Shaw, David

Extension Forest Health Specialist

Office Location: 
Richardson 218
Email Address: 
Curriculum Vitae: 

PhD, 1991, Forest Protection and Silviculture, University of Washington
MS, 1982, Biology and Plant Ecology, Western Washington University
BS, 1977, Biology, Northern Arizona University

Areas of Interest: 

Forest Health.  Forest Pathology, Forest Entomology, Forest Ecology, Mistletoes, Insects/Diseases interaction with Fire, Silviculture and Management.

Forest Health In Oregon: State of the State 2018 was held Feb 28, March 1, 2018.  See the presentations posted at: http://blogs.oregonstate.edu/foresthealth/

Forestry and Natural Resources Extension:I serve those interested in forest and tree health in Oregon with a focus on County Forestry Extension Agents and their clientele, forestry professionals, and small woodland owners and tree farmers.

Swiss Needle Cast Cooperative:

I am Director of the Swiss Needle Cast Cooperative (http://sncc.forestry.oregonstate.edu/).  Swiss needle cast is foliage disease that is specific to Douglas-fir caused by the Ascomycete fungus Phaeocryptopus gaeumannii.  The disease was first described in Europe, but the fungus is native to western North America.  The cooperative is a collaboration of industry, agencies, extension and academia which is  focused on research, monitoring and outreach concerning impacts, epidemiology, spread and intensification of this disease.

PI.  Permanent Vegetation Plots:

Collaborating with David Bell, PNW Research Station. Rob Pabst, OSU FRA manages field crews, plot measurement, and data storage. H.J. Andrews Experimental Forest, Long-term research network (LTER), and regional collaborators.  National Science Foundation, HJA Long term ecological research network 7 co-PI.  We manage a permanent plot network to measure vegetation and tree dynamics across 145 installations in western Washington and NW Oregon, visited every 5-6 years.  Some plots have been measured for over 100 years, and include USFS early plot installations.  45 installations occur on the HJA.  Provides data for assessing long term forest health and mortality.

Graduate Students Interested in Working in the Forest Health Lab:
I accept students as finding allows, if interested in graduate school, contact me and include a resume.

Forest Health Lab:
Faculty Research Assistants:

Graduate Students:

  • Adam Bouche, MS, FES, co-advised with Klaus Puettman (major)
  • Sky Lan, Ph.D. Candidate, FERM

FOR599.  Field Forest Health. 3 credits.  Taught Fall quarter.

Recent Publications: 

Agne, M.C., P.A. Beedlow, D.C. Shaw, D.R. Woodruff, E.H. Lee, S.P. Cline, and R.L. Comeleo.  2018.  Interactions of predominant insects and diseases with climate change in Douglas-fir forests of western Oregon and Washington.  Forest Ecology and Management 409: 371-332.

Wilhelmi, N., D.C. Shaw, C.A. Harrington, J.B. St. Clair, and L. Ganio.  2017.  Climate of seed-source affects susceptibility of coastal Douglas-fir to foliage diseases.  Ecosphere 8(12):e02011. 10.1002/ecs2.2011

Shaw, D.C. and M.C. Agne.  2017.  Fire and Dwarf Mistletoe (Viscaceae: Arceuthobium species) in Western North America: Contrasting Arceuthobium tsugense and Arceuthobium americanum.  Botany 95(3): 231-246, 10.1139/cjb-2016-0245.

Pritchard, K.R., J.C. Hagar, and D.C. Shaw.  2017.  Avian Abundance and Diversity are Associated with Oak Mistletoe (Phoradendron villousm) in Willamette Valley Quercus Woodlands. Botany 95(3): 283-294, 10.1139/cjb-2016-0249.

Shaw, D.C., T. Woolley, R.G. Kelsey, B.A. McPherson, D. Westlind, D.L. Wood, and E.K. Peterson.  2017.  Surface fuels in recent Phytophthora ramorum created gaps and adjacent intact Quercus agrifolia forests, East Bay Regional Parks, California, USA.  Forest Ecology and Management.  384: 331-338.

