Search Constraints

Start Over
Filtering by: Creator Jacobs, Dakota C. Remove constraint Creator: Jacobs, Dakota C. Committee Member Pereira, Cliff Remove constraint Committee Member: Pereira, Cliff Degree Field Wildlife Science Remove constraint Degree Field: Wildlife Science Degree Level Doctoral Remove constraint Degree Level: Doctoral

Search Results

  • Ecology of mallard ducklings on Lower Klamath National Wildlife Refuge, California

    Creator:
    Mauser, David M.
    Abstract:
    The ecology of female mallards (Anas platyrhynchos) and their broods was studied during 1988-90 on Lower Klamath National Wildlife Refuge, California. Survival of 127 radio-marked ducklings from 64 broods was 0.18 to 10 days of life, and 0.37 and 0.34 to fledging for 1988, 1989, and 1990, respectively. For the...
    Resource Type:
    Dissertation
    Full Text:
    , 1988-90. C = confirmed agent of mortality, P = probable agent, and U = unknown agent. . . . 18 CHAPTER

  • Local weather, regional climate, and population dynamics of northern spotted owls in Washington and Oregon

    Creator:
    Glenn, Elizabeth M.
    Abstract:
    Since the early 1990s, declines in northern spotted owl (Strix occidentalis caurina) populations have been documented through extensive field surveys and range-wide demographic analyses. Although loss of late-successional forest has been credited as the primary cause for spotted owl population declines, environmental variation has also been shown to influence vital...
    Resource Type:
    Dissertation
    Full Text:
    conditions, total snowfall, and number of days ≥ 32˚C on 6 northern spotted owl study areas in Oregon and