Index Catalog // ScholarsArchive@OSU

Ecohydrological mediation of water budget partitioning and time scales of subsurface flow in a seasonally semi-arid grassland

Creator:: Pangle, Luke A.
Abstract:: Understanding how the interactions and feedbacks between plant function, climate, and soils ultimately affects the terrestrial water balance and subsurface flow processes is major challenge in scientific hydrology. This dissertation summarizes the findings of a manipulative climate warming experiment, an observational field study that utilized stable-isotope tracers, and associated modeling...
Resource Type:: Dissertation
Full Text:: : ________________________________________________________________________ Jeffrey J. McDonnell Understanding how the interactions and feedbacks between plant

Physiological impacts of groundwater and surface water application on desert graminoids of different geographic origin

Creator:: Abdallah, Mohamed (Mohamed Ahmed B.)
Abstract:: Desert plant communities are among the most sensitive to changes in soil water conditions. In areas with shallow aquifers, it is important to understand both the effects of groundwater alterations on vegetation and how changes in surface-soil water affect plant water uptake. Studies in arid environments have evaluated the effect...
Resource Type:: Masters Thesis
Full Text:: : Ricardo Mata-Gonzalez Desert plant communities are among the most sensitive to changes in soil water

Stem sapwood water transport and storage strategies in three conifers from contrasting climates

Creator:: Barnard, David M.
Abstract:: The state of Oregon has two distinct climate types bisected by the crest of the Cascade Mountain range. The western side of the Cascades experiences high levels of precipitation and mild temperatures due to the maritime influence of the Pacific Ocean, while the eastern side lies in the rain shadow...
Resource Type:: Masters Thesis
Full Text:: ....................................................................................................... 14 Sites, Plant material and sample preparation ....................................... 14

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

Soil water availability and chemical transport in a pear (Pyrus communis) orchard swelling clay soil under micro and flood irigation

Creator:: Chen, Chengci, 1964-
Resource Type:: Dissertation
Full Text:: ) the volume decreased by 18%. Microsprinlders and pulsators supplied similar amounts of plant

Hydraulic properties of compression wood in branches and reoriented shoots of Douglas-fir (Psuedotsuga menziesii)

Creator:: Spicer, Rachel
Abstract:: Xylem anatomy is a strong determinant of water transport efficiency and is therefore an important component of the overall hydraulic strategy of any woody plant. However, in addition to its role in water transport, xylem also serves in mechanical support, and these two functions may represent conflicting design requirements. To...
Resource Type:: Masters Thesis

Meta-sedimentary bedrock as an alternative source of water for forest ecosystems in a Mediterranean climate

Creator:: Zwieniecki, Maciej A.
Abstract:: Evaluation of meta-sedimentary bedrock as a source of stored water available to plants in a mediterranean climate is presented based on: root length distribution (RLD), root morphology, rock water holding capacity and seasonal pattern of water depletion. Studies were performed in southwestern Oregon under young stands of whiteleaf manzanita, ponderosa...
Resource Type:: Dissertation

The influence of antidesiccants on field performance and physiology of 2+0 ponderosa pine (Pinus ponderosa Dougl.) seedlings

Creator:: Vera-Castillo, J. A. Gil
Abstract:: This thesis research examines the effects of film-forming antidesiccants applied to dormant pondexosa pine (Pinus ponderosa Dougl.) seedlings after being lifted and to actively growing seedlings. The basic proposition was that antidesiccants would have a positive effect on reducing water loss in ponderosa pine seedlings. In order to evaluate the...
Resource Type:: Dissertation

Effects of irrigation and nitrogen on cauliflower development, yield and quality

Creator:: Bratsch, Anthony D.
Abstract:: Field experiments were conducted with cauliflower (Brassica oleracea var. botrytis cv. Snowball Y ) to determine crop development, yield, quality and maturity response to various seasonal water levels, and to specific water stress timing in relation to curd initiation. The effects of nitrogen rate, timing, and source and the application...
Resource Type:: Dissertation
Full Text:: Effects on Growth 22 Nitrogen as a Factor in Maturity 25 Nitrogen Concentration in Plant Tissue 27

Physiology of flowering in Coffea arabica L. : role of growth regulators and water relations

Creator:: Schuch, Ursula K.
Abstract:: Coffee trees growing in the Kona district of Hawaii were treated with different concentrations of either BA, GA3, or Promalin, and pruned at the time of flowering. No significant differences in the flowering and fruit ripening pattern were found. High concentrations (100 mg/1) of growth regulators decreased fruit fresh weight....
Resource Type:: Dissertation
Full Text:: development 10 1. Temperature 10 2. Water relations 11 3. Plant growth regulators 13 III. VASCULAR

ScholarsArchive@OSU

Ecohydrological mediation of water budget partitioning and time scales of subsurface flow in a seasonally semi-arid grassland

Physiological impacts of groundwater and surface water application on desert graminoids of different geographic origin

Stem sapwood water transport and storage strategies in three conifers from contrasting climates

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

Soil water availability and chemical transport in a pear (Pyrus communis) orchard swelling clay soil under micro and flood irigation

Hydraulic properties of compression wood in branches and reoriented shoots of Douglas-fir (Psuedotsuga menziesii)

Meta-sedimentary bedrock as an alternative source of water for forest ecosystems in a Mediterranean climate

The influence of antidesiccants on field performance and physiology of 2+0 ponderosa pine (Pinus ponderosa Dougl.) seedlings

Effects of irrigation and nitrogen on cauliflower development, yield and quality

Physiology of flowering in Coffea arabica L. : role of growth regulators and water relations

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