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Disturbance, tree mortality, and implications for contemporary regional forest change in the Pacific Northwest

Creator:: Reilly, Matthew J. and Spies, Thomas A.
Abstract:: Tree mortality is an important demographic process and primary driver of forest dynamics, yet there are relatively few plot-based studies that explicitly quantify mortality and compare the relative contribution of endogenous and exogenous disturbances at regional scales. We used repeated observations on 289,390 trees in 3673 1 ha plots on...
Resource Type:: Article
Full Text:: @oregonstate.edu (M.J. Reilly). Matthew J. Reilly a,⇑, Thomas A. Spies b aDepartment of Forest Ecosystems and

Stand development, fire and growth of old-growth and young forests in southwestern Oregon, USA

Creator:: Sensenig, Thomas, Bailey, John D., and Tappeiner, John C.
Abstract:: We studied stand development in three distinct forest types in southwestern Oregon using six stands each in uncut and clear-felled old-growth stands and nearby young stands (18 total). Old-growth stands showed a wide range of tree ages (>300 years) and low tree densities for several centuries; rapid early growth produced...
Resource Type:: Article
Full Text:: southwestern Oregon, USA Thomas Sensenig a, John D. Bailey b,⇑, John C. Tappeiner b aUSDA Forest Service

Initial experimental effects of intensive forest management on avian abundance

Creator:: Betts, Matthew G., Verschuyl, Jake, Giovanini, Jack, Stokely, Thomas D., and Kroll, Andrew J.
Abstract:: Components of biodiversity in intensively managed forest stands may be reduced in comparison to naturally regenerated stands. Use of herbicides to suppress herbaceous and woody plant species that compete with planted seedlings has been implicated in negative impacts. We designed a large-scale experimental study to test the influence of intensive...
Resource Type:: Article
Full Text:: Operations Research, Weyerhaeuser NR, Federal Way, Washington, United States of America Thomas Stokely

Tree mortality based fire severity classification for forest inventories: A Pacific Northwest national forests example

Creator:: Whittier, Thomas R. and Gray, Andrew N.
Abstract:: Determining how the frequency, severity, and extent of forest fires are changing in response to changes in management and climate is a key concern in many regions where fire is an important natural disturbance. In the USA the only national-scale fire severity classification uses satellite image change-detection to produce maps...
Resource Type:: Article
Full Text:: Retired. Thomas R. Whittier a,1, Andrew N. Gray b,⇑ aDepartment of Forest Ecosystems and Society, Oregon

Canopy gaps affect long-term patterns of tree growth and mortality in mature and old-growth forests in the Pacific Northwest

Creator:: Gray, Andrew N., Spies, Thomas A., and Pabst, Robert J.
Abstract:: Canopy gaps created by tree mortality can affect the speed and trajectory of vegetation growth, species’ population dynamics, and spatial heterogeneity in mature forests. Most studies focus on plant development within gaps, yet gaps also affect the mortality and growth of surrounding trees, which influence shading and root encroachment into...
Resource Type:: Article
Full Text:: . Gray a,⇑, Thomas A. Spies a, Robert J. Pabst b aUSDA Forest Service Pacific Northwest Research Station

Comparison of uncertainty in per unit area estimates of aboveground biomass for two selected model sets

Creator:: Shettles, Michael, Temesgen, H., Gray, Andrew N., and Hilker, Thomas
Abstract:: Uncertainty in above ground forest biomass (AGB) estimates at broad-scale depends primarily on three sources of error that interact and propagate: measurement error, model error, and sampling error. Using Monte Carlo simulations, we compare the total propagated error for two sets of regional-level component equations for lodgepole pine AGB, and...
Resource Type:: Article
Full Text:: Shettles a, H. Temesgen a,⇑, Andrew N. Gray b, Thomas Hilker a aDepartment of Forest Engineering, Resources

A comparison of selected parametric and imputation methods for estimating snag density and snag quality attributes

Creator:: Eskelson, B. N. I., Temesgen, Hailemariam, and Hagar, J. C.
Abstract:: Snags (standing dead trees) are an essential structural component of forests. Because wildlife use of snags depends on size and decay stage, snag density estimation without any information about snag quality attributes is of little value for wildlife management decision makers. Little work has been done to develop models that...
Resource Type:: Article
Full Text:: estimating snag density and snag quality attributes B.N.I. Eskelson a,⇑, H. Temesgen a,1, J.C. Hagar b,2

A comparison of selected parametric and imputation methods for estimating snag density and snag quality attributes

Creator:: Eskelson, B. N. I., Temesgen, H., and Hagar, J. C.
Abstract:: Snags (standing dead trees) are an essential structural component of forests. Because wildlife use of snags depends on size and decay stage, snag density estimation without any information about snag quality attributes is of little value for wildlife management decision makers. Little work has been done to develop models that...
Resource Type:: Article
Full Text:: estimating snag density and snag quality attributes B.N.I. Eskelson a,⇑, H. Temesgen a,1, J.C. Hagar b,2

A comparison of selected parametric and imputation methods for estimating snag density and snag quality attributes

Creator:: Eskelson, B. N. I., Temesgen, H., and Hagar, J. C.
Abstract:: Snags (standing dead trees) are an essential structural component of forests. Because wildlife use of snags depends on size and decay stage, snag density estimation without any information about snag quality attributes is of little value for wildlife management decision makers. Little work has been done to develop models that...
Resource Type:: Article
Full Text:: estimating snag density and snag quality attributes B.N.I. Eskelson a,⇑, H. Temesgen a,1, J.C. Hagar b,2

Resilience in Quaking Aspen: Recent advances and future needs

Creator:: Rogers, Paul C., Eisenberg, Cristina, and St. Clair, Samuel B.
Abstract:: Quaking aspen (Populus tremuloides) sustainability is a topic of intense interest in forest ecology. Reports range from declines to persisting or increasing coverage in some areas. Moreover, there is little agreement on ultimate factors driving changes. Low aspen recruitment has been attributed to climate patterns, past management, herbivore increases, competitive...
Resource Type:: Article
Full Text:: :1603-1614. 383 Landres, P. B., P. Morgan, and F. J. Swanson. 1999. Overview of the use of natural

ScholarsArchive@OSU

Disturbance, tree mortality, and implications for contemporary regional forest change in the Pacific Northwest

Stand development, fire and growth of old-growth and young forests in southwestern Oregon, USA

Initial experimental effects of intensive forest management on avian abundance

Tree mortality based fire severity classification for forest inventories: A Pacific Northwest national forests example

Canopy gaps affect long-term patterns of tree growth and mortality in mature and old-growth forests in the Pacific Northwest

Comparison of uncertainty in per unit area estimates of aboveground biomass for two selected model sets

A comparison of selected parametric and imputation methods for estimating snag density and snag quality attributes

A comparison of selected parametric and imputation methods for estimating snag density and snag quality attributes

A comparison of selected parametric and imputation methods for estimating snag density and snag quality attributes

Resilience in Quaking Aspen: Recent advances and future needs

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