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Filtering by: Creator Donaghay, Percy L. Remove constraint Creator: Donaghay, Percy L. Committee Member Jones, Julia Remove constraint Committee Member: Jones, Julia

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  • Nearshore distribution of barnacle and mussel larvae and oceanographic mechanisms of onshore transport and delivery

    Creator:
    Tyburczy, Joe A.
    Abstract:
    Recruitment of larvae from the plankton is an important determinant of community structure in marine systems. In populations of many marine species, recruitment determines the basic demographic parameters of immigration, emigration, and reproduction. Moreover, the effect of recruitment as an "ecological subsidy" can determine the strength of interactions among species...
    Resource Type:
    Dissertation
    Full Text:
    cyprid (i-p) abundance during day and night cruises on 13 Dec (a, b, i, j), 4 Feb (c, d, k, l), 19 Nov

  • Life History Trade-offs: The Effects of Habitat Selection on Columbian Black-tailed Deer Survival in Oregon

    Creator:
    Clark, Jessica S.
    Abstract:
    The assessment of habitat quality for wild populations requires evaluation of vital rates associated with the use of that habitat. Factors associated with bottom-up (forage) or top-down (predation) regulation and the relative contribution of these processes on ungulate populations are difficult to quantify, especially for a cryptic, but widely distributed...
    Resource Type:
    Masters Thesis
    Full Text:
    Deer. Journal of Mammalogy 82:430–439. Bender, L. C., G. A. Schirato, R. D. Spencer, K. R. McAllister

  • Tidal influence on downstream fining in gravel-bed rivers

    Creator:
    Coles, Derron Rafiq
    Abstract:
    This research examines the downstream fining phenomenon as it operates in coastal gravel-bed rivers of Oregon. Downstream fining is a change in bed composition toward smaller sediment sizes in the downstream direction. Changes in stream flow discharge and channel slope affect the rate of bed-load transport, thereby altering the downstream...
    Resource Type:
    Dissertation
    Full Text:
    particle diameter at distance L, Do is the initial diameter at 0=L and k is a diminution coefficient