Research Plant Pathologist
Contact Paul Hennon
- Ecology and management of forest diseases in coastal Alaska
- Management of hemlock dwarf mistletoe and stem decays (heart rots) to desirable levels
- Decomposition and carbon budgets
- Cause of yellow-cedar decline
- Adaptation opportunities for tree species affected by climate
- Ecosystem effects of forest diseases
- Ecology and management of yellow-cedar
- Linking science with tradional ecological knowledge
- Animal damage to forest trees
- Foliar pathogens of conifers
- Regeneration issues of yellow-cedar
- Wood values in dead yellow-cedar
- Epidemiology and population dynamics in yellow-cedar forests
Why This Research is Important
Forest pathology is a small but essential scientific discipline that covers the diseases and abiotic injuries to forest trees. Early in its history, pathology research focused almost exculsively on economic issues in forests related to timber values, such as losses in growth, cull, and mortality. Those needs continue, but pathology research must now deliver knowledge about the roles of forest diseases in a number of ecosystem functions. Stress on forests from climate change has elevated the need for investigations into the cause of various forest problems -- to sort out those that have climate origins, and to help develop adaptive strategies.
- Botany and Plant Pathology, Oregon State University, PhD Forest Pathology, Hansen Lab, 1996
- Research Plant Pathologist, PNW Research and Forest Health Protection (R10)
1986 - Current
- American Phytopathological Society, Member (1986 - Current)
- Northwest Science, Member (1986 - Current)
- Mycological Society of America (MSA), Member (1984 - Current)
Awards & Recognition
- Dave F. Thomas, Technology Transfer Award, 2011
National award, recognized for customer service in forest health protection.
- Alaska Region, Silviculturist of the Year, 2010
Given by forest management peers
- Outstanding Achievement Award, 2010
Western International Forest Disease Work Conference Award
Featured Publications & Products
- Hennon, Paul E.; D'Amore, David V.; Schaberg, Paul G.; Wittwer, Dustin T.; Shanley, Colin S. 2012. Shifting climate, altered niche, and a dynamic conservation strategy for yellow-cedar in the North Pacific coastal rainforest.
- Hennon, Paul E.; D'Amore, David V.; Witter, Dustin T.; Lamb, Melinda B. 2010. Influence of forest canopy and snow on microclimate in a declining yellow-cedar forest of southeast Alaska.
- Hennon, Paul E.; McClellan, Michael H.; Spores, Sheila R.; Orlikowska, Ewa H. 2009. Survival and growth of planted yellow-cedar seedlings and rooted cuttings (stecklings) near Ketchikan, Alaska.
- Kliejunas, John T.; Geils, Brian W.; Glaeser, Jessie Micales; Goheen, Ellen Michaels; Hennon, Paul; Kim, Mee-Sook; Kope, Harry; Stone, Jeff; Sturrock, Rona; Frankel, Susan J. 2009. Review of literature on climate change and forest diseases of western North America.
- Beier, Colin M.; Sink, Scot E.; Hennon, Paul E.; D'amore, David V.; Juday, Glenn P. 2008. Twentieth-century warming and the dendroclimatology of declining yellow-cedar forests in southeastern Alaska.
Publications & Products
- Hennon, P.; Caouette, J.; Barrett, T.; Wittwer, D. 2014. Chapter 14 - Use of Forest Inventory Data to Document Patterns of Yellow-Cedar Occurrence, Mortality, and Regeneration in the Context of Climate (Project WC-EM-09-02).
- McClellan, Michael H.; Hennon, Paul E.; Heuer, Patrick G.; Coffin, Kenneth W. 2014. Condition and deterioration rate of precommercial thinning slash at False Island, Alaska..
- Buma, B.; Hennon, P.E.; Bidlack, A.L.; Baichtal, J.F.; Ager, T.A.; Streveier, G. 2014. Correspondence regarding "The problem of conifer species migration lag in the Pacific Northwest region since the last glaciation" by Eias, S.A., (2013), Quaternary Science Reviews 77, 55-69.
- Deal, Robert L.; Hennon, Paul; O'Hanlon, Richard; D'Amore, David. 2014. Lessons from native spruce forests in Alaska: managing Sitka spruce plantations worldwide to benefit biodiversity and ecosystem services.
- Hennon, Paul E.; Mulvey, Robin L. 2014. Managing heart rot in live trees for wildlife habitat in young-growth forests of coastal Alaska.
- Hennon, Paul; Wittwer, Dustin. 2013. Evaluating key landscape features of a climate- induced forest decline (Project WC-EM-07-01).
- Oliver, Marie; Hennon, Paul; D'Amore, David. 2013. Forests in decline: yellow-cedar research yields prototype for climate change adaptation planning.
- Barrett, Tara M.; Latta, Greg; Hennon, Paul E.; Eskelson, Bianca N.I.; Temesgen, Hailemariam. 2012. Host-parasite distributions under changing climate: Tsuga heterophylla and Arceuthobium tsugense in Alaska.
