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Growth phenology of coast Douglas-fir seed sources planted in diverse environments

The timing of periodic life cycle events in plants (phenology) is an important factor determining how species and populations will react to climate change. We evaluated annual patterns of basal-area and height growth of coast Douglas-fir (Pseudotusuga menziesii var. menziesii (Mirb.) Franco) seedlings from four seed sources...

https://www.fs.usda.gov/treesearch/search?keywords=%22Growth%22&%3Bf%5B0%5D=author_facet%3A%22Herbert%2C%20Nancy%22&f%5B0%5D=author_facet%3A%22Dykstra%2C%20Dennis%22&f%5B1%5D=author_facet%3A%22Gu%2C%20Hongmei%22&f%5B2%5D=author_facet%3A%22Coulston%2C%20John%22&f%5B3%5D=author_facet%3A%22Harrington%2C%20Connie%22&f%5B4%5D=author_facet%3A%22Illman%2C%20Barbara%22&f%5B5%5D=author_facet%3A%22Katzner%2C%20Todd%22&f%5B6%5D=author_facet%3A%22Li%2C%20Harbin%22

Author(s):

Peter J. Gould; Constance A. Harrington; J. Bradley St. Clair

Year:

2012

Keywords:

adaptation, assisted migration, budburst, cambium, dormancy, genecology

Source:

Tree Physiology. 32: 1482-1496

Growth of Oregon white oak (Quercus garryana)

Many land managers are interested in maintaining or restoring plant communities that contain Oregon white oak (OWO, Quercus garryana), yet there is relatively little information available about the species' growth rates and survival to guide management decisions. We used two studies to characterize growth (over multi-year periods and within...

Author(s):

Peter J. Gould; Constance A. Harrington; Warren D. Devine

Year:

2011

Keywords:

Forest Vegetation Simulator, forest models, Garry Oak, Pacific Northwest, prairie, restoration

Source:

Northwest Science. 85(2): 159-171

Will changes in phenology track climate change? A study of growth initiation timing in coast Douglas-fir

Under climate change, the reduction of frost risk, onset of warm temperatures and depletion of soil moisture are all likely to occur earlier in the year in many temperate regions. The resilience of tree species will depend on their ability to track these changes in climate with shifts in phenology that lead to earlier growth initiation in the spring. Exposure to warm...

Author(s):

Kevin Ford; Connie Harrington; Sheel Bansal; Peter J. Gould; Brad St. Clair

Year:

2016

Keywords:

bud break, budburst, cambial reactivation, climate change, dormancy, flushing, leaf-out, parallel model, phenology, Pseudotsuga menziesii var. menziesii

Source:

Global Change Biology

Relationships among foliar phenology, radial growth rate, and xylem density in a young Douglas-fir plantation

We related intraannual patterns in radial growth rate and xylem density to foliar phenology and second growth flushes in a young Douglas-fir plantation in western Washington. Three foliar maturity classes were defined: (1) shoots and needles elongating; (2) elongation complete, needles maturing; and (3) needles mature. Diameter growth rate had two peaks, one about the...

Author(s):

Warren D. Devine; Constance A. Harrington

Year:

2009

Keywords:

phenology, foliage, xylem density, radial growth, second flushing, Douglas-fir, soil water, vegetation control

Source:

Wood and Fiber Science

Midcanopy growth following thinning in young-growth conifer forests on the Olympic Peninsula, western Washington

Midcanopy layers are essential structures in "old-growth" forests on the Olympic Peninsula. Little is known about which stand and tree factors influence the ability of midcanopy trees in young-growth forests to respond to release; however, this information is important to managers interested in accelerating development of late-successional structural...

Author(s):

Emily J. Comfort; Scott D. Roberts; Constance A. Harrington

Year:

2010

Keywords:

midcanopy, variable-density thinning, late-successional conditions, western redcedar, western hemlock

Source:

Forest Ecology and Management. 259: 1606-1614

Making the little things count: modeling the development of understory trees in complex stands

Forest growth models are useful for asking ?What if?? questions when evaluating silvicultural treatments intended to increase the complexity of future stands. What if we thinned to level A or B? How would it aff ect the growth rates of understory trees? How many trees would survive? To answer these types of questions, a growth model needs to...

Author(s):

Peter J. Gould; Connie Harrington

Year:

2013

Keywords:

Growth and yield models, Forest Vegetation Simulator, thinning, competition, underplanting, regeneration.

Source:

In: Anderson, P.D.; Ronnenberg, K.L., eds. Density management in the 21st century: west side story. Gen. Tech. Rep. PNW-GTR-880. Portland, OR: US Department of Agriculture, Forest Service, Pacific Northwest Research Station: 59–70.

Root morphology and growth of bare-root seedlings of Oregon white oak

Root morphology and stem size were evaluated as predictors of height and basal-area growth (measured at groundline) of 1-1 Oregon white oak (Quercus garryana Dougl. ex Hook.) seedlings planted in raised beds with or without an additional irrigation treatment. Seedlings were classified into three root classes based on a visual assessment of the...

