Index Catalog // ScholarsArchive@OSU

Water residence time and runoff generation in the western Cascades of Oregon

Creator:: McGuire, Kevin J.
Abstract:: The age, or residence time of water is a fundamental descriptor of catchment hydrology, revealing information about the storage, flow pathways and source of water in a single integrated measure. While there has been tremendous recent interest in residence time to characterize catchments, there are few studies that quantify residence...
Resource Type:: Dissertation

Measurement and modeling the physical controls of snowmelt in the Pacific Northwest

Creator:: Mazurkiewicz, Adam B.
Abstract:: The physical controls of snowmelt in the Pacific Northwest (PNW) are poorly understood. While there have been numerous field and modeling investigations at the plot and watershed scale, few studies have identified how the snow energy balance (EB) components vary in importance both spatially and temporally. The identification of how...
Resource Type:: Masters Thesis
Full Text:: H.J. Andrews Experimental Forest (HJA) in the western Cascade Mountains of Oregon found that

Butterflies of the H.J. Andrews Experimental Forest : biological inventory and ecological analysis

Creator:: Ross, Dana N. R.
Abstract:: A biological inventory of the butterflies of the H. J. Andrews Experimental Forest [HJA] in Linn/Lane County, Oregon was conducted during 1994 and 1995. It was the first comprehensive survey of HJA butterflies for the site and serves as a baseline for future butterfly research. A detailed ecological account is...
Resource Type:: Masters Thesis
Full Text:: of the butterflies of the H. J. Andrews Experimental Forest [HJA] in LinnlLane County, Oregon was

Community profiles of ammonia oxidizers across high-elevation forest-to-meadow transects

Creator:: Mintie, Ann
Abstract:: In recent years considerable interest has been shown in the diversity of ammonia-oxidizing bacteria in soil communities. The majority of the research has been carried out in Northern Europe where soils have received high atmospheric inputs of nitrogen over the past two centuries. In contrast, although much work has been...
Resource Type:: Masters Thesis
Full Text:: . Two experimental sites (Lookout and Carpenter) were chosen in the H. J. Andrews Experimental Forest

Patterns of chronic wind mortality in a small, old-growth Pseudotsuga menziesii forest in the western Cascades, Oregon

Creator:: Littlefield, Sam, 1980-
Abstract:: Windthrow has been studied extensively as a cause of mortality and as a landscape disturbance agent in temperate forests throughout the United States. The effects of windthrow mortality on stand species composition and structure, forest regeneration and seral development have been well described at the site (e.g. single gap) and...
Resource Type:: Masters Thesis

Inter-relationships of vegetation, hydrology and micro-climate in a young, Douglas-fir forest

Creator:: Barnard, Holly Rene
Abstract:: The links between forests, streamflow, and climate are poorly understood. Despite hundreds of studies over the past 60 years, fundamental questions of forests' effects on the hydrologic cycle remain unanswered. The hydrological cycle involves mutually-dependent biological and physical processes that operate at multiple scales of time and space, and this...
Resource Type:: Dissertation
Full Text:: term stream discharge data from the H.J. Andrews Experimental Forest (HJA), the site of the field

Litter controls of microbial community composition and function in forest soils

Creator:: Brant, Justin B.
Abstract:: Most carbon (C) transformations in soil are carried out by a diverse and complex soil microbial community. The size and composition of the soil microbial community is determined by poorly understood interactions between the quantity and chemical composition of plant inputs, as well as climate. Given the metabolic diversity of...
Resource Type:: Masters Thesis
Full Text:: heterophylla) forest in the Oregon Cascades that has received seven years of either wood addition or root and

Quantification of advection and dispersion in lateral subsurface flowpaths at the hillslope-scale

Creator:: Victory, Nichole I.
Abstract:: It is becoming increasingly important to understand fundamental hillslope-scale hydrological processes. Most hillslope-sale transport experiments have generally focused on conceptual findings or other aspect of flow behavior, rather than the quantification of the mass transport mechanisms of advection and dispersion. When the velocities have been quantified, dispersion has been mentioned...
Resource Type:: Masters Thesis
Full Text:: hillslope in the HJ Andrews (HJA) Experimental Forest, Western Oregon, USA. The specific objectives of

Exotic plant species dynamics from 1994 to 2005 on road networks in forested landscapes of western Oregon

Creator:: Sheehy, Samantha
Abstract:: Although the Pacific Northwest has the least proportion of non-native plant species in relation to other regions of North America, exotic species continue to spread into mountainous areas, including the Cascade Range. In a forested landscape, road networks can act as corridors for exotic plant dispersal and establishment, helping species...
Resource Type:: Masters Thesis
Full Text:: the H.J. Andrews Experimental Forest, located in the Cascade Range, Oregon. The H.J. Andrews is an

Quantifying C and N contents and isotope signatures of SOM pools in the H. J. Andrews DIRT plots

Creator:: Keirstead, Heath
Abstract:: The mechanisms governing short- and long-term belowground carbon dynamics need to be understood. As part of a larger project developed to assess the effect of quantity and quality of litter inputs on the rate of soil organic matter (SOM) formation, I examined SOM in the H. J. Andrews Detritus Input...
Resource Type:: Masters Thesis
Full Text:: with depth in this coniferous forest relative to the published trends in other forest types; and, (4

ScholarsArchive@OSU

Water residence time and runoff generation in the western Cascades of Oregon

Measurement and modeling the physical controls of snowmelt in the Pacific Northwest

Butterflies of the H.J. Andrews Experimental Forest : biological inventory and ecological analysis

Community profiles of ammonia oxidizers across high-elevation forest-to-meadow transects

Patterns of chronic wind mortality in a small, old-growth Pseudotsuga menziesii forest in the western Cascades, Oregon

Inter-relationships of vegetation, hydrology and micro-climate in a young, Douglas-fir forest

Litter controls of microbial community composition and function in forest soils

Quantification of advection and dispersion in lateral subsurface flowpaths at the hillslope-scale

Exotic plant species dynamics from 1994 to 2005 on road networks in forested landscapes of western Oregon

Quantifying C and N contents and isotope signatures of SOM pools in the H. J. Andrews DIRT plots

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