Index Catalog // ScholarsArchive@OSU

Design and Testing of a Device to Separate Tightly-Bound and Mobile Water Pools in Soil

Creator:: Madrigal, Justin Luis
Abstract:: Water movement, from forest soil to streams, has traditionally been modeled by translatory flow. A hypothesis was presented by Brooks et al. (2010) suggesting that, in addition to translatory flow, there exists an immobile pool of water trapped in small pores with low matric potential. Comparisons of water stable isotope...
Resource Type:: Honors College Thesis
Full Text:: hypothesis was presented by Brooks et al. (2010) suggesting that, in addition to translatory flow, there

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

Land Use Impacts on Water Quality in Oak Creek Watershed

Creator:: Johnson, Keira R.
Abstract:: Understanding the relationships between land use, water quality, and groundwater is crucial for ecological, economic, and water management decisions. This study aims to provide a comprehensive analysis of the land use activities and hydrologic processes influencing the water quality of Oak Creek watershed. Objectives of this study were: 1) to...
Resource Type:: Honors College Thesis
Full Text:: _____________________________________________________________________ J Renée Brooks, Committee Member, representing Pacific Ecological Systems Division, EPA

Trickle-down ecohydrology : complexity of rainfall interception and net precipitation under forest canopies

Creator:: Allen, Scott T.
Abstract:: Rainfall interception is a primary control over the moisture input to a forested ecosystem through the partitioning of precipitation into throughfall, stemflow, and an evaporated component (i.e. the interception loss). Rainfall interception is a spatially and temporally varying process at multiple scales, but heterogeneity in interception processes are poorly understood...
Resource Type:: Masters Thesis
Full Text:: . Brooks, J. R. Bond, B. J. McDonnell, J. J. Journal: Hydrological Processes

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

Context matters : A multi-scale assessment of riparian tree response to upslope density reduction

Creator:: Ruzicka, Kenneth J., 1982-
Abstract:: Forest management is rapidly undergoing a transformation from a discipline based on efficient commodity production to one for multiple uses, especially on federally managed land in the United States. This new management paradigm has challenged silviculturists to develop and adapt forest management techniques that can deal with increased demands. Using...
Resource Type:: Dissertation
Full Text:: . J. Renée Brooks assisted with study design, data analysis and the writing of Chapter 4. Paul D

A Trend Analysis of Nitrate in the Southern Willamette Valley Groundwater Management Area (GWMA)

Creator:: Piscitelli, Cody M.
Abstract:: The shallow aquifer in Southern Willamette Valley (SWV) has high levels of nitrate, and we are exploring the time trends in nitrate, and the hydrologic and land management factors that contribute to this problem. Nitrogen (N) inputs to farmland from fertilizer is thought to be the primary source of nitrogen...
Resource Type:: Masters Thesis
Full Text:: would also like to thank my committee members for their ongoing support. Jana Compton and Renée Brooks

Environmental effects on heartwood extractive content and their consequences for natural durability in Douglas-fir and western redcedar

Creator:: Taylor, Adam McVaugh, 1969-
Abstract:: Heartwood can have properties that are distinct from sapwood, including resistance to insect and microbial attack. Despite the practical importance of heartwood formation in trees, a review of the literature revealed that little was known about the effects of environmental factors on heartwood quality or how variations in heartwood properties...
Resource Type:: Dissertation
Full Text:: members, Renée Brooks, Joe Karchesy and Claire Montgomery, for the guidance and support. This research

Crown structure, stand dynamics, and production ecology of two species mixtures in the central Oregon Cascades

Creator:: Garber, Sean M.
Abstract:: Knowledge of stand structure, stand dynamics, and production ecology of species mixtures lags well behind that of single-species, even-aged stands. Two mixed-species spacing trials in central Oregon allowed investigation of mixed-species dynamics in a controlled experimental setting. The first site, Pringle Butte, is a mixture of ponderosa pine (Pinus ponderosa...
Resource Type:: Masters Thesis
Full Text:: , Drs. J. Renee Brooks, Klaus Puettmann, and Eric Hansen for their support, helpful comments, and

Biophysical analyses of peroxiredoxins and a partner reductase

Creator:: Hall, Andrea Renée
Abstract:: Peroxiredoxins (Prxs) are dominant peroxide-reducing enzymes with two important roles: they protect all organisms from oxidative damage induced by peroxides, and in eukaryotes, they participate in hydrogen peroxide signaling pathways. This dissertation presents studies aimed at the biophysical characterization of select Prxs and a Prx reductase to elucidate their structure-function...
Resource Type:: Dissertation
Full Text:: DISSERTATION OF Andrea Renée Hall for the degree of Doctor of Philosophy in Biochemistry & Biophysics

ScholarsArchive@OSU

Design and Testing of a Device to Separate Tightly-Bound and Mobile Water Pools in Soil

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

Land Use Impacts on Water Quality in Oak Creek Watershed

Trickle-down ecohydrology : complexity of rainfall interception and net precipitation under forest canopies

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

Context matters : A multi-scale assessment of riparian tree response to upslope density reduction

A Trend Analysis of Nitrate in the Southern Willamette Valley Groundwater Management Area (GWMA)

Environmental effects on heartwood extractive content and their consequences for natural durability in Douglas-fir and western redcedar

Crown structure, stand dynamics, and production ecology of two species mixtures in the central Oregon Cascades

Biophysical analyses of peroxiredoxins and a partner reductase

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