I'm currently exploring the responses of multiple species and multiple genotypes within species to their environment, which includes seed germination, flowering, and tree growth. I am also developing models that could be used to predict plant responses to the changing climate. In addition, I am studying the biology and silviculture of neglected species of hardwoods, cedars, and pine; a range of silvicultural techniques, such a variable density thinning; and factors, such as bole or root damage, that may affect tree survival and growth.
Understanding biological systems (within plants as well as within ecosystems) and using this information to inform management decisions. Long-term interest in roots and site productivity.
Models to predict spring budburst, management of Oregon white oak (threatened system), management of alder and poplar (biomass production), silviculture of cedars, western white pine, and true firs. Effects of variable density thinning on tree growth and understory response. Also, effects of practices on tree growth and short- and long-term site productivity.
Why This Research is Important
My research provides information to managers about species (and genotype) responses to environment and silvicultural practices through scientific publications describing the results from studies, general publications, and models to predict tree or stand responses. These models are important because it is not possible to collect information on the possible treatments or conditions that might occur on specific sites; thus, responses are modeled or predicted. The information I develop on Oregon white oak communities and package for small private landowners is important because most of the white oak is on private land, and there is a narrow biological time window to implement the treatments required for restoring these systems.
- 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
Featured Publications & Products
- Devine, Warren D.; Harrington, Constance A. 2010. Planting native oak in the Pacific Northwest.
- Comfort, Emily J.; Roberts, Scott D.; Harrington, Constance A. 2010. Midcanopy growth following thinning in young-growth conifer forests on the Olympic Peninsula, western Washington.
- Devine, Warren D.; Harrington, Constance A.; DeBell, Dean S. 2010. Intra-annual growth and mortality of four Populus clones in pure and mixed plantings.
- Devine, Warren D.; Harrington, Constance A.; Kraft, Joseph M. 2010. Acorn storage alternatives tested on Oregon white oak.
- Ares, Adrian; Harrington, Constance A; Terry, Thomas A.; Kraft, Joseph M. 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.
Publications & Products
- Devine, Warren D.; Footen, Paul W.; Harrison, Robert B.; Terry, Thomas A.; Harrington, Constance A.; Holub, Scott M.; Gould, Peter J. 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.
- Gould, Peter J.; Harrington, Connie. 2013. Making the little things count: modeling the development of understory trees in complex stands.
- Devine, Warren D.; Harrington, Constance A. 2013. Restoration release of overtopped Oregon white oak increases 10-year growth and acorn production.
- Gould, Peter J.; Harrington, Constance A.; St. Clair, J. Bradley. 2012. Growth phenology of coast Douglas-fir seed sources planted in diverse environments.
- O'Callaghan, Joan; Brodie, Leslie; Harrington, Constance; Gould, Peter; Devine, Warren. 2012. Remember redcedar! An overlooked species reveals its potential.
- Devine, Warren D.; Harrington, Constance. 2011. Factors affecting diurnal stem contraction in young Douglas-fir.
- Gould, Peter J.; Harrington, Constance A.; Devine, Warren D. 2011. Growth of Oregon white oak (Quercus garryana).
- Harrington, Constance A.; Devine, Warren D. 2011. Stand development following precommercial thinning and fertilization treatments in a western redcedar (Thuja plicata) dominated forest.
- Harrington, Timothy B., Ph.D..; Harrington, Constance A.; DeBell, Dean S. 2009. Effects of planting spacing and site quality on 25-year growth and mortality relationships of Douglas-fir (Pseudotsuga menziesii var menziesii)..
- Harrington, Constance A.; Schuette, William. 2009. Evaluating sites for planting hardwoods in the Pacific Northwest.
- Southworth, Dariene; Carrington, Elizabeth M.; Frank, Jonathan L.; Gould, Peter; Harrington, Connie A.; Devine, Warren D. 2009. Mycorrhizas on nursery and field seedlings of Quercus garryana.
- Devine, Warren D.; Harrington, Constance A. 2009. Relationships among foliar phenology, radial growth rate, and xylem density in a young Douglas-fir plantation.
- Gould, Peter J.; Harrington, Constance A. 2009. Root morphology and growth of bare-root seedlings of Oregon white oak.
- Peter, David H.; Harrington, Constance. 2009. Six years of plant community development after clearcut harvesting in western Washington.
- Peter, David H.; Harrington, Constance A. 2009. Synchronicity and geographic variation in Oregon white oak acorn production in the Pacific Northwest.
- Cline, Morris G.; Bhave, Neela; Harrington, Constance A. 2009. The possible roles of nutrient deprivation and auxin repression in apical control.
- Erickson, Heather E.; Harrington, Constance A.; Marshall, David D. 2009. Tree growth at stand and individual scales in two dual-species mixture experiments in southern Washington State, USA.
- Devine, Warren D.; Harrington, Constance A.; Peter, David H. 2007. Oak woodland restoration: understory response to removal of encroaching conifers..
- Harrington, Constance A.; Kern, Christel C. 2002. Will Garry oak respond to release from overtopping conifers.
|Oregon white oak regeneration enhanced through proper seed and seedling management|
Planting Native Oak in the Pacific Northwest is the first comprehensive study of Oregon white oak planting technique. Without post-planting man ...
|Tree Adaptation to Future Climates Involves Multiple Aspects|
Genetic variation in growth phenology is a potentially important resource for mitigating some of the effects of climate change. Variation in dia ...