.

A=Arborist / T=Tree Worker / L=Aerial Lift / M=Municipal / U=Utility / Bs=BCMA Science / Bp=BCMA Practice / Bm=BCMA Management

Construction Site Management

Sunday, September 30, 2018, from 8:00 am to 4:00 pm

Facilitator: Jeremy Barrell and Mark Wadey

Location: Salon D, Westin Bayshore


CEUs: 6.0 for A, T, L, M, U, Bm

Overview: There is an increasing understanding at the highest political level in Britain that trees make places better to live in, which is driving an aspiration to retain more existing trees and plant new ones. However, the practical difficulties are significant, and the dominant trend is still decreasing canopy cover in our urban areas. This workshop will review British approaches to managing trees on construction sites, which may provide some insights for those delegates dealing with similar issues.

Workshop content:
The day will be divided into four sessions of up to 1.5 hours, with a practical outside discussion, if
weather and location permit.
Session 1: TreeAZ; a structured approach to tree assessment for planning purposes
Session 2: Strategic and specific control on construction sites
Sessions 3 & 4: Putting the theory into practice

Suitable for: All built-environment professionals involved in the administration of the planning process involving trees, e.g. arborists, urban foresters, landscape architects, urban planners, planning specialists, and administration managers.

About the facilitators:
Jeremy Barrell and Mark Wadey are both Directors of Barrell Tree Consultancy (, one of Britain’s leading planning and legal tree management practices. They lead a team of 15 specialists assessing trees on construction sites and project-managing their
protection, from design to occupation. The Practice deals with 450 projects a year, invaluable experience that will be drawn upon to inform the programme.


Trees and the Law (Canada)

Sunday, September 30, 2018, from 8:00 am to 4:00 pm

Facilitator: Julian Dunster

Location: Mackenzie Room, Westin Bayshore


CEUs: 6.0 for A, T, L, M, U / 3.0 for Bp / 3.0 for Bm

The workshop starts by understanding terms and legal principles and how these drive professional practice and possible advice to clients. These include:
• Duty of care
• Standard of care
• Negligence
• Liability
• Damages and penalties
Reviewing case studies and court decisions, we will examine why the courts favour or disapprove of certain actions that then help inform us about why professional practice requires certain set actions and processes to keep companies and clients better organized.
Various forms of damage will be reviewed including trespass, personal damage, property damage, and the implications of these for the plaintiff and the defendant. The use of evidence and reports will be discussed to show how these can make or break a case.
The course will be suitable for anyone in the industry including consulting, municipal, and utility arborists and tree care companies.

About the facilitator:
Julian Dunster is the lead author of Arboriculture and the Law in Canada (now out of print). Julian has testified in court cases and served as an expert witness at inquests in Canada and Hong Kong. He regularly writes about trees and legal issues in Tree Service Canada. Julian Dunster is the author of the new book Trees and the Law in Canada which will be available for sale at the event.


Trees and the Law (Canada) Handout

Creating Wildlife Habitat Trees

Sunday, September 30, 2018, from 8:00 am to 4:00 pm

Facilitator: Brian French and Ryan Gilpin

Location: Seymour Room, Westin Bayshore


CEUs: 6.0 A, T, L, M, U/0.75 Bs/1.5 Bp/3.75 Bm

Class participants will have the opportunity to learn best practices regarding the safe retention of tree portions for habitat. Techniques like Coronet Pruning will be demonstrated. In addition, participants will learn how to create bird boxes using pre-existing cavities. Saws can also be utilized to create habitat. We will explore how to attract desired animals by specifying the size and location of wood holes.
As arborists, our job is to evaluate trees and offer solutions to mitigate risks. Frequently, wildlife habitat exists in known tree risks (i.e., cavities, dead snags, or broken tops). In many cases, risks can be reduced and mitigated while retaining existing wildlife habitat or creating new wildlife habitat.
Not all trees need to be used as habitat trees, but in the right place, they can make a substantial, positive difference to the community. Knowing regulatory laws and protected species is the arborist’s responsibility. People taking care of trees must realize the value in preserving and creating habitats so we can all live more symbiotically in the world.

About the facilitator:
Brian French founded Portland-based Arboriculture International LLC in 2013. He is a climbing ISA Certified Arborist and Qualified Tree Risk Assessor. Serving as coordinator for the Oregon Champion Tree Registry and the Chair of the Portland Heritage Tree Program, he focuses on the preservation of significant, old trees and their associated flora and fauna. As an Audubon Society of Portland volunteer, Brian facilitated various ongoing wildlife habitat projects including salmon habitat restoration, snag development, red tree vole surveys, and developing urban wildlife guidelines.


SOLD OUT Principles of Tree Risk Assessment considering Stand and Windthrow Analysis

Sunday, September 30, 2018, from 9:00 am to 12:00 pm in session PLUS 12:00 pm to 3.30 pm on a field trip

Facilitator: Steve Mitchell and Norm Hol

Class Location: Salon E, Westin Bayshore


CEUs: 5.75 for A, T, L, M, U / 2.75 for Bs / 3.0 for Bm

Class participants will have the opportunity to learn about factors that contribute to windfirmness of trees and demonstrate windfirmness assessment procedures.  During the session we will also discuss integration of windfirmness assessment with Tree Risk Assessment protocols with influences of individual tree defects and root disease, environmental stresses and other tree stability factors.


In‐class presentation portion [approximately 3 hours]:
• Wind regimes, routine winds, storms, topography
• Bio‐mechanics of tree acclimation to wind, wind loading and resistance to failure
• Stand dynamics, competition and disturbance impacts on tree and stand stability
• Site effects on wind loading and resistance
• Individual tree attributes
• Investigating historical site factors and predicting site changes from proposed development
• Planning and selecting tree preservation areas to promote windfirmness
• Stand and tree management strategies

Field portion [approximately 2.5 hours + travel time]:

• Open grown/street parkland trees
• Stand‐grown trees ‐ assessing wind, site, stand and tree factors on newly exposed edges
• Assessing wind, site, stand and tree factors on old forest edges/corridors
• Planning tree preservation
• Discussion of management strategies – forest edges, individual trees

About the Facilitator: 
Steve Mitchell PhD, RPF is an Associate Professor in the Faculty of Forestry, University of British Columbia and the Director of the Master of Sustainable Forest Management (MSFM) program. Steve teaches silviculture and forest management in the classroom and field to undergraduate and graduate students. Steve's research program focuses on the mechanics, biology and ecology of wind and tree interactions, including studies in Canada, Belize, Tasmania and the USA, and he was the coordinator of the International Union of Forest Researchers (IUFRO) Wind and Trees Section from 2006 to 2015. Prior to commencing his academic career in the early 1990’s, Steve was an industrial forester and he was recognized as a Distinguished Forest Professional by the Association of BC Forest Professionals (ABCFP) in 2014.