Climate Change Impacts on PNW Trees Symposium (Live, Interactive Webinar)
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Climate Change Impacts on PNW Trees Symposium with Julian Dunster, PhD; Tom Hinckley, PhD, Emeritus Professor; Jason Battles, Urban Forester; and Cecil Konijnendijk, Professor of Urban Forestry. Awarded 5 CEU's - CA 5, Municipal: 5 BCMA - Science: 0.5; Practice: 1.5; Management: 3

When: Tuesday, September 15, 2020
8:30 AM
Where: Live, Interactive Webinar
United States
Contact: 503-874-8263

Online registration is closed.
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Climate change introduces a new challenge for municipalities as it has the potential to affect areas of forest cover in ways we may not yet completely understand. The recent lack of cold winters, attributed to climate change, has allowed for the mountain pine beetle to wipe out enormous areas of forest land in Canada and the United States. Prolonged drought in California lead to thousands of acres of dead and dying trees in urban and rural areas. Dead and dying trees lead to increased chance of forest fires.

The goal for the symposium is to lay out a foundation of ideas and experiences, and use those to develop long term action plans to combat the effects of climate change. Along the way we hope to see if we can sort out fact from fiction. By the end of the day we will have a starting point for further debate, some sense of the science available, and initial paths to work on. Our hope is that we can use this material to start focusing on what we have, what we might lose, and how we can work in urban areas to increase the resiliency of our urban forests to enhance their chances of long-term survival.



8:30-8:45         Welcome

8:45-9:45         Pacific Northwest Climate Observations and Implications (Julian Dunster, PhD | Dunster and Associates (Program Chair and Moderator)

This presentation will set the stage for the day and establish a baseline context for our conversations about climate change impacts on trees in the Pacific Northwest. Dr. Dunster will explore climate science and trends, and discuss resulting challenges being observed in the field. He will begin the day’s discussion of what arborists and allied professionals can do to mitigate for and adapt to these emerging challenges and how we should set about accomplishing these tasks.

9:45-10:00       Break

10:00-11:00     Applied Strategies for Climate Change in the Urban Landscape (Drew Zwart, PhD, Plant Pathologist / Physiologist | Bartlett Tree Research Labs)

This presentation will cover several practical, field applicable concepts regarding climate change impacts on the urban forest. Specific case studies and research examples will be provided to illustrate shifting realities in tree management under changing conditions.  Attendees will learn about various stress mitigation options for existing trees, disease and insect concerns for trees under stress, and general practices and concepts to reduce the impacts of a changing climate in the future.

11:00-12:00     Tree Water and Carbon Relations: Current Thinking for the Professional
(Tom Hinckley, PhD, Emeritus Professor | University of Washington)

This presentation will explore how trees die from too little water – offering current thinking and evidence from aspen, ponderosa pine, and pinyon pine dieback in the Rockies and Southwest US.  Management solutions will be discussed.  We’ll also discuss factors involved in understanding whether trees really have greater growth when they are old.

12:00-12:45     Lunch

12:45-1:45       Adaptive Management for Climate Change in the Urban Forest
(Jason Battles, Urban Forester | Snoqualmie, Washington, USA)

A vulnerability assessment and adaptive management are required to sustain and enhance the environmental, economic and social benefits provided by the urban forest amidst a rapidly changing climate. Planning for resistance, resiliency and transition will encourage a vibrant urban forest far into the future. To that end, the completion of a climate change vulnerability assessment and the implementation of 10 adaptive management strategies, approaches and tactics using the Urban Forest Climate Change Response Framework have been adopted and are in practice today by Snoqualmie’s Urban Forestry Program.

1:45-2:45         Urban Trees as Nature-Based Solutions for Grand Challenges
(Cecil Konijnendijk, Professor of Urban Forestry | University of British Columbia, Canada)

There is increasing awareness about the important contributions trees and other vegetation make to resilient, healthy, and liveable cities. In times of grand challenges such as climate change, continuing urbanization, and declining public health, there is an urgent need for comprehensive urban forestry programs. This presentation discussed our current knowledge on the roles and benefits of urban forests, and ways in which this knowledge has, or can be integrated into urban planning and urban design.

2:45-3:00         Break

3:00-3:45         Speakers’ Panel, moderated by Julian Dunster

3:45-4:30         Takeaways & next steps