Index Catalog // ScholarsArchive@OSU

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:: dissertation is the first to evaluate the effects of the gravitational component of water potential on the

Summary report to assist development of ecosystem flow recommendations for the Coast Fork and Middle Fork of the Willamette River, Oregon

Creator:: Gregory, Stanley V., Ashkenas, Linda, and Nygaard, Chris
Abstract:: Introduction The Willamette River Flow Project The Nature Conservancy (TNC) and the U. S. Army Corps of Engineers (USACE) are collaborating on a project to determine environmental flow requirements for the Willamette River and its tributaries and to design and test alternative flow releases from the dams that can meet...
Resource Type:: Technical Report
Full Text:: Nygaard2 Product of the Institute for Water and Watersheds Oregon State University Michael

Evaluation of evapotranspiration and irrigation performance in Oregon south coast

Creator:: Sriprisan, Sirikul (Indi)
Abstract:: This study was prompted by the need for improving the efficiency of irrigation systems at the Oregon South coastal areas. Accurate information about evapotranspiration (ET) rates is essential for maximizing the efficiency of irrigation systems. Currently, ET estimates provided by Bureau of Reclamation AgriMet Program are derived from the Kimberly...
Resource Type:: Masters Thesis
Full Text:: ........................................................................... 70 4.3.2.1 Gross water requirement and losses ............................................. 70

Impact of exotic Ponderosa pine (Pinus ponderosa Doug. ex Laws.) plantations on water resources in northwestern Patagonia, Argentina

Creator:: Licata, Julian A.
Abstract:: Exotic ponderosa pine (Pinus ponderosa Doug. ex Lawson) plantations are being planted within the natural distribution area of cordilleran cypress (Austrocedrus chilensis (D.Don) Pic. Ser. et Bizzarri) in Patagonia, Argentina. The productivity of these exotic plantations is much greater than that of native forests, suggesting greater water use. Before these...
Resource Type:: Dissertation
Full Text:: Lawson) Plantations on Water Resources in Northwestern Patagonia, Argentina. Abstract approved

Agronomic guidelines for flexible cropping systems in dryland areas of Oregon

Creator:: Lutcher, L. K. (Lawrence K.), Wysocki, Donald John, 1952-, Corp, Mary K., Horneck, Donald Arthur, and Oregon State University. Extension Service
Abstract:: Flexible cropping systems allow for an opportunistic change in an established rotation. Plant-available soil water is the most reliable indicator of potential yield.
Resource Type:: Technical Report
Full Text:: (6) plant-available soil water before planting. Plant-available soil water is the most reliable

Comparison of the water relations characteristics of woody plants in western Oregon

Creator:: Davis, Kent J.
Abstract:: I studied the water relations traits, twig conductivity, C'3 isotopic composition, and wood density of three conifer and five angiosperm species in western Oregon. This study took place from spring 2002 to fall 2003 on four sites. Species were selected to represent the diversity of drought tolerance of woody plants...
Resource Type:: Masters Thesis
Full Text:: Relations Properties and Seasonal Variation 67 Suites of Water Relations Properties and Plant Adaptation

The effects of water and shade treatments on photosynthesis and root-rhizosphere respiration in young ponderosa pine

Creator:: Johnson, Theresa J.
Abstract:: Water treatments were applied to young ponderosa pine trees in the Eastern Cascades, Oregon during the 2003 growing season, and shade treatments were applied during the 2003 and 2004 growing seasons to understand how photosynthesis and soil respiration, particularly the root/rhizosphere fraction (R[subscript rrh]), would respond to increased moisture availability...
Resource Type:: Masters Thesis

Hydrological consequences of two native shrubs in semi-arid Senegal : patterns, processes, concepts and methods

Creator:: Kizito, Fred
Abstract:: Water availability is a critical limiting element in semi-arid ecosystem productivity and presents particular challenges in Sahelian countries such as Senegal. The landscapes are characterized by the presence of two common semi-arid shrubs (Piliostigma reticulatum and Guiera senegalensis), both of which may be important hydraulic regulators in these water-limited ecosystems....
Resource Type:: Dissertation
Full Text:: requires knowledge of root 5 distribution and plant consumptive water use patterns (Ong et al., 1991

Water movement in the stem xylem in relation to xylem specific conductivity in four hardwood species

Creator:: Fallas-Cedeño, Lottie
Abstract:: In deciduous species, water exits stems mainly through leaf traces attached to the outer growth ring and yet we know that water ascends throughout the entire cross-section of the sapwood. There is an increasing amount of information on sap flow and sapwood hydraulic properties from separate studies, but little information...
Resource Type:: Masters Thesis

Mineral assessment of open range livestock production on the Warm Springs Indian Reservation

Creator:: Brummer, Fara Ann
Abstract:: The Warm Springs Reservation is located in central Oregon. Livestock production consists of beef (commercial with an Angus, Horned Hereford base) and roping (Corriente and Longhorn) cattle and horses that forage most of the year on the open range within reservation boundaries. Forage consists of annual and perennial grasses and...
Resource Type:: Masters Thesis
Full Text:: (LxU). Plant samples were also collected in October 2008 and May 2009 to determine mineral content

ScholarsArchive@OSU

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

Summary report to assist development of ecosystem flow recommendations for the Coast Fork and Middle Fork of the Willamette River, Oregon

Evaluation of evapotranspiration and irrigation performance in Oregon south coast

Impact of exotic Ponderosa pine (Pinus ponderosa Doug. ex Laws.) plantations on water resources in northwestern Patagonia, Argentina

Agronomic guidelines for flexible cropping systems in dryland areas of Oregon

Comparison of the water relations characteristics of woody plants in western Oregon

The effects of water and shade treatments on photosynthesis and root-rhizosphere respiration in young ponderosa pine

Hydrological consequences of two native shrubs in semi-arid Senegal : patterns, processes, concepts and methods

Water movement in the stem xylem in relation to xylem specific conductivity in four hardwood species

Mineral assessment of open range livestock production on the Warm Springs Indian Reservation

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