Trees on the Edge: Understanding & Managing Douglas-fir Decline & Mortality in SW Oregon — AGENDA

May 4, 2023, OSU Extension, 569 Hanley, Central Point

Workshop objectives:

  • Provide an update on what we know about the causes, trends, and future projections of DF decline and mortality in SW Oregon/N. CA.
  • Give practitioners tools for assessing DF mortality risk at the individual tree, stand and landscape scales
  • Describe and discuss reasonable strategies practitioners, owners, and managers can use to manage DF decline before, during, and after mortality. 

Target audiences:

  • Foresters, silviculturists, planners, agency managers, other natural resource professionals in the Klamath-Siskiyou ecoregion; experienced forest and woodland owners

8:30 Douglas-fir decline and mortality in SW Oregon: status, trends, and impacts. Laura Lowrey, Forest Health Protection, US Forest Service

PDF Recording

9:00 Douglas-fir decline and mortality in SW Oregon: why here, why now?  Max Bennett, Forestry Agent, OSU Extension 

PDF Recording

9:15 The flatheaded fir borer: knowns & unknowns. Bill Schaupp, Forest Health Protection, US Forest Service (retired)

PDF Recording

9:45 Other agents of Douglas-fir dieback & mortality. Don Goheen, Forest Health Protection, US Forest Service (retired)

PDF Recording

10:30 Drought ecophysiology and implications for Douglas-fir mortality.          Matt Powers, Assistant Professor, Oregon State University

PDF Recording

11:15 DF mortality: Fuels and fire issues. Jena Volpe, Fire Ecologist, and Jesse Kiene, Fire Management Specialist, Bureau of Land Management, Medford District

PDF Recording

12:30 The future of DF in SW Oregon: genetic and climate change considerations. Glenn Howe, Associate Professor, Oregon State University

PDF Recording

13:15 Management issues and strategies – practitioner’s panel. 

  • Eric Siemer, O & C Forester, Medford BLM.   Operational considerations. PDF Recording
  • Lisa Meredith, District Silviculturist & Inventory Specialist, Medford BLM.  Landscape planning considerations.  PDF Recording
  • Marty Main, Owner, Small Woodland Services Inc.  Experiences managing DF on private & City lands.  PDF Recording
  • Danny Cluck, Entomologist, USFS Forest Health Protection, Region 5.  DF mortality issues and perspectives, N. California PDF Recording

Panel discussion recording

15:00 Findings and recommendations from DF mortality working group – panel discussion

Risk assessment, Laura Lowrey PDF Recording

Stand management, Max Bennett PDF Recording

Landscape prioritization, Chris Adlam PDF Recording

 Questions? Contact Max Bennett, OSU Extension, 541-930-8404,

Oregon State University Extension Service prohibits discrimination in all its programs, services, activities, and materials.  This publication will be made available in an accessible alternative format upon request. Please contact Sandy O’Neill 541-776-7371,

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