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  • Daily activity patterns, survival, and movements of red tree voles (Arborimus longicaudus) in western Oregon

    Creator:
    Swingle, James Kerr
    Abstract:
    We radiocollared a sample of 61 red tree voles in Douglas County, Oregon and monitored their movements to determine daily, seasonal, and sexual differences in behavior and home range attributes. We also collected information on nest attributes, survival, and dispersal of the radiocollared voles. Individual voles were monitored for periods...
    Resource Type:
    Masters Thesis
    Full Text:
    Department of Fisheries and Wildlife at Oregon State University. Drs. Dan Schafer and Robert Anthony served

  • Untangling the complexity of nearshore ecosystems : examining issues of scaling and variability in benthic communities

    Creator:
    Schoch, G. Carl
    Abstract:
    The objective of this research was to improve our understanding of how changes in the environment affect ecological processes. Change detection is often confounded by the large variation found in ecological data due to the difficulty of finding replicates in nature. Intertidal communities were chosen for studies of biophysical interactions...
    Resource Type:
    Dissertation
    Full Text:
    Duggins at Friday Harbor Laboratory, Duncan Fitzgerald at Boston University, Dan Mann at the University

  • Foraging ecology of caspian terns and double-crested cormorants in the Columbia River Estuary

    Creator:
    Lyons, Donald E.
    Abstract:
    A detailed understanding of the foraging ecology of species preying upon threatened or endangered prey may contribute to identifying and evaluating management options to reduce predation, when such management is deemed appropriate. In the Columbia River estuary, Caspian terns (Sterna caspia) and double-crested cormorants (Phalacrocorax auritus) have been identified as...
    Resource Type:
    Masters Thesis
    Full Text:
    (Fred Dobler, Chris Thompson). I sincerely thank my major advisor, Dr. Dan Roby, for providing

  • Evaluation of cold in-place recycling of asphalt conrete pavements in Oregon

    Creator:
    Scholz, Todd
    Abstract:
    Significant use of cold in-place recycling (CIR) has occurred in Oregon since 1984 as an alternative to other rehabilitation techniques or to the reconstruction of distressed asphalt concrete (AC) pavements. Due to the initial success of the projects cold recycled during 1984-85, the Oregon Department of Transportation (ODOT) and Oregon...
    Resource Type:
    Masters Thesis
    Full Text:
    program. I would like to thank Dr. Dan Schafer, my minor professor, and committee members, Dr. Robert D

  • Whale Cove (35LNC60) : an archaeological investigation on the central Oregon coast

    Creator:
    Rogers, Ann Bennett
    Abstract:
    The Whale Cove Site, 35LNC60, is a shell midden, showing occupations from 3010 B.P. to 330 B.P., spanning the Early and Late Littoral Periods. Analysis of mammalian faunal remains, bone and antler tools, lithics and discriptions of recovered shellfish artifacts allows for chronological refinement of the previously mentioned archeologically defined...
    Resource Type:
    Masters Thesis
    Full Text:
    thanks to my committee members: Richard Ross, John Young, Dan Schafer, and Bruce Shephard. In addition

  • Developing models to predict favorable environments for rice blast

    Creator:
    Calvero, Silvino B.
    Abstract:
    Statistical analyses were used to develop predictive models of rice blast and to relate the favorability of environment to disease incidence and severity on different rice cultivars at five sites in Asia. The WINDOW PANE program was used to search for weather factors highly correlated with blast. Stepwise and r-square...
    Resource Type:
    Masters Thesis
    Full Text:
    and career. The help extended by the committee members, Drs. Bruce McCune, Dan Schafer, and Steve

  • Biodiversity : illustrations of some concepts, causes, and consequences

    Creator:
    Russell, Roland B.
    Abstract:
    Careful analysis and thoughtful synthesis will be necessary for expanding the envelope of ecological understanding. This work is my attempt at communicating both of these, in relation to three questions about our understanding of the structure and dynamics of biological diversity. These questions focus on a) advancing our understanding of...
    Resource Type:
    Dissertation
    Full Text:
    Lubchenco, Peter McEvoy, Bruce Menge, Phil Rossignol, and Dan Schafer; you make a pretty amazing team. Dave

  • Nondestructive evaluation of in vitro-stored plants : a comparison of visual and image analysis systems

    Creator:
    Aynalem, Hailu M.
    Abstract:
    In-vitro plants in slow-growth storage must be routinely evaluated for repropagation and assessment of viability. It is often difficult to determine plant health by visual assessment due to variation in growth patterns and plant structure among genera. In order to evaluate cold-stored germplasm, laboratories need more effective approaches for viability...
    Resource Type:
    Masters Thesis
    Full Text:
    , and the rest of the committee members Prof. Burt Lawrence, Prof. Dan Schafer and Prof. Jim Myers for

  • Mechanics of Nb-Ti superconducting composites

    Creator:
    Guo, Zhiqiang
    Abstract:
    Mechanical behavior of Nb-Ti superconducting composites with copper matrices have been studied experimentally and theoretically. Experimental work includes extensive measurements of Cu/Nb-Ti composite system. Techniques for fine fiber testing and composite wire measurement have been developed. Experimental parameters examined in this research include geometry, hardness, Young's modulus, Poisson's ratio, yield...
    Resource Type:
    Dissertation
    Full Text:
    Peterson, Timothy C. Kennedy, E. G. Wolff, and Dan Schafer for their kind advices and encouragements as

  • Succession and stability in two rocky intertidal communities on the central Oregon coast

    Creator:
    Farrell, Terence M.
    Abstract:
    The stability of a limpet-dominated community was assessed in a experiment in which an consumer was temporarily removed. Compared to unmanipulated plots, the limpet-exclusion plots developed greater algal abundance and altered species composition of both algae and barnacles. The community was not perturbed beyond its capacity to recover, since the...
    Resource Type:
    Dissertation
    Full Text:
    suburban New Jersey). I thank Dan Hoffman for helping me when I badly needed some good advice and for