- Sturrock, R.N.; Frankel, Susan; Brown, A. V.; Hennon, Paul; Kliejunas, J. T.; Lewis, K. J.; Worrall, J. J.; Woods, A. J. 2011. Climate change and forest diseases.
- Schaberg, Paul G.; D'Amore, David V.; Hennon, Paul E.; Halman, Joshua M.; Hawley, Gary J. 2011. Do limited cold tolerance and shallow depth of roots contribute to yellow-cedar decline?.
- Wolken, Jane M.; Hollingsworth, Teresa N.; Rupp, T. Scott; Chapin, F. Stuart, III.; Trainor, Sarah F.; Barrett, Tara M.; Sullivan, Patrick F.; McGuire, A. David; Euskirchen, Eugenie S.; Hennon, Paul E.; Beever, Erik A.; Conn, Jeff S.; Crone, Lisa K.; A'More, David V.; Fresco, Nancy; Hanley, Thomas A.; Kielland, Knut; Kruse, James J.; Patterson, Trista; Schuur, Edward A.G.; Verbyla, David L.; Yarie, John. 2011. Evidence and implications of recent and projected climate change in Alaska's forest ecosystems.
- Schaberg, Paul G.; Hennon, Paul E.; D'amore, David V.; Hawley, Gary J. 2008. Influence of simulated snow cover on the cold tolerance and freezing injury of yellow-cedar seedlings.
- Beier, Colin M.; Sink, Scott E.; Hennon, Paul E.; D'Amore, David V.; Juday, Glenn P. 2008. Twentieth-century warming and the dendroclimatology of declining yellow-cedar forests in southeastern Alaska.
- Muir, John A.; Hennon, Paul E. 2007. A synthesis of the literature on the biology, ecology, and management of western hemlock dwarf mistletoe..
- Hennon, Paul; Woodward, Bessie; Lebow, Patricia. 2007. Deterioration of wood from live and dead Alaska yellow-cedar in contact with soil.
- Hennon, P.; D'Amore, D.; Wittwer, D.; Johnson, A.; Schaberg, P.; Hawley, G.; Beier, C.; Sink, S.; Juday, G. 2006. Climate warming, reduced snow, and freezing injury could explain the demise of yellow-cedar in southeast Alaska, USA.
- Gomi, Takashi; Johnson, Adelaide C.; Deal, Robert L.; Hennon, Paul E.; Orlikowska, Ewa H.; Wipfli, Mark S. 2006. Factors affecting distribution of wood, detritus, and sediment in headwater streams draining managed young-growth red alder-conifer forests in southeast Alaska.
- Kelsey, Rick G.; Hennon, Paul E.; Huso, Manuela; Karchesy, Joseph G. 2005. Changes in heartwood chemistry of dead yellow-cedar trees that remain standing for 80 years or more in southeast Alaska..
- Hennon, Paul E.; D'Amore, David V.; Zeglan, Stefan; Grainger, Mike. 2005. Yellow-cedar decline in the North Coast Forest District of British Columbia..
- Deal, Robert L.; Hennon, Paul E.; Orlikowska, Ewa H.; D'Amore, David V. 2004. Stand dynamics of mixed red alder-conifer forests of southeast Alaska..
- Wipfli, Mark S.; Deal, Robert L.; Hennon, Paul E.; Johnson, Adelaide C.; Edwards, Richard T.; De Santo, Toni L.; Gomi, Takashi; Orlikowska, Ewa H.; Bryant, Mason D.; Schultz, Mark E.; LeSage, Christian; Kimbirauskus, Ryan; D'Amore, David V. 2003. Compatible management of red alder-conifer ecosystems in southeastern Alaska..
- Deal, Robert L.; Tappeiner, J.C.; Hennon, Paul E. 2002. Developing silvicultural systems based on partial cutting in western hemlock–Sitka spruce stands of southeast Alaska..
- Wipfli, Mark S.; Deal, Robert L.; Hennon, Paul E.; Johnson, Adelaide C.; de Santo, Toni L.; Hanley, Thomas A.; Schultz, Mark E.; Bryant, Mason D.; Edwards, Richard T.; Orlikowska, Ewa H.; Gomi, Takashi. 2002. Managing young upland forests in southeast Alaska for wood products, wildlife, aquatic resources, and fishes: problem analysis and study plan..
- McClellan, Michael H.; Swanston, Douglas N.; Hennon, Paul E.; Deal, Robert L.; de Santo, Toni L.; Wipfli, Mark S. 2000. Alternatives to clearcutting in the old-growth forests of southeast Alaska: study plan and establishment report..
- De Groot, Rodney C.; Woodward, Bessie; Hennon, Paul E. 2000. Natural decay resistance of heartwood from dead, standing yellow-cedar trees : laboratory evaluations.
|Scientists Find Cause of Yellow-cedar Death in Alaska's Coastal Forests|
Absence of snow to protect shallow roots results in roots freezing and extensive tree death