Index Catalog // ScholarsArchive@OSU

Exploration of statistical methods for synthesizing the effects of variable-retention harvesting on multiple taxa

Creator:: Lam, Tzeng Yih
Abstract:: Variable-retention harvesting was proposed to reduce loss of biodiversity and ecosystem processes associated with late-seral Douglas-fir (Pseudotsuga menziesii) forests in the Pacific Northwest. The Demonstration of Ecosystem Management Options experiment was established to test this hypothesis. Analysis presents various challenges to drawing statistical inferences about treatment effects. This dissertation explored...
Resource Type:: Dissertation
Full Text:: University of Washington, Oregon State University, University of Oregon, Gifford Pinchot and Umpqua

Stocking and growth of noble fir in the Cascade Mountains of Oregon and Washington

Creator:: Thomas, Theodore Bruce
Abstract:: Stocking levels and height growth rates of noble fir and associated species were measured on 51 clearcut study areas within the Pacific silver fir zone of the Oregon and Washington Cascades. Clearcut study areas were approximately 20 years old and had either planted noble fir or natural regeneration of noble...
Resource Type:: Masters Thesis

Post-eruption species selection and planting trials for reforestation of sites near Mount St. Helens

Creator:: Logan, Sheila E.
Abstract:: The 1980 eruptions of Mount St. Helens damaged or destroyed vegetation on more than 66,100 hectares (270,000 acres) within the Gifford Pinchot National Forest. The effects of the eruption on planting sites and seedling performance were unknown. Regeneration of "cut over" lands near Mount St. Helens has historically been limited...
Resource Type:: Masters Thesis

Green-tree retention and ectomycorrhiza legacies : the spatial influences of retention trees on mycorrhiza community structure and diversity

Creator:: Stockdale, Christopher A.
Abstract:: These studies are part of the Demonstration of Ecosystem Management Options (DEMO) study, a program researching the effects of different levels and patterns of green-tree retention on ecological, economic, and social phenomena. We restricted our studies to the 15% basal area, evenly dispersed retention treatment. Our objectives were, first, to...
Resource Type:: Masters Thesis
Full Text:: Three sites (blocks) within the DEMO study were used: Hamilton Buttes (Gifford-Pinchot National Forest

The influence of canopy structure and epiphytes on the hydrology of Douglas-fir forests

Creator:: Pypker, Thomas G.
Abstract:: Canopy structure has a significant impact on the canopy hydrology of Douglas-fir forests in the Pacific Northwest (PNW). Whole canopy rainfall interception was measured for young Douglas-fir forest and compared to an old-growth Douglas-fir forest. The old-growth forest had significantly greater canopy water storage capacity (5) and direct throughfall fraction...
Resource Type:: Dissertation

Habitat relationships of small terrestrial vertebrates and invertebrates in managed forests in the southern Oregon Cascades

Creator:: McDade, Kirsten Ayn
Abstract:: Silviculture systems that involve commercial thinning may provide higher quality wildlife habitat than traditional clearcut systems, yet such systems have not been vigorously tested. This prospective study examined forest floor animal abundance and habitat relationships under three different silviculture conditions: clearcuts, commercial thins, and uncuts. Eighteen stands, six per treatment,...
Resource Type:: Masters Thesis
Full Text:: , Oregon State University, University of Oregon, Gifford Pinchot and Umpqua National Forests, and the

Effects of spatially dispersed green-tree retention on ectomycorrhiza diversity

Creator:: Kolaczkowski, Oralia
Abstract:: The Demonstration for Ecosystem Management Options (DEMO) study originated out of the changing management priorities associated with federal forest lands in the Pacific Northwest which included an objective to maintain mature and old-growth forest characteristics in managed stands. The DEMO project examines the effects that different levels and patterns of...
Resource Type:: Masters Thesis

Response of small mammal mycophagy to varying levels and patterns of green-tree retention in mature forests of western Oregon and Washington

Creator:: Jacobs, Katherine M.
Abstract:: The Demonstration of Ecosystem Management Options (DEMO) study is a large-scale, multi-year, interdisciplinary project examining the effects of various levels and patterns of green-tree retention on multiple forest features. Six retention levels and patterns were examined and replicated across six blocks of predominately Douglas-fir forested land in western Oregon and...
Resource Type:: Masters Thesis
Full Text:: , Gifford Pinchot and Umpqua National Forests, and the Washington State Department of Natural Resources

Carbon storage in a Pacific Northwest conifer forest ecosystem : a chronosequence approach

Creator:: Janisch, Jack E.
Abstract:: As concern over global warming intensifies, sequestration and storage of atmospheric CO2 has become an important scientific and policy issue. Confusion persists, however, over interpretation of forest carbon (C) source-sink dynamics, in part because conclusions drawn depend on temporal and spatial scales of analysis (e.g. day-week scale vs. successional-scale), type...
Resource Type:: Masters Thesis
Full Text:: (Gifford Pinchot Vegetation Database, Rev. 1.1) identifying stands regenerating from commercial

Height-related trends in structure and function of Douglas-fir foliage

Creator:: Woodruff, David R.
Abstract:: This dissertation investigated the impacts of tree height upon a range of physiological and structural characteristics of Douglas-fir foliage; relationships between structural and functional trends with height; and compensatory mechanisms that mitigate height-related growth constraints. Height-related trends in foliar physiological and anatomical characteristics were examined both within trees as well...
Resource Type:: Dissertation
Full Text:: the T.T. Munger Research Natural Area in the Gifford Pinchot National Forest (Shaw et al. 2004). The

ScholarsArchive@OSU

Exploration of statistical methods for synthesizing the effects of variable-retention harvesting on multiple taxa

Stocking and growth of noble fir in the Cascade Mountains of Oregon and Washington

Post-eruption species selection and planting trials for reforestation of sites near Mount St. Helens

Green-tree retention and ectomycorrhiza legacies : the spatial influences of retention trees on mycorrhiza community structure and diversity

The influence of canopy structure and epiphytes on the hydrology of Douglas-fir forests

Habitat relationships of small terrestrial vertebrates and invertebrates in managed forests in the southern Oregon Cascades

Effects of spatially dispersed green-tree retention on ectomycorrhiza diversity

Response of small mammal mycophagy to varying levels and patterns of green-tree retention in mature forests of western Oregon and Washington

Carbon storage in a Pacific Northwest conifer forest ecosystem : a chronosequence approach

Height-related trends in structure and function of Douglas-fir foliage

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