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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=nrt_combined%3A%22Environment%20and%20People%21Urban%20natural%20resources%20management%22&f%5B0%5D=author_facet%3A%22Teclaw%2C%20Ronald%20M.%22&f%5B1%5D=author_facet%3A%22Schueneman%2C%20Gregory%22&f%5B2%5D=author_facet%3A%22Eggert%2C%20Sue%22&f%5B3%5D=author_facet%3A%22Harrington%2C%20Connie%22&f%5B4%5D=author_facet%3A%22Winandy%2C%20Jerrold%22&f%5B5%5D=author_facet%3A%22Schmitt%2C%20Craig%22&f%5B6%5D=author_facet%3A%22Schoettle%2C%20Anna%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

Interannual climatic variation mediates elevated CO₂ and O₃ effects on forest growth

We analyzed growth data from model aspen (Populus tremuloides Michx.) forest ecosystems grown in elevated atmospheric carbon dioxide ([CO₂]; 518?LL^-1) and ozone concentrations ([O₃]; 1.5 x background of 30-40 nL L^-1 during daylight hours) for 7 years using...

Author(s):

Mark E. Kubiske; Vanessa A. Quinn; Warren E. Heilman; Evan P. McDonald; Paula E. Marquardt; Ron M. Teclaw; Alexander L. Friend; David F. Karnosky

Year:

2006

Keywords:

air pollution, carbon dioxide, FACE, global change, ozone, Populus tremuloides, relative growth rate, trembling aspen

Source:

Global Change Biology

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