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Connie Harrington, PhD

Volunteer

Connie Harrington, PhD

Emeritus Scientist

Pacific Northwest Research Station

connie.harrington@usda.gov

Email

Publications & Products
Related
Education

Treesearch Publications

Adam Sibley, Christopher Still, Matthew Gregory, Connie Harrington, David Shaw, Nina Ferrari, Alex Dye, Mark Schulze, Glenn Howe, David E. Rupp, Christopher Daly, Daniel DePinte, Cameron E. Naficy, Chaney Hart, David M. Bell. 2025. Extreme heatwave causes immediate, widespread mortality of forest canopy foliage, highlighting modes of forest sensitivity to extreme heat
Robert A. Slesak, Michelle Agne, Connie Harrington, Matthew D. Powers. 2025. Douglas-fir dominates when grown in dual species mixtures with three western conifers
Andrea Watts, Connie Harrington, Richard Cronn. 2025. Timing is everything! Insights from Douglas-fir response to the 2021 heat dome
Robert A. Slesak, Michelle Agne, Connie Harrington, Matthew Powers. 2025. Long-term effects of tree spacing during reforestation on survival and growth of three important tree species in the Pacific Northwest, USA
Bryce Frank, Francisco Mauro, Connie Harrington, Kevin R. Ford. 2024. A method for updating variable radius plot surveys
C Still, A Sibley, D DePinte, P Busby, Connie Harrington, M Schulze, D Shaw, David R. Woodruff, D Rupp, C Daly, W Hammond, G Page. 2023. Causes of widespread foliar damage from the June 2021 Pacific Northwest Heat Dome: more heat than drought
Connie Harrington, Peter Gould, Richard Cronn. 2023. Site and provenance interact to influence seasonal diameter growth of Pseudotsuga menziesii
Dryw Jones, Connie Harrington, Brad St. Clair. 2022. Influence of climate on annual changes in Douglas-fir stem taper
Yianna Bekris, Janet S. Prevéy, Leslie C. Brodie, Connie Harrington. 2021. Effects of variable-density thinning on non-native understory plants in coniferous forests of the Pacific Northwest
Thomas Dean, Anthony D’Amato, Brian J. J. Palik, Michael A. Battaglia, Connie Harrington. 2020. A Direct Measure of Stand Density Based on Stand Growth
Janet S. Prevéy, Lauren E. Parker, Connie Harrington. 2020. Projected impacts of climate change on the range and phenology of three culturally-important shrub species
Janet S. Prevéy, Lauren E. Parker, Connie Harrington, Clayton T. Lamb, Michael F. Proctor. 2020. Climate change shifts in habitat suitability and phenology of huckleberry (Vaccinium membranaceum)
Jacob L. Strunk, Connie Harrington, Leslie C. Brodie, Janet S. Prevéy. 2020. Seeing the forest below the trees: occurrences of shrubs in the Pacific Northwest
Josh McDaniel, Janet S. Prevey, Connie Harrington, Brad St. Clair. 2019. Nature and Nurture: Genetics and Climate Influence the Timing of Flowering in Trees
Dryw Jones, Connie Harrington, David Marshall. 2018. Modeling wound-closure response over time in Douglas-fir trees
Dryw Jones, Connie Harrington, David Marshall. 2018. Survival, and growth response of Douglas-fir trees to increasing levels of bole, root, and crown damage
Rhonda Mazza, Connie Harrington, Brad St. Clair, Kevin Ford. 2018. Done for the season: How do Douglas-fir know when to stop growing?
Janet S. Prevey, Connie Harrington. 2018. Effectiveness of winter temperatures for satisfying chilling requirements for reproductive budburst of red alder (Alnus rubra)
John L. Willis, Scott D. Roberts, Connie Harrington. 2018. Variable density thinning promotes variable structural responses 14 years after treatment in the Pacific Northwest
Janet S. Prevey, Connie Harrington, Brad St. Clair. 2018. The timing of flowering in Douglas-fir is determined by cool-season temperatures and genetic variation
Connie Harrington, Scott M. Holub, Cici Bauer, Ashley Steel. 2017. The distribution of tree roots in Douglas-fir forests in the Pacific Northwest in relation to depth, space, coarse organic matter and mineral fragments.
Nicholas P. Wilhelmi, David C. Shaw, Connie Harrington, Brad St. Clair, Lisa M. Ganio. 2017. Climate of seed source affects susceptibility of coastal Douglas-fir to foliage diseases
Robert Curtis, Connie Harrington, Leslie C. Brodie. 2017. Stand development 18 years after gap creation in a uniform Douglas-fir plantation
Connie Harrington, Brad St. Clair. 2017. The Douglas-fir seed-source movement trial yields early results
Kevin Ford, Connie Harrington, Brad St. Clair. 2017. Photoperiod cues and patterns of genetic variation limit phenological responses to climate change in warm parts of species’ range: Modeling diameter-growth cessation in coast Douglas-fir
Kevin Ford, Connie Harrington, Sheel Bansal, Peter Gould, Brad St. Clair. 2016. Will changes in phenology track climate change? A study of growth initiation timing in coast Douglas-fir
Connie Harrington, Kevin Ford, Brad St. Clair. 2016. Phenology of Pacific Northwest tree species
Sheel Bansal, Connie Harrington, Brad St. Clair. 2016. Tolerance to multiple climate stressors: a case study of Douglas-fir drought and cold hardiness
Robert Curtis, Sheel Bansal, Connie Harrington. 2016. Relation of initial spacing and relative stand density indices to stand characteristics in a Douglas-fir plantation spacing trial