Hrinkevich KH, Progar RA, Shaw DC (2016) Climate Risk Modelling of Balsam Woolly Adelgid Damage Severity in Subalpine Fir Stands of Western North America. PLoS ONE 11(10): e0165094. doi:10.1371/journal.pone.0165094

Ritokova, G., D.C. Shaw, G. Filip, A. Kanaskie, J. Browning, and D. Norlander.  2016.  Swiss needle cast in Western Oregon Douglas-fir plantations: 20-year monitoring results.  Forests 7, 155; doi:10.3390/f7080155.

Hrinkevich, K., R. Progar, and D.C. Shaw.  2016.  A severity rating system for evaluating stand-level balsam woolly adelgid (Hemiptera: Adelgidae) damage in two Abies species in western North America.  Forest Science 62: 181-189.

Meigs, G.W., J.L. Campbell, H.S.J. Zald, J.D. Bailey, D.C. Shaw, and R.E. Kennedy.  2015.  Does wildfire likelihood increase following insect outbreaks in conifer forests.  Ecosphere 6(7):118. http://dx.doi.org/10.1890/ ES15-00037.1

Mortenson, L.A., A.N. Gray, and D.C. Shaw.  2015.  A forest health inventory assessment of red fir (Abies magnifica) in upper montane California.  Ecoscience http://dx.doi.org/10.1080/11956860.2015.1047142

Miller-Pierce, M., D.C. Shaw, A. DeMarco, and P.T. Oester.  2015.  Introduced and native parasitoid wasps associated with larch casebearer (Lepidoptera: Coleophoridae) in western larch.  Environmental Entomology. 1–7 (2015); DOI: 10.1093/ee/nvu016

Agne, M. C., D.C. Shaw, T.J. Woolley, and M. E. Queijeiro-Bolaños.  2014.  Effects of dwarf mistletoe on stand structure of lodgepole pine forests 21-28 years post-mountain pine beelte mortality in central Oregon.  PLoS ONE 9: e107532.  Doi: 10.1371/journal.pone.0107532.

Ganio, L.M., T.Woolley, D.Shaw, and S. Fitzgerald.  2014.  The discriminatory ability of postfire tree mortality logistic regression models.  Forest Science 60: doi.10.5849/forsci. 13-146.

Marias, D., F. Meinzer, D.R. Woodruff, D.C.Shaw, S. Voelker, R.J. Brooks, J. McKay, and K. Falk.  2014.  Impacts of dwarf mistletoe on the physiology of host Tsuga heterophylla trees as recorded in tree ring C and O stable isotopes.  Tree Physiology doi:10.1093/treephys/tpu046. 

Saffell, B.J., F.C. Meinzer, D.R. Woodruff, D.C. Shaw, S.L. Voelker, B. Lachenbruch, K. Falk.  2014.  Seasonal carbohydrate dynamics and growth in Douglas-fir trees experiencing chronic fungal-mediated reduction in functional leaf area.  Tree Physiology.  doi:10.1093/treephys/tpu002.

Shaw, D.C., T. Woolley, and A. Kanaskie.  2014.  Vertical foliage retention in Douglas-fir across environmental gradients of the western Oregon Coast Range influenced by Swiss needle cast.  Northwest Science 88: 23-32.

Saffell, B.J., F.C. Meinzer, S.L. Voelker, D.C. Shaw, J.R. Brooks, B. Lachenbruch, J. McKay.  2014.  Tree-ring stable isotopes record the impact of a foliar fungal pathogen on CO2 assimilation and growth in Douglas-fir.  Plant, Cell and Environment: doi: 10.1111/pce.12256.

Lee, E.H., P.A. Beedlow, R.S. Waschmann, C.A. Burdick, D.C. Shaw.  2013.  Tree-ring analysis of the fungal disease Swiss needle cast in Western Oregon coastal forests.  Canadian Journal of Forest Research.43: 677-690.

Kelsey, R.G., M. Beh, D.C. Shaw, and D.K. Manter.  2013.  Ethanol attracts scolytid beetles to Phytophthora ramoum cankers on coast live oak.  Journal of Chemical Ecology.  39: 494-506.  Online ISSN 0098-0331, DOI 10.1007/s10886-013-0271-6.

