Index Catalog // ScholarsArchive@OSU

Accuracy and suitability of selected sampling methods within conifer dominated riparian zones

Creator:: Marquardt, Theresa, Temesgen, Hailemariam, and Anderson, Paul D.
Abstract:: Sixteen sampling alternatives were examined for their performance to quantify selected attributes of overstory conifers in riparian areas of western Oregon. Each alternative was examined at eight headwater forest locations based on a 0.52 ha square stem maps. The alternatives were evaluated for selected stand attributes (trees per hectare, basal...
Resource Type:: Article
Full Text:: and Watershed Management Program, USDA Forest Service, Pacific Northwest Research Station, 3200 SW

Thinning of young Douglas-fir forests decreases density of northern flying squirrels in the Oregon Cascades

Creator:: Manning, Tom, Hagar, Joan C., and McComb, Brenda C.
Abstract:: Large-scale commercial thinning of young forests in the Pacific Northwest is currently promoted on public lands to accelerate the development of late-seral forest structure for the benefit of wildlife species such as northern spotted owls (Strix occidentalis caurina) and their prey, including the northern flying squirrel (Glaucomys sabrinus). Attempts to...
Resource Type:: Article
Full Text:: Description 121 6 The YSTDS comprises a randomized block design with 16 forest stands located on the

Bayesian models describing microhabitat associations of infrequently captured small mammals sampled under a complex hierarchical design

Creator:: Lam, Tzeng Yih and Maguire, Douglas A.
Abstract:: Knowledge about the relationship between habitat structure and abundance of a target species facilitates biodiversity conservation in managed forests. However, modeling the relationship for infrequent small mammal species in silvicultural experiments introduces the challenge of excessive zero counts and complex hierarchical sampling. A common solution has been to ignore infrequent...
Resource Type:: Article
Full Text:: from two stacked No. 10 cans and operated as a death 121 Bayesian models describing microhabitat

Dynamics of coarse woody debris following wildfire in a mountain hemlock (Tsuga mertensiana) forest

Creator:: Acker, Steven A., Kertis, Jane, Bruner, Howard, O’Connell, Kari, and Sexton, Jay
Abstract:: Coarse woody debris (CWD, comprised of snags and downed logs) is an important component of the structure and function of forest ecosystems, one which both influences the availability of fuel for wildfires and can be a result of wildfires. We studied snag persistence, and changes in mass of CWD in...
Resource Type:: Article
Full Text:: the crest of the Cascade Range in central Ore- gon, at approximately 43�460 north latitude and 121�590

Initial response of a mixed-conifer understory plant commnity to burning and thinning restoration treatments

Creator:: Wayman, Rebecca Bewley and North, Malcolm
Abstract:: Mechanical thinning and prescribed fire are widely used to restore western forests after a century of fire suppression, yet we know little about how these treatments affect understory communities where plant diversity is highest. We followed understory plants and environmental factors in old-growth, Sierran mixed conifer for two pre-treatment and...
Resource Type:: Article
Full Text:: these changes. Using a surveyor’s total station, nine permanent gridpoints were mapped and marked on a

Initial response of a mixed-conifer understory plant community to burning and thinning restoration treatments

Creator:: Wayman, Rebecca Bewley and North, Malcolm
Abstract:: Mechanical thinning and prescribed ﬁre are widely used to restore western forests after a century of ﬁre suppression, yet we know little about how these treatments affect understory communities where plant diversity is highest. We followed understory plants and environmental factors in old-growth, Sierran mixed conifer for two pre-treatment and...
Resource Type:: Article
Full Text:: these changes. Using a surveyor’s total station, nine permanent gridpoints were mapped and marked on a

Initial response of a mixed-conifer understory plant community to burning and thinning restoration treatments

Creator:: Wayman, Rebecca B. and North, Malcolm
Abstract:: Mechanical thinning and prescribed fire are widely used to restore western forests after a century of fire suppression, yet we know little about how these treatments affect understory communities where plant diversity is highest. We followed understory plants and environmental factors in old-growth, Sierran mixed conifer for two pre-treatment and...
Resource Type:: Article
Full Text:: these changes. Using a surveyor’s total station, nine permanent gridpoints were mapped and marked on a

Effects of ungulate herbivory on aspen, cottonwood, and willow development under forest fuels treatment regimes

Creator:: Endress, Bryan A., Wisdom, Michael J., Vavra, Martin, Parks, Catherine G., Dick, Brian L., Naylor, Bridgett J., and Boyd, Jennifer M.
Abstract:: Herbivory by domestic and wild ungulates can dramatically affect vegetation structure, composition and dynamics in nearly every terrestrial ecosystem of the world. These effects are of particular concern in forests of western North America, where intensive herbivory by native and domestic ungulates has the potential to substantially reduce or eliminate...
Resource Type:: Article
Full Text:: Service, Pacific Northwest Research Station, 1401 Gekeler Lane, La Grande, OR 97850, USA a r t i c l e i n

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:: Analysis and Inventory Branch, USDA, Pacific Research Station, Corvallis, OR, USA a r t i c l e i n f o a

Post-fire logging produces minimal persistent impacts on understory vegetation in northeastern Oregon, USA

Creator:: Peterson, David W. and Dodson, Erich Kyle
Abstract:: Post-fire forest management commonly requires accepting some negative ecological impacts from management activities in order to achieve management objectives. Managers need to know, however, whether ecological impacts from post-fire management activities are transient or cause long-term ecosystem degradation. We studied the long-term response of understory vegetation to two post-fire logging...
Resource Type:: Article
Full Text:: : USDA Forest Service, Rocky Mountain Research Station, Interior West Forest Inventory and Analysis, 507

ScholarsArchive@OSU

Accuracy and suitability of selected sampling methods within conifer dominated riparian zones

Thinning of young Douglas-fir forests decreases density of northern flying squirrels in the Oregon Cascades

Bayesian models describing microhabitat associations of infrequently captured small mammals sampled under a complex hierarchical design

Dynamics of coarse woody debris following wildfire in a mountain hemlock (Tsuga mertensiana) forest

Initial response of a mixed-conifer understory plant commnity to burning and thinning restoration treatments

Initial response of a mixed-conifer understory plant community to burning and thinning restoration treatments

Initial response of a mixed-conifer understory plant community to burning and thinning restoration treatments

Effects of ungulate herbivory on aspen, cottonwood, and willow development under forest fuels treatment regimes

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

Post-fire logging produces minimal persistent impacts on understory vegetation in northeastern Oregon, USA

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