Andrea Watts, Connie Harrington, Peter Gould. 2016. Rise and shine: How do northwest trees know when winter is over?
Connie Harrington, William C. Carlson. 2015. Morphology and accumulation of epicuticular wax on needles of Douglas-fir (Pseudotsuga menziesii var. menziesii)
Andrea Watts, Sheel Bansal, Connie Harrington, Brad St. Clair. 2015. Predicting Douglas-fir's response to a warming climate
D. M. Burner, D. K. Brauer, J. L. Snider, Connie Harrington, P. A. Moore. 2014. Phenological responses of juvenile pecan and white oak on an upland site
Peter J. Gould, Connie Harrington. 2013. Making the little things count: modeling the development of understory trees in complex stands
Warren Devine, Connie Harrington. 2013. Restoration release of overtopped Oregon white oak increases 10-year growth and acorn production
Warren D. Devine, Paul W. Footen, Robert B. Harrison, Thomas A. Terry, Connie Harrington, Scott M. Holub, Peter J. Gould. 2013. Estimating tree biomass, carbon, and nitrogen in two vegetation control treatments in an 11-year-old Douglas-fir plantation on a highly productive site
Joan O'Callaghan, Leslie C. Brodie, Connie Harrington, Peter Gould, Warren Devine. 2012. Remember redcedar! An overlooked species reveals its potential
Peter J. Gould, Connie Harrington, Brad St. Clair. 2012. Growth phenology of coast Douglas-fir seed sources planted in diverse environments
Peter Gould, Connie Harrington, Warren Devine. 2011. Growth of Oregon white oak (Quercus garryana)
Connie Harrington, Warren Devine. 2011. Stand development following precommercial thinning and fertilization treatments in a western redcedar (Thuja plicata) dominated forest
Warren Devine, Connie Harrington. 2011. Factors affecting diurnal stem contraction in young Douglas-fir
Noreen Parks, Connie Harrington, Brad St. Clair, Peter. Gould. 2010. The future of spring bud burst: looking at the possibilities
Emily J. Comfort, Scott D. Roberts, Connie Harrington. 2010. Midcanopy growth following thinning in young-growth conifer forests on the Olympic Peninsula, western Washington
Connie Harrington, Peter Gould, Brad St. Clair. 2010. Modeling the effects of winter environment on dormancy release of Douglas-fir
Warren Devine, Connie Harrington, Joe Kraft. 2010. Acorn storage alternatives tested on Oregon white oak
Warren Devine, Connie Harrington, Dean S. DeBell. 2010. Intra-annual growth and mortality of four Populus clones in pure and mixed plantings
Warren Devine, Connie Harrington. 2010. Planting native oak in the Pacific Northwest
Peter Gould, Connie Harrington. 2009. Root morphology and growth of bare-root seedlings of Oregon white oak
Warren Devine, Connie Harrington. 2009. Relationships among foliar phenology, radial growth rate, and xylem density in a young Douglas-fir plantation
Dave H. Peter, Connie Harrington. 2009. Six years of plant community development after clearcut harvesting in western Washington
Dave H. Peter, Connie Harrington. 2009. Synchronicity and geographic variation in Oregon white oak acorn production in the Pacific Northwest
Connie Harrington, William Schuette. 2009. Evaluating sites for planting hardwoods in the Pacific Northwest
Heather Erickson, Connie Harrington, David D. Marshall. 2009. Tree growth at stand and individual scales in two dual-species mixture experiments in southern Washington State, USA
Timothy B. Harrington, Connie Harrington, Dean S. DeBell. 2009. Effects of planting spacing and site quality on 25-year growth and mortality relationships of Douglas-fir (Pseudotsuga menziesii var menziesii).
Morris G. Cline, Neela Bhave, Connie Harrington. 2009. The possible roles of nutrient deprivation and auxin repression in apical control
Adrian Ares, Connie Harrington, Thomas A. Terry, Joe Kraft. 2009. Vegetation control effects on untreated wood, crude cellulose and holocellulose δ¹³C of early and latewood in 3- to 5-year-old rings of Douglas-fir
Dariene Southworth, Elizabeth M. Carrington, Jonathan L. Frank, Peter Gould, Connie Harrington, Warren Devine. 2009. Mycorrhizas on nursery and field seedlings of Quercus garryana
Yasmeen Sands, Connie Harrington. 2008. Pacific Northwest Oak Communities [Brochure]
Peter Gould, Connie Harrington. 2008. Evaluation of landscape alternatives for managing oak at Tenalquot Prairie, Washington.
Warren Devine, Connie Harrington, David H. Peter. 2007. Oak woodland restoration: understory response to removal of encroaching conifers.
Leslie C. Brodie, Connie Harrington. 2006. Response of young red alder to pruning
Connie Harrington, Christel C. Kern. 2002. Will Garry oak respond to release from overtopping conifers
David Peter, Connie Harrington. 2002. Site and tree factors in Oregon white oak acorn production in western Washington and Oregon
Connie Harrington, Karl R. Buermeyer, Leslie C. Brodie, Bryan W. Wender. 2002. Factors influencing growth and flowering of understory plants in conifer stands in Western Washington

Data and Tools

University of Washington, Ph.D., Tree Physiology and Soils, 1983
SUNY College of Environmental Science and Forestry, M.S., Silviculture, 1975
SUNY College of Environmental Science and Forestry, B.A., Forest Botany, 1973

Last updated June 10, 2026

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