Mulvey, R.L., D.C. Shaw, and D.A. Maguire.  2013.  Fertilization impacts on Swiss needle cast disease severity in Douglas-fir.  Forest Ecology and Management 287: 147-158.

Woolley, T., D.C. Shaw, L.M. Ganio, and S. Fitzgerald.  2012.  A review of logistic regression models used to predict post-fire tree mortality of western North American conifers. International Journal of Wildland Fire 21:1-35.  http://dx.doi.org/10.1071/WF09039

Chumura, D.J., P.D. Anderson, G.T. Howe, C.A. Harrington, J.E. Halofsky, D.L. Peterson, D.C. Shaw, and B. St. Clair. 2011. Forest Responses to climate change in the northwestern United States: ecophysiological foundations for adaptive management.  Forest Ecology and Management.  261: 1121-1142.


Extension Publications and Forest Insect and Disease Leaflets

EM 9161.  March 2017.  Pest Scene Investigator: A Training Curriculum.  Strong, N., P.T. Oester, D.C. Shaw, B. Saffell, T. Fegel, and C. Berger.   OSU Extension Service Publication.

EM 9137.  March 2016.  The Hidden Threat in Firewood:  Invasive Forest Pests.  Shaw, D., A Grotta, W. Williams, R. Rippy, and S. Bowers.  OSU Extension Service Publication.

Common Insects and Diseases of Sitka Spruce on the Oregon Coast.  EM 9015.  January 2015.  23 pages.  Authors: Jim Reeb and David Shaw.

Diseases and Insect Pests of Pacific Madrone. EC 1619-E, May 2008. 5 pages. Authors: Max Bennett and David Shaw. 

Common Insects and Diseases of Shore Pine on the Oregon Coast. EM 9008-E. September 2010. 14 pages. Authors: Jim Reeb and David Shaw.

Managing Insects and Diseases of Oregon Conifers.  EM 8980.  June 2009. 98 pages.  Authors:  David C. Shaw, Paul T. Oester, Greg M. Filip. ($15)


Book Chapters

Shaw, D.C. and R.L. Mathiasen.  2013.  Management of Higher Parasitic Plants – Mistletoes.  Chapter 5.  In:  Infectious Forest Diseases.  Edited by G. Nicolotti, and P. Gonthier.  CABI Press.  

Shaw, D.C. 2004. Vertical Organization of Canopy Biota. Chapter 4, In: M. Lowman and B. Rinker. Forest Canopies 2nd Edition. Elsevier/Academic Press.


Recent Theses

Randi Shaw, MS  FES.  Co-advised with Paul Anderson (USFS/FES). 2016. Thesis: Tree vigor response and competitive-zone density in mature ponderosa pine.
Sean Prive, MS FES. 2016.  Thesis: Overstory Structure and Community Characteristics of Oregon Ash (Fraxinus latifolia) Forests of the Willamette Valley, Oregon.
Nicholas Willhelmi, MS  FERM.  2016.  Thesis: The Effects of Seed Source and Planting Environment on Douglas-fir (Pseudotsuga menziesii) Foliage Diseases.
Kyle Pritchard.  2015.  Bird Abundance and Microhabitat Associations with Oak Mistletoe in Willamette Valley Oak Woodlands.  MS Thesis, Oregon State University.
Alexanderson, Dorian. 2014.   Case Study - Commerical thinning on the Hood Canal Tree Farm. Does it pay? MF. Oregon State University.
DeMarco, Ari. 2014.   Pine butterfly (Neophasia menapia) outbreak in the Malheur National Forest, Blue Mountains, Oregon: Examining patterns of defoliation. MS. Oregon State University.
Agne, Michelle. 2013.   Influence of dwarf mistletoe (Arceuthobium americanum) on stand structure, canopy fuels, and fire behavior in lodgepole pine (Pinus contorta) forests 21-28 years post-mountain pine beetle (Dendroctonus ponderosae) epidemic in central Oregon.  MS. Oregon State University.
Mortenson, Leif A. 2011.   Spatial and ecological analysis of red fir decline in California using FIA data. MS. Oregon State University. 
Norlander, Danny. 2008.   Effect of Site and Silvicultural Treatment on Insect Pests and Diseases of Young Ponderosa Pine. MS. Oregon State University.