Brad St. Clair, PhD
Former Employee
Research Geneticist
Treesearch Publications
- Pooja Singh, Brad St. Clair, Brandon M. Lind, Richard Cronn, Nicholas P. Wilhelmi, Nicolas Feau, Mengmeng Lu, Dragana Obreht Vidakovic, Richard C. Hamelin, David C. Shaw, Sally N. Aitken, Sam Yeaman. 2024. Genetic architecture of disease resistance and tolerance in Douglas‐fir trees
- Claire Ellwanger, Brad St. Clair, Andy Bower, Vicky Erickson, Matt Horning, Scott Kolpak. 2022. A proposed protocol for prioritizing national forest seedlots for reforestation and restoration given concerns of climate change
- Dryw Jones, Connie Harrington, Brad St. Clair. 2022. Influence of climate on annual changes in Douglas-fir stem taper
- John Kirkland, Brad St. Clair. 2021. The 1912 Douglas-fir Heredity Study: Lessons from a century of experience
- Sukhyun Joo, Douglas A. Maguire, Keith J.S. Jayawickrama, Terrance Z. Ye, Brad St. Clair. 2020. Estimation of yield gains at rotation-age from genetic tree improvement in coast Douglas-fir
- Brian Cooke, Bryce A. Richardson, Francis F. Kilkenny, Brad St. Clair, Deborah M. Finch, Holly R. Prendeville. 2019. Getting climate-smart with seeds: How a new software tool helps prepare landscapes for expected future conditions
- Brad St. Clair, Glenn Howe, Jennifer G. Kling. 2019. The 1912 Douglas-Fir heredity study: Long-term effects of climatic transfer distance on growth and survival
- Owen W. Baughman, Alison C. Agneray, Matthew L. Forister, Francis F. Kilkenny, Erin K. Espeland, Rob Fiegener, Matthew E. Horning, Richard C. Johnson, Thomas N. Kaye, Jeffrey E. Ott, Brad St. Clair, Elizabeth A. Leger. 2019. Strong patterns of intraspecific variation and local adaptation in Great Basin plants revealed through a review of 75 years of experiments
- Josh McDaniel, Janet S. Prevey, Connie Harrington, Brad St. Clair. 2019. Nature and Nurture: Genetics and Climate Influence the Timing of Flowering in Trees
- Rhonda Mazza, Connie Harrington, Brad St. Clair, Kevin Ford. 2018. Done for the season: How do Douglas-fir know when to stop growing?
- Carl Vangestel, Andrew J. Eckert, Jill L. Wegrzyn, Brad St. Clair, David B. Neale. 2018. Linking phenotype, genotype and environment to unravel genetic components underlying cold hardiness in coastal Douglas-fir (Pseudotsuga menziesii var. menziesii)
- Dante Castellanos-Acuña, Kenneth W. Vance-Borland, Brad St. Clair, Andreas Hamann, Javier López-Upton, Erika Gómez-Pineda, Juan Manuel Ortega-Rodríguez, Cuauhtémoc Sáenz-Romero. 2018. Climate-based seed zones for Mexico: guiding reforestation under observed and projected climate change
- 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
- Richard Cronn, Peter C. Dolan, Sanjuro Jogdeo, Jill L. Wegrzyn, David B. Neale, Brad St. Clair, Dee R. Denver. 2017. Transcription through the eye of a needle: daily and annual cyclic gene expression variation in Douglas-fir needles
- 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
- Aline Frank, Glenn T. Howe, Christoph Sperisen, Peter Brang, Brad St. Clair, Dirk R. Schmatz, Caroline Heiri. 2017. Risk of genetic maladaptation due to climate change in three major European tree species
- Brad St. Clair, Andy Bower, Vicky Erickson, Glenn Howe. 2017. Prioritization of gene conservation activities in the face of changing climates
- Brad St. Clair, Glenn Howe. 2017. Building on a century of forest genetics research
- 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
- Aline Frank, Christoph Sperisen, Glenn Thomas Howe, Peter Brang, Lorenz Walthert, Brad St. Clair, Caroline Heiri. 2017. Distinct genecological patterns in seedlings of Norway spruce and silver fir from a mountainous landscape
