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An assessment of plant community structure, herbivory, soils, and state-and-transition theory on a winterfat (Krascheninnikovia lanata [Pursh] A.D.J. Meeuse & Smit) ecological site

Creator:: Matney, Casey A.
Abstract:: State-and-transition models (STMs) have been successfully used to describe ecological dynamics in woodlands, shrublands, grasslands, and several other ecosystems. Changes in vegetation and soil are measured to gauge and predict plant community dynamics within ecological states and transitions between alternative ecological states. Ecological states and their boundaries are defined by...
Resource Type:: Dissertation
Full Text:: RELATION TO DISTANCE FROM A CATTLE WATERING POINT IN THE CATLOW VALLEY OF OREGON

Certain ecological aspects of cultivated hill pastures in Kings Valley, Oregon

Creator:: Miller, Bonita June
Resource Type:: Masters Thesis
Full Text:: Kings Valley, Oregon CERTAIN ECOLOGICAL ASPECTS OF CULTIVATED HILL PASTURES IN KINGS VALLEY, OREGON

Understory herb and shrub responses to root trenching, pre-commercial thinning, and canopy closure in Douglas-fir forest of the western Cascades, Oregon

Creator:: Lindh, Briana C.
Abstract:: This thesis examines factors limiting understory herb presence and flowering in young second-growth Douglas-fir (Pseudotsuga menziesii) forests on the west side of the Cascade Mountains, Oregon, USA. I studied the belowground effects of canopy trees on understory herbs and shrubs in old-growth forests using trenched plots from which tree roots...
Resource Type:: Dissertation
Full Text:: degree of Doctor of Philosophy in Botany and Plant Pathology presented on May 23, 2003. Title: Understory

Similarities in understory vegetation composition between unthinned, thinned and old-growth Douglas fir stands in western Oregon

Creator:: Mayrsohn, Cheryl
Abstract:: Forest stands were studied to determine if old-growth forest structure could be mimicked in younger stands via overstory manipulation. Cover and species composition of understory plants were systematically sampled in sixteen thinned second-growth stands and sixteen adjacent unthinned second-growth Douglas fir (Pseudotsuga menziesii (Mirabel) Franco.) stands. The stands were thinned...
Resource Type:: Masters Thesis
Full Text:: Location of the study sites in the Coast Range and Cascade Mountains of Oregon 9 2 Layout of plot 14 3

Drivers of variability in transpiration and implications for stream flow in forests of western Oregon

Creator:: Moore, Georgianne W.
Abstract:: I compared transpiration among different types of forest stands in the western Cascades of Oregon. The three major questions were: 1) How does transpiration compare between a young and old stand and why? 2) Does diversity of overstory trees affect transpiration? and 3) How is transpiration related to stream flow?...
Resource Type:: Dissertation

Early-successional vegetation dynamics and microsite preferences following post-fire forest restoration in southwestern Oregon

Creator:: Kayes, Lori J.
Abstract:: Reforestation-based restoration of severely burnt plantations is one of the primary management activities following wildfire on U.S. federal lands. Restoration effects on early-seral plant and cryptogam communities have not been documented. The objectives of this study were, in severely burnt plantations two to four years post-fire, to examine the: (1)...
Resource Type:: Dissertation
Full Text:: Southwestern Oregon CHAPTER 1 - I$TRODUCTIO$ Disturbances, which range in periodicity and severity, cause

Factors determining species composition of post-disturbance vegetation following logging and burning of an old growth Douglas-fir forest

Creator:: Clark, Deborah Louise, 1950-
Resource Type:: Masters Thesis
Full Text:: THESIS OF Deborah Clark for the degree of Master of Science in Botany and Plant Pathology presented on

Germination and establishment in Willamette Valley native prairie plants

Creator:: Russell, Michael C.
Abstract:: Native plants provide many ecosystem services while also having great beauty and are a valuable component of the landscape. As use of these plants in habitat restoration, agricultural insectary plantings, and home landscapes increases so does demand for information on the basic biology of a group of species that have...
Resource Type:: Masters Thesis
Full Text:: Valley Native Prairie Plants by Michael C. Russell A THESIS submitted to Oregon

The use of ơ15N and ơ¹³C to analyze food webs and identify source-sink relationships in riparian canopy vegetation of the Oregon Coast Range

Creator:: Scott, Emily E.
Abstract:: In the Coast Range of western Oregon, some natural resource managers are converting red alder-dominated riparian areas to conifers to increase the future source of in-stream large wood for salmonid habitat. However, studies in Alaska have shown red alder-dominated riparian areas support greater invertebrate biomass compared to conifer-dominated areas. In...
Resource Type:: Masters Thesis

Synecology of the white-oak (Quercus garryana Douglas) woodlands of the Willamette Valley, Oregon

Creator:: Thilenius, John F., 1931-
Abstract:: Quercus garryana dominated plant communities are found in the interior coastal valleys and on foothills from southeastern Vancouver Island, British Columbia, south to San Francisco, California. They occur as savannas, intermixed with a variety of conifers, and in almost pure stands. The diversity of habitats occupied by the species and...
Resource Type:: Dissertation
Full Text:: ) woodlands of the Willamette valley, Oregon AN ABSTRACT OF THE THESIS OF JOHN FREDRICK THILENIUS for the

ScholarsArchive@OSU

An assessment of plant community structure, herbivory, soils, and state-and-transition theory on a winterfat (Krascheninnikovia lanata [Pursh] A.D.J. Meeuse & Smit) ecological site

Certain ecological aspects of cultivated hill pastures in Kings Valley, Oregon

Understory herb and shrub responses to root trenching, pre-commercial thinning, and canopy closure in Douglas-fir forest of the western Cascades, Oregon

Similarities in understory vegetation composition between unthinned, thinned and old-growth Douglas fir stands in western Oregon

Drivers of variability in transpiration and implications for stream flow in forests of western Oregon

Early-successional vegetation dynamics and microsite preferences following post-fire forest restoration in southwestern Oregon

Factors determining species composition of post-disturbance vegetation following logging and burning of an old growth Douglas-fir forest

Germination and establishment in Willamette Valley native prairie plants

The use of ơ15N and ơ¹³C to analyze food webs and identify source-sink relationships in riparian canopy vegetation of the Oregon Coast Range

Synecology of the white-oak (Quercus garryana Douglas) woodlands of the Willamette Valley, Oregon

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