Author(s):

Peter J. Gould; Constance A. Harrington

Year:

2009

Keywords:

Garry oak, artificial regeneration, restoration, Pacific Northwest

Source:

Tree Planters' Notes. 53(2): 22-28

Intra-annual growth and mortality of four Populus clones in pure and mixed plantings

Intra-annual growth rates were assessed during 3 years for four Populus clones grown in pure and mixed clonal stands at square spacings of 0.5, 1.0, and 1.5 m in western Washington, USA. Height growth rate peaked in August, except at the 0.5-m spacing where it peaked in July and June in years 2 and 3, respectively. Diameter growth rate generally...

Author(s):

Warren D. Devine; Constance A. Harrington; Dean S. DeBell

Year:

2010

Keywords:

Populus, biomass, short-rotation, clonal plantation

Source:

New Forests. 39: 287-299

Phenology of Pacific Northwest tree species

Phenology is the study of the timing of recurring biological events. For foresters, the most commonly observed phenological events are budburst, flowering, and leaf fall, but other harder to observe events, such as diameter-growth initiation, are also important. Most events that occur in the spring are influenced by past exposure to cool (chilling) temperatures and...

Author(s):

Connie Harrington; Kevin Ford; Brad St. Clair

Year:

2016

Keywords:

Source:

Tree Planters' Notes. 59(2): 76-85.

Tree growth at stand and individual scales in two dual-species mixture experiments in southern Washington State, USA

Planting with mixtures of tree species rather...

Author(s):

Heather E. Erickson; Constance A. Harrington; David D. Marshall

Year:

2009

Keywords:

stand yield, species mixtures, forest monocultures, competitive interactions

Source:

Canadian Journal of Forest Research

Restoration release of overtopped Oregon white oak increases 10-year growth and acorn production

In the Willamette Valley-Puget Trough-Georgia Basin ecoregion of the North American Pacific Northwest, there has been widespread encroachment of Douglas-fir (Pseudotsuga menziesii) upon Oregon white oak (Quercus garryana) savanna and woodland stands that were historically maintained by frequent anthropogenic fire. Restoration...

Author(s):

Warren D. Devine; Constance A. Harrington

Year:

2013

Keywords:

Oregon white oak, Quercus garryana, restoration, release, acorn production, suppression

Source:

Forest Ecology and Management. 291: 87-95

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

The phenology of diameter-growth cessation in trees will likely play a key role in mediating species and ecosystem responses to climate change. A common expectation is that warming will delay cessation, but the environmental and genetic influences on this process are poorly understood. We modeled the effects of temperature, photoperiod, and seed-source climate on...

Author(s):

Kevin R. Ford; Constance A. Harrington; J. Bradley St. Clair

Year:

2017

Keywords:

Cambial growth, climate change, day length, diameter growth, genecology, phenology, Pseudotsuga menziesii var. menziesii, secondary growth

Source:

Global Change Biology. 23(8): 3348-3362.

Done for the season: How do Douglas-fir know when to stop growing?

Diameter growth is seasonal in Douglasfir, the evergreen tree found in much of western Washington, Oregon, and northern California. Initiation and cessation of diameter growth are both triggered by environmental cues. The tree responds to these cues to improve its chances of growing under favorable conditions. As environmental conditions change, however, land managers...

Author(s):

Rhonda Mazza; Connie Harrington; Brad St. Clair; Kevin Ford

Year:

2018

Keywords:

Douglas-fir, climate change, cambial growth, diameter growth, day length.

Source:

Science Findings 210. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 5 p.

Survival, and growth response of Douglas-fir trees to increasing levels of bole, root, and crown damage

We applied a range of bole and root damage treatments to young Douglas-fir (Pseudotsuga menziesii [Mirb.] Franco) trees. Significant natural damage occurred to tree crowns over the course of the 10-year study allowing for an analysis of how damage severity to tree boles, tree roots, and tree tops impacts growth and cumulative survival of trees....

Author(s):

Dryw Jones; Constance Harrington; David Marshall

Year:

2018

Keywords:

Douglas-fir growth, Douglas-fir survival, bole damage, crown damage, root damage.

Source:

Forest Science. 65(2): 143-155.

Response of young red alder to pruning

Red alder (Alnus rubra, Bong.) is the most common hardwood in Washington, Oregon and British Columbia. It is used for a variety of products including firewood, pulp, and solid wood products such as furniture, cabinets and musical instruments. Pruning may be a viable management technique for increasing clear wood and, thus, value in managed stands...

Author(s):

Leslie C. Brodie; Constance A. Harrington

Year:

2006

Keywords:

Red alder, Alnus rubra, pruning, branch occlusion, silviculture.