- Cuauhtémoc Sáenz-Romero, Roberto A. Lindig-Cisneros, Dennis G. Joyce, Jean Beaulieu, Brad St. Clair, Barry C. Jaquish. 2016. Assisted migration of forest populations for adapting trees to climate change
- 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
- David Boshier, Linda Broadhurst, Jonathan Cornelius, Leonardo Gallo, Jarkko Koskela, Judy Loo, Gillian Petrokofsky, Brad St. Clair. 2015. Is local best? Examining the evidence for local adaptation in trees and its scale
- Kas Dumroese, Mary I. Williams, John A. Stanturf, Brad St. Clair. 2015. Considerations for restoring temperate forests of tomorrow: Forest restoration, assisted migration, and bioengineering
- Geoff Koch, Brad St. Clair, Vicky Erickson. 2015. No place like home: using seed zones to improve restoration of native grasses in the West
- Gerald Rehfeldt, Barry C. Jaquish, Javier Lopez-Upton, Cuauhtemoc Saenz-Romero, Brad St. Clair, Laura P. Leites, Dennis G. Joyce. 2014. Comparative genetic responses to climate for the varieties of Pinus ponderosa and Pseudotsuga menziesii: realized climate niches
- Gerald Rehfeldt, Laura P. Leites, Brad St. Clair, Barry C. Jaquish, Cuauhtemoc Saenz-Romero, Javier Lopez-Upton, Dennis G. Joyce. 2014. Comparative genetic responses to climate in the varieties of Pinus ponderosa and Pseudotsuga menziesii: clines in growth potential
- Gerald Rehfeldt, Barry C. Jaquish, Cuauhtemoc Saenz-Romero, Dennis G. Joyce, Laura P. Leites, Brad St. Clair, Javier Lopez-Upton. 2014. Comparative genetic responses to climate in the varieties of Pinus ponderosa and Pseudotsuga menziesii: reforestation
- Andrew D. Bower, Brad St. Clair, Vicky Erickson. 2014. Generalized provisional seed zones for native plants
- Francis F. Kilkenny, Brad St. Clair, Matt Horning. 2013. Climate change and the future of seed zones
- Brad St. Clair, Francis F. Kilkenny, Richard C. Johnson, Nancy L. Shaw, George Weaver. 2013. Genetic variation in adaptive traits and seed transfer zones for Pseudoroegneria spicata (bluebunch wheatgrass) in the northwestern United States
- Elizabeth A. Gerson, Rick G. Kelsey, Brad St. Clair. 2012. Genetic variation of piperidine alkaloids in Pinus ponderosa from a common garden
- Peter J. Gould, Connie Harrington, Brad St. Clair. 2012. Growth phenology of coast Douglas-fir seed sources planted in diverse environments
- Brad St. Clair, Glenn Thomas Howe. 2011. Strategies for conserving forest genetic resources in the face of climate change
- Noreen Parks, Connie Harrington, Brad St. Clair, Peter. Gould. 2010. The future of spring bud burst: looking at the possibilities
- R.C. Johnson, Vicky J. Erickson, Nancy L. Mandel, Brad St. Clair, Kenneth W. Vance-Borland. 2010. Mapping genetic variation and seed zones for Bromus carinatus in the Blue Mountains of eastern Oregon, USA
- Brad St. Clair, Glenn Howe. 2010. Ensuring that forests are adapted to future climates
- Terrence Z. Ye, Keith J.S. Jayawickrama, Brad St. Clair. 2010. Realized gains from block-plot coastal Douglas-fir trials in the northern Oregon Cascades
- Connie Harrington, Peter Gould, Brad St. Clair. 2010. Modeling the effects of winter environment on dormancy release of Douglas-fir
- Konstantin V. Krutovsky, Brad St. Clair, Robert Saich, Valerie Hipkins, David B. Neale. 2009. Estimation of population structure in coastal Douglas-fir [Pseudotsuga menziesii (Mirb.) Franco var. menziesii] using allozyme and microsatellite markers
- Brad St. Clair, Glenn Howe. 2009. Genetic options for adapting forests to climate change
- Brad St. Clair, Glenn T. Howe. 2007. Genetic maladaptation of coastal Douglas-fir seedlings to future climates
Data and Tools
- Oregon State University, Ph.D., Forest Genetics, 1989
- University of Wisconsin, M.S., Forest Genetics, 1984
- University of California Berkeley, B.S., Forestry, 1980
Last updated March 10, 2026