Source:

In: Deal, Robert L.; Harrington, Constance A., eds. Red alder: A state of knowledge. Gen. Tech. Rep. PNW-GTR-669. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 95-102.

Factors influencing growth and flowering of understory plants in conifer stands in Western Washington

Managing forest stands to produce wood while also producing other values, such as wildlife habitat, recreation, or special forest products, requires information on forest components not always measured in traditional silviculture studies. For example, some managers may want to predict potential growth rates of herbs, shrubs, and trees in the understory?as these...

Author(s):

Constance A. Harrington; Karl R. Buermeyer; Leslie C. Brodie; Bryan W. Wender

Year:

2002

Keywords:

Plant ecology, silviculture, flowering, shrubs, understory, tree growth.

Source:

In: Johnson, Adelaide C.; Haynes, Richard W.; Monserud, Robert A., eds. Congruent management of multiple resources: proceedings from the Wood Compatibility Initiative workshop. Gen. Tech. Rep. PNW-GTR-563. Portland, OR: U.S. Department of Agriculture, Forest Service, Pacific Northwest Research Station. 159-168.

Variable density thinning promotes variable structural responses 14 years after treatment in the Pacific Northwest

Young stands are commonly assumed to require centuries to develop into late-successional forest habitat. This viewpoint reflects the fact that young stands often lack many of the structural features that define late-successional habitat, and that these features derive from complex stand dynamics that are difficult to mimic with forest management. Variable density...

Author(s):

John L. Willis; Scott D. Roberts; Constance A. Harrington

Year:

2018

Keywords:

Thinning, growth, crown, restoration, late-successional.

Source:

Forest Ecology and Management. 410: 114-125.

Effects of planting spacing and site quality on 25-year growth and mortality relationships of Douglas-fir (Pseudotsuga menziesii var menziesii).

Author(s):

Timothy B. Harrington; Constance A. Harrington; Dean S. DeBell

Year:

2009

Keywords:

stand density, competition, crown ratio, plantation

Source:

Forest Ecology and Management DOI: 10.1016/j.foreco.2009.03.039

Phenological responses of juvenile pecan and white oak on an upland site

Pecan (Carya illinoiensis) and white oak (Quercus alba) produce multiple products and wildlife values, but their phenological responses to N fertilization have not been well characterized. We compared tree growth at planting and for six consecutive growing seasons during establishment (2003?2008, Test 1), and determined if...

Author(s):

D. M. Burner; D. K. Brauer; J. L. Snider; C. A. Harrington; P. A. Moore

Year:

2014

Keywords:

Budburst, , Carya illinoiensis, , growth, , Leaf senescence, Nitrogen fertilization, , Quercus alba.

Source:

Agroforestry Systems. 88(1): 141-155.

Oak woodland restoration: understory response to removal of encroaching conifers.

Oregon white oak (or Garry oak, Quercus garryana) woodlands and savannas of the coastal Pacific Northwest are legacies of an anthropogenic fire regime that ended with European settlement in the mid-1800s. Historically, these oak stands had a sparse overstory and an understory dominated by fire-tolerant grasses and forbs. Post-settlement fire...

Author(s):

Warren D. Devine; Constance A. Harrington; David H. Peter

Year:

2007

Keywords:

Douglas-fir (Pseudotsuga menziesii), microclimate, Oregon white oak (Quercus garryana), restoration, savanna, understory.

Source:

Ecological Restoration. 25(4): 247-255.

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Total Publications in Treesearch: 53,214

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Growth phenology of coast Douglas-fir seed sources planted in diverse environments

Growth of Oregon white oak (Quercus garryana)

Will changes in phenology track climate change? A study of growth initiation timing in coast Douglas-fir

Relationships among foliar phenology, radial growth rate, and xylem density in a young Douglas-fir plantation

Midcanopy growth following thinning in young-growth conifer forests on the Olympic Peninsula, western Washington

Making the little things count: modeling the development of understory trees in complex stands

Root morphology and growth of bare-root seedlings of Oregon white oak

Intra-annual growth and mortality of four Populus clones in pure and mixed plantings

Phenology of Pacific Northwest tree species

Tree growth at stand and individual scales in two dual-species mixture experiments in southern Washington State, USA

Restoration release of overtopped Oregon white oak increases 10-year growth and acorn production

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

Done for the season: How do Douglas-fir know when to stop growing?

Survival, and growth response of Douglas-fir trees to increasing levels of bole, root, and crown damage

Response of young red alder to pruning

Factors influencing growth and flowering of understory plants in conifer stands in Western Washington

Variable density thinning promotes variable structural responses 14 years after treatment in the Pacific Northwest

Effects of planting spacing and site quality on 25-year growth and mortality relationships of Douglas-fir (Pseudotsuga menziesii var menziesii).

Phenological responses of juvenile pecan and white oak on an upland site

Oak woodland restoration: understory response to removal of encroaching conifers.

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